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10540900 - Midmark Air Compressor Service Manual

1. AA185201 Step 2 If compressor didn t shut down at 100 Ibs turn nut on adjuster to reset gauge Clockwise will increase reading Counter Clockwise will decrease reading US CL21 CL22 CL32 CL52 Senai Number A 0902L210372 0903L220296 0901L320813 0810L520126 V785000 thru Present thru Present thru Present thru Present thru Present 21 22 P32 P52 Pressure Switch Models 0904P210365 0904P221146 0904P321145 0904P520474 B 6 Numbers thru Present thru Present thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 10 09 J Back To Table Contents Refer To Function and Location Testing Access Procedures Wire Diagrams Cut In Adjustment Exploded Views Step 1 Run compressor until pressure reaches 100 Ibs Note Compressor should shut off close to 100 Ibs Cut Out Adjustment Step 1 Run compressor until pressure reaches 100 Ibs Note Compressor should shut off close to 100 Ibs If not perform a Cut In adjustment o 1 Cut Out Adjuster Cut In Adjuster 0 9a Step 2 If compressor didn t shut down at 100 Ibs turn nut on adjuster to reset gauge Step 2 Compressor should start back up after a 20 Ib drop on the gauge If needed turn nut to adj
2. Models CL 63946900 P 63947000 Item Description Qty 1 Check Valve Location Label 1 ol 2 SerialNumberLabel 1 3 Wainingbabel inne 1 f A 4 2 1 eo 20228900 5 Schematic Labels 1 6 lt 2 1 CL22 20229000 lt gt 7 1 CL32 20229100 55 8 VoltageLabel 1 CL52 20229200 N Classic Series Lubricated Compressors Models Cas Only Items 9 13 P21 20229300 65970600 9 MeuntingNutFag NEA ee t P22 20229400 10 Oil 1 P52 20229600 12 Level Label 1 72 20229700 Always Specify Model amp Serial Number 62985500 D 62985400 Models 121 CL22 CL32 CL52 All SerlaiNum bers 0902L210372 0903L220296 09011 320813 0810L520126 V785000 j thru Present thru Present thru Present thru Present thru Present Models P21 P22 P32 P52 P72 Label Locations Serial Numbe ra 0904P210365 0904 221146 0904P321145 0904P520474 0903P720191 E 26 1 thruPresent thru Present thru Present thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 5 15 Ez
3. SPDT SWITCH Run Winding UNP NOTOR WHT WHT _ D BLK 12 Stat T2 BLK 2 Winding TERM BLOCK WHT um WHT 1 2 OH WHT YEL WHT PRESSURE GRN YEL 2 SWITCH GRN YEL GRN YEL Common Ground CAPACITOR AND RELAY ASSEMBLY 115 VAC SUPPLY 183601 Serial Numbers 0902L210372 thru Present V785000 thru V795263 D 3 Midmark Corporation 2007 SF 1899 Rev 8 09 Table Of Contents iring Diagrams ClassicSeries Lubricated Compressor RED CL21 Single 115 VAC 24V LIGHT Transformer SOLENOID 115V HOUR METER SPDT SWITCH Run Winding PUMP MOTOR WHT WHT 9 Start BLK 2 TERM BLOCK WHT 2 600 30A Lo 2 Qu i WHT BLK YEL PRESSURE GRN YEL SWITCH GRN YEL Common Ground 2 5 CAPACITOR AND RELAY ASSEMBLY 115 VAC SUPPLY 20228900 Rev B Models CL21 Serial Numbers V795264 thru Present Wiring Diagrams Midmark Corporation 2007 SF 1899 Rev 9 09 Wiring Diagrams ClassicSeries Lubricated Compressor Single 230 Volts SOLENOID VALVE Wire Part Harness Fro
4. Wire Part Harness From To Number Power A Source Contactor 62983000 B Contactor Fuse 62979000 Pressure Terminal c Switch Block 62979100 D Pressure Contactor 62983700 Switch E Termal Contactor 62979200 Block Hour F Meter Contactor 62979300 Cable G Contactor SPO 62982300 Switch Contactor SPOT 62982400 Switch SPDT Motor 62982900 Switch Capacitor J Motor and 64884701 Relay Termainal Low K Block Voltage 62983900 Termainal Low E Block Voltage 02383600 Termainal Low M Block Voltage 62983400 Wiring Diagrams Midmark Corporation 2007 SF 1899 Rev 8 09 To Table Of Contents SOLENOID VALVE BLK BLK Common Ground BLU PUMP MOTOR SPDT SWITCH WHT WHT WHT P CONTACTOR E dis 2 Start BLK Winding LH OD WHT BLK YEL BLK GRN YEL BLK F 0 0 HOURS B HOUR METER GRN VEL BLU WHT BLK YEL CAP A 5 CAPACITOR AND RELAY ASSEMBLY 2 PRESSURE YEL 120 VAG SWITCH Transformer BLOCK RED BLK YEL BLU AA183600 E Models CL21 Serial Numbers 0701L210001 thru 0901L210370 Wiring Diagrams ClassicSeries Lubricated Compressor Single 115 Volts RED BLU 24V LIGHT Transformer SIUE SOLENOID 115V HOUR METER
5. 1 L22 62984200 3 Waringbabel nr ree 1 4 Midmark Label 1 E32 62984300 5 Marked in Red Denotes No Longer t52 62986206 Avaliable Schematic Labels 1 Models 6 1 21 20229300 7 FuseReplacementLabel 1 P22 20229400 8 WoltageLabel 5 1 rrt 1 P32 20229500 C 63947100 4 Classic Series Lubricated Compressors P52 20229600 Only have Items ad 20229000 2 10 Check Tag ossesssssssesssssesssssssssssssssssssessseeees 1 62985500 2 62985400 11 RemovePlugTag 1 12 Oil Level 1 CL21 CL22 CL32 CL52 e eS 0701L210001 0701L220001 0701L320001 0701L520001 Always Specify Model amp Seriali Number GEL AAEE thru 0903L220294 thru 0901L320807 thru 0810CL520124 Models 221 22 P32 P52 P72 Serial Numbers 0703 210001 0703P220001 0703P210001 0703P210001 0703P210001 Label Locations ihruogo3P210361 thru0903P221139 thru0903P321137 thruo902P520467 thru0903P720190 E 26 Midmark Corporation 2007 SF 1899Rev 5 20 15 EN To Table Of Contents IMPORTANT REMOVE PLASTIC PLUG C 10475800 m 65969900 CAUTION CHECK OL LEVEL 77009181 10 ua 15V 62970501 8 30V 62970502 C 65975100 7
6. C j PowerAir Oil Less Compressor Dual 208 230 Volts BRN BRN WHT Fans Included with Quiet Cover Option Only Wire Part SPDT SWITCH Harness From To Number RED RED A Power Source Contactor 62978900 F Fe aan B Contactor Fuse 62979000 Pressure Terminal Block 62979100 G Capacitor Switch Sik Contactor Terminal Block 62979200 Meter Contactor 62979300 N SOLENOID BAN WHT Cable BLU l F SPDT Switch SPDT Switch 62982500 Hes PEE ED G SPDT Switch SPDT Switch 62982400 F CONTACTOR H H Motor Single SPDT Switch 62985100 PUMP MOTOR EN SPDT Switch Motor Dual 62984800 m J Contactor Pressure Switch 62983700 i BLK K Terminal Block Low Voltage 62983400 GRN YEL B E GRN YEL ml lwar T HOURS L Terminal Block Low Voltage 62983500 HOUR METER M Terminal Block Low Voltage 62983600 J PRESSURE C Fz N Contactor 62984000 A Transformer ug TERMINAL BLOCK i i RED Quiet Cover Terminal Block amp 62984500 GAN Thermal Switch 230 VAC i YEL RED WAF m M md Jm P io dead Terminal Block 62984600 Common Ground d BLU Q 4 Terminal Block 62983900 D AA184200 Models P22 Serial Numbers 0703P220001 thru 0903P221139 Wiring Diagrams Midmark Corporation 2007 SF 1899 Rev 8 09 D 17 ES ina Di GoTo Tabie ot contents iring Diagrams PowerAir Oil Less Compressor Dual 208 230 Vol
7. Step 5 Check fuse Visually check to see if blown Refer To Section B Fuse Step 6 Bypass the remote switch to verify it is not defective Disconnect the Red White and Blue wires from the remote switch Connect the Blue and Red wires together Cc 4 AA158701i CL22 CL32 CL52 0701L220001 0701L320001 0701L520001 thru 09031220294 thru 0901L320807 thru 0810CL520124 P22 P32 P52 P72 0703P220001 0703P210001 0703P210001 0703P210001 thru 09083P221 139 thru 0903P321 137 thru0902P520467 1 thru0903P720190 Midmark Corporation 2007 SF 1899 8 09 J Back Table Contents EN Note This procedure is only for units with Serial Numbers listed beide sti n g amp Re pal r Low Voltage Control Circuit Step 1 Remove electrical box cover Refer Testing Check for broken or loose wiring Fuse Refer to Section C Electrical Box Cover Wiring Diagrams Relay Exploded Views Step 2 Check high voltage on contactor relay e Set meter to V 2 Place meter probes on indicated wires Step 4 Insert screwdriver into relay to start manu Note Verify reading is 230 volts y 230 VAC Transformer m
8. 65995000 SEA95540 ge 4 BSW20475 77001603 77001604 22 77001605 32 52 77001606 65972500 Accessory for PowerAir Model P72 To Table Of Contents gt 9 62977901 _ Page Section D Wire Diagrams D 1 Item Description Gty 1 Fan Wiring Refer to Sec D Wire Diagrams 2 1 4 Turn Fastener Straight Slot 4 3 Thermal Switch 1 4 Screw Hex Head 10 16 x 3 4 4 5 Fan QUAE uec tociens 2 6 Fan P21 115V iia 2 b P22 P32 P52 P72 230V 2 Always Specify Model amp Serial Number Models Serial Numbers 77001603 0703SC1001 77001604 0703SC2001 77001605 0703SC3001 77001606 0703SC4001 Sound Cover Accessory E 27 Midmark Corporation 2007 SF 1899Rev 9 10 12 EN To Table Of Contents Refer To T 65995000 Section Wire Diagrams 629 0 1 b SEA95540 ge 4 BSW20475 65972500 pe 62977901 d Item Description Qty 2 1 4 Turn Fastener Straight Slot 4 Sound Cover PowerAir Model 3 Thermal Switch 7 77001603 21 4 Screw Hex Head 10 16 x 3 4 5 Fan Guard iicet eniti eere 770
9. 1 br AInEIOSOS E 2 6 Thermal Switch 1 4 65970200 BRV10100 J T ThermmalSwitch nn 1 8 Pre i aam crine etienne 1 10 BCL10907 9 Pop Rivet 150 x 860 irsana 1 C PCB50640 10 ManifoldClamp nee 1 11 Purge Valve ttr tne 12 Elbow 7 16 20 x 1 4 13 Hose Assembly 1 4 NPT 21 L 14 Hose Assembly 3 8 16 L 15 Bushing 1 4 FPT x 1 2 MPT 16 Hose Assembly 1 4 NPT 16 L 17 Street Elbow 1 4 NPT with Sealant 18 Bushing 1 2 MNPT x 1 4 FNPT with Seal 1 77005032 19 Nipple 3 8 NPT x 1 1 2 Brass 1 20 X Anchor Bulkhead 7 4 21 MPT ST 1 2 CA x 3 8 65971300 22 MPTEL 1 2 CA x 3 8 23 S 8 x 1 4 24 TeeRum 1 4 hio eene 50615 18 62900712 X E 25 Street EL 65970505 Thomas Heads 3 8 1 C 197500 Gast Heads 1 4 sss 1 65970702 26 Elbow 1 2 CON x 3 8 2 65970702 27 Hose Assembly 3 8 16 L 1 Always Specify Model amp Serial Number 2 21 22 1 Ps MIE serial Models 210001 0703P220001 E
10. 1 14 Street EL 9 8 1 15 Hose Assembly 1 4 NPT 16 L 1 62900712 16 16 Elbow Street 1 4 NPT with Sealant 1 17 Nipple 3 8 NPT x 1 1 2 Brass 1 18 Anchor Bulkhead 77005032 2 19 MPT ST 1 2 CA x 3 8 20 Pop Rivet 150 x 860 C 65970505 65970702 197600 Always Specify Model amp Serial Number Models arre 5 Pneumatic Tubes Serial thru Present and Hoses E 20 1 Midmark Corporation 2007 SF 1899 Rev 10 29 15 J Back Table Of Contents 50325 n 50655 0 62900905 C 002 1735 00 20 PCB50620 3 65970300 3 C PCB50437 C PCB50605 16 65961601 S Item Description Qty 65970200 5897 5 40156900 1 Pipe 1 4 x 1 4 1 2 Bushing 8 8 1 47 1 50640 3 Switch Bracket 4 ThermalSwitch C PCB50615 14 BEL10907 b Pre CoGler neis 6 Manifold Clamp 8 lt gt 7 gt 8 Elbow 7 16 20 x 1 4 MPT 9 Hose Assembly 1 4 NPT 21 L 1 C 62900712 10 Hose Assembly 3 8 NPT 21 L 1 J h 11 Street Elbow 3 8 Hees
11. SIGNATURE EXP DATE J Back Go To Table Of Contents Table Of Contents Subject to change without notice Refer to www Documark com for the latest revision Midmark Corporation 60 Vista Drive P O Box 286 Versailles OH 45380 0286 937 526 3662 MIDMARIS Fax 937 526 5542 www midmark com Because we care
12. WARNING lel 2 mu lt High Voltage When testing 2 SONTROL SUES components with power on use to prevent electrical shock Refer To Section B Fuse 5 Check fuse Step 3 Check Low Voltage from transformer to low voltage wires Place meter probes on blue and red wire contactor connections Note Verify reading is 24 volts Bs Meter Reading Status Required Action LE AA158702i High Voltage lt Line Voltage Replace Contactor Relay Low Voltage lt 24 Volts Replace Transformer Step 6 Bypass the remote switch to verify it is not defective Disconnect the Red White Blue wires from the remote switch High Voltage Line Voltage Contactor Relay OK Connect the Blue and Red wires together Low Voltage 24 Volts Transformer OK If the relay and fans work then replace remote switch or wiring Models CL21 CL22 CL32 CL52 All senal Nus Pen 0902L210372 0903L220296 0901L320813 0810L520126 V785000 thru Present thru Present thru Present thru Present thru Present Models P21 P22 P32 P52 P72 10568 0904 221146 0904 321145 0904 520474 0903 720191 Low Voltage Cee EEO M thr Present thru Present thru Present thru Present thru Present B 19 Midmark Corporation 2007 SF 1899 Rev 10 09 EZN co To Tabie or contents esting amp Repair Capacitor Referto Testing Wiring Diagrams Exploded views Function and Lo
13. Step 2 Remove electrical cover on compressor head Refer to Section C Compressor Head Electrical Step 1 drain oil from compressor Place a pan under the drain plug then remove drain plug Loosen front mounting nuts Remove rear mounting nuts C Tip compressor forward to drain all oil Thermal Overload Test Step 3 Test continuity Set meter to Q Place meter probes on Thermal Overload Note System is overheated if you have an Open Circuit reading Allow system to cool down and try to restart If system does not start replace compressor heads Crank Shaft Step 2 Access Crank Shaft Verify crank shaft will turn Note If shaft will not turn motor needs replaced AA192400 Electrical Box on top of Compressor All All B 3 1 Midmark Corporation 2007 SF 1899 Models Serial Numbers EZN co To Tabie or contents esting amp Repair Compressor Heads Referto Wiring Diagrams Exploded views Function and Location Atmospheric air is drawn in through intake filters to the compressor head s where air is compressed and exhausted Ms 5 5 to the reservoir tank PRN www midmark com File Name Heat is generated from the compression process SAL Oil Less P21 P22 amp P32 Head E Y AW 22 Replacement 10567900 P22 All P21 P32 All Compressor Head M
14. Switch L 115 a SUPPLY _ 1 4 5 1Connector ex Dj owe RED 184101 Models P21 P21 F 0904P210365 thru Present V785000 thru V795263 Wiring Diagrams Midmark Corporation 2007 SF 1899 Wiring Diagrams o To Table Of Contents iring Diagrams PowerAir Oil Less Compressor P21 Twin 115 VAC RED BLK BLU 24V LIGHT Transformer SOLENOID 115V CAPACITOR Thermal SPDT SWITCH Switch MHL HOUR METER SPDT SWITCH WHT ff BLK 12 CAPACITOR im CONTACTOR 2 fw 172 Lo Qu PREssURE GRN YEL SWITCH TERM BLOCK GRN YEL GRN YEL Common Ground gt a Fans Included with Quiet Cover Option Only 4 Thermal Switch 115 VAC SUPPLY E _ Connector bl _j PE GRNIVEL 20229300 Rev B RED Wiring Diagrams _ Models P21 Serial Numbers V795264 thru Present D 16 Midmark Corporation 2007 SF 1899 Rev 9 09 Em Table Of Contents Wiring Diagrams E
15. 4 d 18 Refer to Electrical Control Box 2 pe pn 19 62903606 19 Bushing RDC 1 2M X 1 4F SEAL 1 C E Always Specify Model amp Serial Number Tank amp Models An E 1 2 Main Components Serial Numbers Midmark Corporation 2007 SF 1899 Rev 7 14 J Back Go To Table Contents 65970100 V d U 7 4 50125 lt 77005012 8 T ASO 77005020 WE 62903208 77005140 zy 2 10378600 Description Qty Straight Thread Plug 1 Check Valve Replacement kit EN 30175202 Manifold Block 5 ne Nipple LG 1 2 NPT x 2 1 2 LG Ball Valve n nitens Humidity Indicator Air Safety Valve Gauge 0 160 psi Elbow 5 8 18 x 1 4 AA196900 Always Specify Model amp Serial Number Check Valve Models Manifold Assembly Serial Numbers All E 13 Midmark Corporation 2007 SF 1899 Rev 10 9 12 Exc E 14 Coalescing Filter Assembly Midmark Corporation 2007 SF 1899 Table Of Contents 77005009 10561500 D 77000871 D 1 029 5838 00 AA197000 Item Description Qty Coalescing Filt
16. DANGER Indicates an imminently hazardous situation which will result in serious or fatal injury if not avoided This Symbol is used only in the most extreme conditions ES J WARNING Indicates a potentially hazardous situation which result serious injury if not avoided CAUTION Indicates a potentially hazardous situation which may result in minor or moderate injury if not avoided It may also be a used to alert against unsafe practices Equipment Alert Indicates a potentially hazardous situation could result in equipment damage if not avoided In Section A test the components in the order indicated 1st V then 2nd Refer to Section B for component testing procedures The symbols below may be used in this manual to represent the operational status of table functions and components Indicates the function component is working properly No action required Indicates the function component is working but a problem exists Indicates the function component is not working at all 9 Ordering Parts The following information is required when ordering parts e Serial number amp model number Part number for desired part Refer to Exploded Views Parts Lists section Non warranty parts orders may be faxed to Midmark using the Fax Order Form in the back of this manual For warranty parts orders
17. C Pressure Terminal 62979100 St Switch Block BLU RED YEL P PUMP MOTOR J D aon Contactor 62983700 Nes Run Winding CONTACTOR G Terminal San E Contactor 62979200 mj 5 A BLK 2 2 NNNM CAP Hour RED BLK 5 e BLK CAPACITOR AND RELAY ASSEMBLY F Meter Contactor 62979300 T Ls J GRN YEL Cable B F um SPDT HOUR METER GRNVEL tact G Contactor Switch 62982500 sul us CAP 2 H Contactor SPDT 62982400 A 5 Common Ground Switch N CAPACITOR AND RELAY ASSEMBLY H SPDT PRESSURE Swicn Motor 62982600 1 RESSU TERMINAL Capacitor RED J Motor and 64884702 Relay VAC m A A SPDT K Motor Switch 62982700 BLU AA183800 L Terminal Low 62983500 E Block Voltage Terminal Low M Block Voltage 62983600 Terminal Low N Block Voltage 62983400 Wiring Diagrams Models CL32 D 8 Serial Numbers 0701L320001 thru 0901L320807 Midmark Corporation 2007 SF 1899 Rev 8 09 X Exc Table Of Contents Wiring Diagrams ClassicSeries Lubricated Compressor Dual 230 Volts RED BLU TO 24V Transformer BLU YEL FUSE 300 mA BLK BLK 4 CONTACTOR Sy RED RED gan GRN YEL Common Ground 230 VAC SUPPLY BLU BLU SOLENOID 230V SPDT SWITCH SUR RED RED Run
18. sioe o 1 Always Specify Model amp Serial Number Models Serial Numbers P72 Up to July 2008 Midmark Corporation 2007 SF 1899 Rev 4 11 J Back Table Of Contents 20220800 1 62963202 2 77001391 62945200 9 77002134 8 62945400 62900106 L 5 MRP70967 Item Description Qty 220220800 Kit includes items 1 9 9 1 Hose Flex PVC 702 1 2 Operatory High Pressure Hose Assy 1 010 0312 00 6 3 Adapter Female 1 ID x 1 NPT 1 4 Exhaust Silencer 1 5 wBR bber Foot 4 6 Bolt 5 16 18 x 1 2 4 223300 7 Elbow 45 Deg Street 1 2 NPT oe 8 e Indicator with O Rings zd 9 e Adapter Male 1 H x 1 NPT 1 Always Specify Model amp Serial Number A P52 P72 2 Gens Built August 2008 Built August 2008 Installation Kit i thru Present thru Present E 1 1 Midmark Corporation 2007 SF 1899 Rev 4 11 Table Of Contents 10 Gal 64997300 XC 040 0375 00 20 Gal b 64997400 p E 32 Gal c 64997500 62600117 040 0312 00 65971200 10 Gal a 63945500 20 Gal b 63945600 32 Gal c 63945700 a 62900712 3 10
19. 1 Nipple 3 8 NPT x 1 1 2 Brass 1 Anchor Bulkhead 1 4 1 ST 1 2 CA x 3 8 sss 1 MPT EL 1 2 CA x 3 8 Bushing 3 8 x 1 4 Tee Run 1 4 Street EL Thomas Heads 3 8 Gast Heads 1 4 Elbow 1 2 CON x 3 8 MPT Hose Assembly 3 8 NPT 16 L Always Specify Model amp Serial Number 21 22 Mee V1700965 V1701032 thru Present thru Present Midmark Corporation 2007 SF 1899 Pneumatic Tubes and Hoses Rev 10 29 15 J Back Table Of Contents 550916 20 50640 b 10589800 26 80450 04 4 50126 b PCB50125 Description Qty 62900905 1 Hose 1 2 X 28 L 2 Connector 1 2 50437 20 A 65970300 3 Hose 7 2 9 3 4 L inssin C BRV10100 D 4 a Thomas Heads 5 8 18 x 3 8 MPT 1 PCB50605 19 65961601 b Gast Heads 5 8 18 x 1 4 MPT 1 5 Pipe Tee 1 4 M x 1 4F x 1 4F 1 6 Thermal Switch 1 C 9 E 40156900 D 1 8 reete 1 9 Manifold
20. N Description Qty 1 Fuse 1 2 Fuse 1 3 amp s 3 Hour Meter 0 0 PowerAir only 4 Socket with Wire 1 5 Control Box Single Head Models b Twin and Triple Head Models Nut Keps 10 32 Terminal Block PER Screw Hex Head 8 x 5 8 Pressure Switch All CL models amp P21 P22 P32 P52 1 D otto ooi Screw 48 32 x 5 16 On Off Switch Locknut 1 2 Contactor Relay Mi nma Always Specify Model amp Serial Number 21 P22 Electrical Control Box Seria Models 0904P210365 0904P221146 0904P321145 E 1 5 1 2 thru Present thru Present thru Present Models CL21 CL22 CL32 CL52 Serial Number 09021210372 09031220296 09011320813 08101520126 V785000 thru Present thru Present thru Present thru Present thru Present P52 P72 0904P520474 0903P720191 thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 11 25 To Table Of Contents 50207 0 Su O_o PCB50620 8 2 50126 Description 1 Air H
21. Switch I 230 VAC SUPPLY y E ma emmm 4 Connector mms Models Serial Numbers P22 V795264 thru Present P22 0908P221309 thru Present Wiring Diagrams N CAPACITOR 20229400 Rev B Wiring Diagrams D 19 Midmark Corporation 2007 SF 1899 Rev 9 09 Miring Diagrams PowerAir Oil Less Compressor Triple 208 230 Volts Table Of Contents Capacitor Wiring Diagrams Serial Numbers Wire Part J K oe Harness From To Number Power Source Contactor 62978900 z Fans Included with Quiet Cover Option Only ED B Contact F 62979000 Thermal a ontactor use Q Switch Q PUMP MOTOR RED Terminal Block 62979100 w el BB BR D Contactor Terminal Block 62979200 P Hour Meter Contactor 62979300 Cable C 1 BLU onnector F SPDT Switch SPDT Switch 62982500 o i SPDT Switch SPDT Switch 62982400 BLU SOLENOID PUMP MOTOR VALVE H Motor Single SPDT Switch 62985100 1 SPDT Switch Motor Dual 62984800 RED DONOR J Contactor Pressure Switch 62983700 K Terminal Block Low Voltage 62983400 mx L Terminal Block Low Volt
22. BLU SOLENOID 230V BLK SPDT SWITCH RED RED BLK i BLK HOUR METER SPDT SWITCH RED RED L2 2 BLK T1 L1 PRESSURE GRN YEL SWITCH GRN YEL Wiring Diagrams RED Run Winding PUMP MOTOR SPDT SWITCI c Q Sem BLK 2 Winding 0 9 RED BLK YEL GRN YEL 2 5 CAPACITOR AND RELAY ASSEMBLY Run Winding PUMP MOTOR Q Start 2 Winding RED BLK YEL GRN YEL 2 5 CAPACITOR AND RELAY ASSEMBLY Run Winding PUMP MOTOR Start Ol 2 Winding RED BLK YEL CAP 2 CAPACITOR AND RELAY ASSEMBLY 5 20229200 Rev B Models Serial Numbers CL52 V795342 Thru Present CL52 0907L520143 thru Present Wiring Diagrams D 13 Midmark Corporation 2007 SF 1899 Rev 9 09 GoTo Taie OF Contents iring Diagrams PowerAir Oil Less Compressor Dual 115 Volts Capacitor Wire Part Harness From To Number 1 Fans Included with Quiet Cover Option Only BRN WHT A Power Source Contactor 62983000 Thermal B Contactor Fuse 62979000 Qs Terminal Block 62979100 e eA UMEN D Contactor Terminal Block 62979200 RED Hour Meter Contactor
23. 2 65970300 65961601 50435 002 1735 01 Description Qty 1 Hose Assembly 3 8 x 1 4 MNPT 15 L 1 2 Thermal Switch Bracket 3 Thermal Switch 4 Elbow 1 2 x 3 8 5 Assembly 3 8 x 1 4 361 1 6 Pte COOlGt tte 1 7 Purge orn seers 1 8 Elbow 7 16 20 x 1 4 MPT 2 9 Hose 1 4 5 16 18 26 L 1 n 10 Hose Assembly 3 8 NPT 21 1 1 C 62900712 e 11 Street Elbow 3 8 1 12 Hose Assembly 1 4 NPT 16 L 1 7 77005032 13 Street Elbow 1 4 NPT with Sealant 1 14 3 8 x 1 1 2 8 65971300 15 Anchor Bulkhead 16 ST 1 2 CA x 3 8 17 Manifold Clamp C 65970505 18 Pop Rivet 150 x 860 65970501 19 1 4 65970702 20 Nipple 1 4 x 20 C AA197600 21 Street Elbow 1 4 Short 22 Hose Assembly 3 8 16 L 1 Always Specify Model amp Serial Number N Models s r A Pneumatic Tubes Serial Numbers and Hoses 22 1 Midmark Corporation 2007 SF 1899 10 29 15 Ex
24. A 8 Table Contents Compression Cycle amp Purge Cycle Problem Motor runs Intermittently or Chugs PowerAI Oil Less Models Check for Blockage in Air Line Remove discharge hose from head test run If unit runs correctly check for obstruction in air line to storage tank Obstruction will be at an orifice or other restriction i Purge System qe Purge system by pulling open the pressure relief valve Corporation 2007 SF 1899 Rev3 09 Compression amp Purge Models Cycle Serial Numbers Compression Cycle continued Table Of Contents Problem Compressor Heads run but will not Pressurize to 100 PSI Refer To Solenoid Pressure Switch Coalescing Filter Intake Filter Checking for Leaks Compressor Heads 9th P21 P22 P32 Models Only Check for Worn Piston Cup Refer to Section B Compressor Heads P li Check for Blockage in Air Line Cath v Inspect all air lines for restrictions Lubricated Models Only Check for Pressure Build Up Remove discharge line hold finger over fitting Uf low pressure build up head s are defective and need replaced Clean or Replace Intake Filter Refer to Section B Intake Filter Note Intake filters on earlier versions are mounted on a T manifold Check Coalescing Filter 4
25. Installation Kit E 10 11 62983300 77001391 e 62900106 14 Q Note Elbow was not present on early units 12 70967 9 BMS20900 S amp Sp 65977600 8 10 BSW20472 EU AA196100 Note Refer to Date listed below Must use Kit 20220800 for any Units built August of 2008 to Present Items 4 5 7 8 9 and 10 are only available though Midmark for com pressors under warranty If compres sor is out of warranty these items are available at your local hardware store if needed for service 13 14 15 16 Description Qty 20199400 Kit includes items 1 16 Fresh Air Intake Hose 1 4 ID x 3 8 OD i325 Ss 2 e Drain Hose 16 sold by the inch AR Operatory High Pressure Hose Assy 1 SE Cross 27 i eme 3 e Hex Nipple 1 2 NPT x 1 2 6 PVC Pipe 2 SCH 40 6 1 2 PVC Bushing 2 x 1 2 X FPT 7 e Brass Hose Barb 1 2 MPT x 1 4 1 Wall Anchor 3 16 x 1 1 4 2 Screw 8 x 11 29 22242 221 2 Exhaust Silericet 1 Rubber Foot nnns 4 Bolt 5 16 18 x 1 2 4 Elbow 45 Deg Street 1 2 NPT 1 Indicator with O Rings 1 Not Shown 62988004 Pipe Hanger 2
26. Pressure Switch EALE E Note Intake filters on earlier versions i Quiet Cover Fans Oil Less Models B 38 are mounted on a T manifold et adio On Off Switch Clean Intake Filters Refer to Section B Intake Filters 4 1 Oil Less Compressors with Quiet Cover Only Check Fans Refer to Section B Fans Clean or Replace Exhaust Valve Refer to Section B Solenoid Check Exhaust Remove hoses one at a time between Heads and Pressure Relief Valve Verify exhaust air flow is not obstructed Check Voltage in Breaker Note If circuit breaker is tripped measure voltage at the line side of the vacuum switch while the unit is running Voltage 4 should be in the range of 208 230 for 230 volt units and kh WE 108 132 for 120 volt units Voltage outside this range may result in failure to start and possible damage to unit Install buck boost transformer as required Check Pressure Switcf 5 Refer to Section B Pressure Switch m Check Low Voltage Check On Off Switch 4 Refer to Section B Low Voltage Refer to Section B On Off Switch Models All Compression amp Purge Serial Numbers Cycle A 1 5 Midmark Corporation 2007 SF 1899 3 09 Table Of Contents roubleshootin g Compression Cycle amp Purge Cycle continued Refer To Problem Compressor runs too Frequently Solenoid Pressure Switch Co
27. Serial Numbers P32 0904P321145 thru 0909P321336 P32 V785000 thru V795559 0909P321337 thru Present P32 Wiring Diagrams D 21 Midmark Corporation 2007 SF 1899 Rev 8 09 Wing Diagrams PowerAir Oil Less Compressor P32 Triple 208 230 VAC o To Table Of Contents CAPACITOR SPDT SWITCH l RED BLU 77 PUMP MOTOR SOLENOID 230 BLK GRN YEL CAPACITOR SPDT SWITCH RED RED BLK cus PUMP MOTOR HOUR METER GRN YEL SPDT SWITCH RED RED 12 CAPACITOR BLK BLK T2 ani L1 PRESSURE GRN YEL SWITCH GRN YEL RED BLU TO eu 24V LIGHT Transformer BLU BLK 0 Thermal A Switch VEL FUSE 300 mA BLK BLK EH BLK Lc CONTACTOR TERM BLOCK RED D RED 600V 30A GRN YEL Common Ground 2 3 l 230 VAC SUPPLY t L BLK RED Fans Included with Quiet Cover Option Only Thermal Switch Connector d GRN YEL 20229500 Rev B Models Serial Numbers Wiring Diagrams D 22 P32 V7955560 thru Present Midmark Corporation 2007 SF 1899 Rev9 09 Wiring Diagrams PowerAir Oil Less Compressor Dual Cattani Head 208 230 Volts
28. co To Tabie or Contents a Midmark Compressors ClassicSeries Model Numbers Service and CL21 Parts Manual CL22 CL32 CL52 0 PowerAir ModelNumbers ClassicSeries p 2 1 Model CL32 d 22 ord es Sa Gum P32 S We ous o m 52 SUS PowerAir P72 Model P22 FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY Part 10540900 Rev B 5 20 2015 SF 1899 O 6 gt O Section Section GENERAL INFORMATION 16 lt lt iii Ordering Parts iii Serial Number Location iii Specifications iv v Model Identification Compliance Charts vi Warranty Information vii OPERATION amp TROUBLESHOOTING Compression Cycle A 2 Purge Cycle A 4 COMPONENT TESTING Pressure Switch B 2 Intake Filter B 8 Checking for Leaks B 11 Coalescing Filter B 12 Solernold 13 DesiccantTank B 16 Low Voltage B 17 Capacitor 20 Check Valve B 22 ON OFF Switch B 24 FUSC B 26 Lubricated Onl
29. Fans Included with Quiet Cover Option Only Wire Part pen Harness From To Number A Power Source Contactor 62978900 B Contactor Fuse 62979000 See C Pressure Terminal Block 62979100 Switch Connector PUMP MOTOR re D Contactor Terminal Block 62979200 SPDT SWITCH sect RED E N E Hour Meter Contactor 62979300 BLU SOLENOID F mee Cable VALVE BLK L I BIK F SPDT Switch SPDT Switch 62982500 RED G SPDT Switch SPDT Switch 62982400 F CONTACTOR GRN YEL G H Motor Single SPDT Switch 62982600 Ud PUMP MOTOR 2 BLK UTE SPDT Switch Motor Dual 62982700 Gloss RED gt 5 Contactor Pressure Switch 62983700 B J BLK E mes 5 5 GRN YEL SU il H Ta K Terminal Block Low Voltage 62983400 BLU WHT BLK YEL HOUR METER L Terminal Block Low Voltage 62983500 M Terminal Block Low Voltage 62983600 A Transformer Suis C peg NUS N ua Contactor 62984000 RED is Quiet Terminal Block amp uiet Cover erminal Bloc nD o thermal Plug Thermal Switch 62984500 Common Ground Switch Fan Power D 62984600 184500 Thermal Switch Terminal Block 62983900 Models P52 irina Di Serial Numbers 0701 520001 thru 0902P520467 Wiring Diagrams D 23 Midmark Corporation 2007 SF 1899 Rev 9 09 iring Diagrams PowerAir Oil Less Compressor Du
30. If indicator is red change filter E a Check for leaks or cracks Refer to Section B Coalescing Filter Check Exhaust Valve Refer to Section B Solenoid Check Pressure Switch Refer to Section B Pressure Switch Check for leaks in Office Air System and in DEN v Close the storage tank shut off ePump up storage tank to 100 PSI am elf pressure is maintained at 100 PSI for 15 20 minutes leak is not in compressor If pressure does not maintain Refer to Section B Checking for leaks T Models Compression amp Purge Serial Numbers Cycle A 9 Midmark Corporation2007 SF 1899 2 08 Table Of Contents gt bleshooti ng Compression Cycle continued ReferTo Problem Compressor cycles with no air being used Checking for Leaks 2nd ES for Air Leaks Refer to Section B Checking for Leaks 1st Check for Leak in Office Air System Close the storage tank shut off Les Pump up storage tank to 100 PSI AA187500 elf pressure is maintained at 100 PSI for 15 20 minutes leak is not in compressor A 10 Cement Midmark Corporation 2007 SF 1899 Table Of Contents Compression Cycle amp Purge Cycle continued Problem Moisture Indicator is Pink Refer To Desiccant Tank Solenoid Compressor runs to frequently Refer to Section A Compres
31. Product Model uris Mii bus Voltage 1 pond Level dBA With HxWxD Cover Weight pacity dBA Quiet Cover IN HxWxD LBS Ma Ize IN P21 1 3 5 2 1 5 10 115 16 0 20 65 60 27 26 24 32 26 25 225 2 22 1 3 5 2 1 5 10 208 230 7 0 20 65 60 27 26 24 32 26 25 225 2 P32 3 5 7 8 2 25 20 208 230 11 0 20 67 62 29x 33x26 33x33x28 295 2 P52 5 7 10 6 3 2 20 208 230 20 0 30 70 65 31x 33x26 33x33x28 345 2 72 7 10 159 48 32 208 230 29 0 40 73 68 33x40x27 39 40 30 425 2 www Midmark com e 1 800 Midmark V Midmark Corporation 2007 SF 1899 EA Information Model Identification Compliance Chart To Table Contents A Complies To Electrical Supply Requirements Model Description N E C AN 5 A T M 601 1 90 CL21 Cun x x 115 12 4 60 CL22 FRANE AMAT x x 208 230 6 60 CL32 ET 2e x 208 230 12 60 CL52 yang MEE x x 208 230 18 60 ray ork oreas p22 ST UE x x 208 230 7 60 x x 208 230 11 60 p22 208 230 20 60 P72 24 208 230 29 60 Midmark Corporation 2007 SF 1899 11 07 Table Of Contents General Information Warranty Information LIMITED WARRANTY Midmark Corpor
32. Releasing Pressure Compressor Not Running Whit oo Atmospheric 1 Air Red a Pressurized Air High Pressure Excessive Noise Overheating Compressor runs to Frequently Compressor Tripping Circut Breaker Purge Cycle The pressure switch will open shutting off Coalescing Dessin Q electrical current to compressor head s and LI an Closed the solenoid purge valve 1 Storage A mechanical valve on the pressure switch sa Air opens up to unload the compressor heads At the same time the unloader solenoid Normally Open Moisture opens starting the purge cycle aa Indicator P Air from the purge tank flows back through Ball Valve ifi PRO 1 the metered orifice Lis The clean dry air drives out the moisture Supply Air to Operatory AA184800 from the desiccant beads Models Serial Numbers Purge Cycle Midmark Corporation 2007 SF 1899 Exc Purge Cycle Electrical Schematic Pressure inside the system reaches 100 PSI 5 PSI causing the Pressure Switch Contacts to open Power is removed from the coil of the Contactor which opens the Contactor stopping the motor At the same time power is removed from the Normally Open Solenoid Valve Opening the valve allowing pressure to be released from the top of the compressor head to the E
33. Table Of Contents Note 208 230V Gast heads standard on units after serial number V1368137 115V Gast heads standard on units after serial number V1393525 Thomas Head Older style Thomas Head can be Note replaced with new style Gast head a 10570200 b 62987600 Capacitor 63947400 Gast Head 002 1667 00 b 002 1668 00 030 2118 00 b 64933901 X 77007027 041 0250 13 041 0250 13 AA198002 Note Rebuild kit parts can not be ordered separately Item Description Qty 1 Compressor Head Replacement includes item 2 thru 4 a Pel 115 sanete eee 1 b P22 amp P32 208 2 1 2 ea Adapter Plate Thomas Replacement 1 b Mounting Plate Gast Replacement 1 Mounting Feet includes item 4 ee 1 4 20 Hex Flange Thomas Head Capacitor a 115 Models itte b 208 230 VAC Models 6 Mounting Feet includes item 7 7 1 4 20 Hex Flange 1 Not Shown 8 Compressor Head Rebuild Kit 77001616 Thomas Head only ACA86075 Gast Head 9 015 3308 00 Thomas Black Fan Replacement 1 015 3307 00 10 Thomas White Fan Replacement 1 Al
34. Wiring Diagrams SOLENOID 230V SPDT SWITCH RED RED BLK BLK PUMP MOTOR Capacitor SPDT SWITCH mes 4 5 RED S es Thermal BLK Protector Circuit Breakers GRN YEL Fans Included with Quiet Cover Option Only Switch 39 MX 9 i m BLK GRN YEL Serial Numbers Models V795562 thru Present P52 0908P520573 thru Present Wiring Diagrams N Capacitor 5c ZA Thermal Protector Circuit Breakers GRN YEL 20229600 Rev B D 25 Midmark Corporation 2007 SF 1899 Rev9 09 Wing Diagrams PowerAir Oil Less Compressor Table Of Contents EH PUMP MOTOR Triple Cattani Head 208 230 Volts m sas Wire Part Fans Included with Quiet Cover Option Only RED pTO RED E Harness From To Number Thermal mE BLK Switch Q P F Bike R 62978900 5 BLK B Contactor Fuse 62979000 e Ce GRN YEL I C Pressure Terminal Block 62979100 OX G N BLU D Contactor Terminal Block 62979200 a BLU ces E a Contactor 6297
35. call Midmark s Service Department with the required information Customer Service 1 800 643 6275 Technical Service 1 888 279 1260 Serial Number Location gt i 10 Gallon Tank Models 195900 20 Gallon Tank Models 32 Gallon 2 Tank Models Serial Model Number Location Midmark Corporation 2007 SF 1899 Go To Tabie OF Contents eneral Information Weights Dimensions Electrical Specifications ClassicSeries Lubricated Compressor Models Classifications Class 1 No Applied Part Breaker Sound Dimensions Product Fresh Air Model rar ye Voltage 4 Size Level HxWxD Weight Intake Pipe pacity Amps dbA IN Ibs Size CL21 1 3 5 3 1 0 10 115 12 4 20 68 29 x 26 x 24 202 2 CL22 1 3 5 3 1 0 10 208 230 6 20 68 29 x 26 x 24 202 2 CL32 3 5 10 6 2 0 20 208 230 12 20 71 31 x 33 x 26 329 2 CL52 5 7 15 9 3 0 32 208 230 18 30 75 32 x 41 x 27 460 2 iv www Midmark com 1 800 Midmark Midmark Corporation 2007 SF 1899 Exc Weights Dimensions Electrical Specifications Table Of Contents General Information Oil Less Models Next Classifications Class 1 No Applied Part Dimensions Fresh Air Sound Sound Level Dimensions With Sound
36. 09011210370 thru 09031220294 thru 09011320807 thru0810CL520124 Models md P22 P32 P52 P72 Solenoid d 0703P210001 0703P220001 0703P210001 0703P210001 0703P210001 B 14 Serial Numbers thry0903P210361 thru0903P221139 thruos03P321137 thru0902P520467 thru0903P720190 Midmark Corporation 2007 SF 1899 8 09 Solenoid Testing Note This procedure is only for units with Serial Numbers listed below co To Tabie or contents Testing amp Repair Refer to Access Procedures Wiring Diagrams Exploded views Step 2 Set meter toV Step 1 Remove electrical box cover Refer to Section C Electrical Box Cover Step 3 Check if line voltage is present at solenoid wires 115 or 230 VAC f you have voltage then shut power off and clean solenoid f solenoid still doesnt work after cleaning replace SOLENOID 115V SPDT SWITCH To Clean Solenoid Wr A Loosen nut on top of solenoid and lift top off TAREE B Wipe stem off with a clean rag ROR Using a spanner wrench to remove stem from valve body 552000 1 If spanner wrench not available use standard wrench very carefully 5 D Clean internal valve plunger ports and seat E Reassemble 190600 Models CL21 CL22 CL32 CL52 All SerialNum ors 0902L210372 0903L220296 0901L320813 0810L520126 V785000 thru Present thru Present thru Present
37. 2007 SF 1899 Next Go To Tabie ot Contents Testing amp Repair Fuse Referto Check Function and Location Step 1 Turn power off Step 4 Remove fuse from electrical box Push in and turn cap counter clockwise Step 3 Remove terminal leads 5 Step 2 Remove electrical box cover Refer to Section C Electrical box cover Test continuity Set meter to Q Place meter probes on both fuse terminal Step 5 Visually check to see if fuse is burnt or broken Note Refer to table below Note If fuse is burnt broken replace with 1 3 250V Slo Blo fuse AA202500 Meter Reading Status Required Action OL off line Replace Fuse Step 6 Reinstall into electrical box 1 3 amp 250V Slo Blo fuse Push in and turn cap clockwise until it locks in place All Continuity checks ok Serial Numbers Midmark Corporation 2007 SF 1899 Rev 4 07 B 27 EZI co To Tabie or contents esting amp Repair Start Relay Referto Testing Function and Location WireDi ire Diagrams The start relay is located in the capacitor box The start relay switches the load current voltage EDO JEI VIBWS from the start winding to the run winding as the rpm increases and load balance changes as p required to optimize the performance characteristics of the electric motor Start Relay
38. 4 MNPT 15 L 1 p 2 Thermal Switch Bracket 4 50640 3 Thermal Switch n n 4 Elbow 1 2 CA x 3 8 40157000 5 Hose Assembly 3 8 T x 1 4 36 L 1 6 Pre Cooler esee 1 C PCB50615 7 Valve 1 8 Elbow 7 16 20 x 1 4 9 Hose 1 4 NPT 5 16 18 26 L 10 Hose Assembly 3 8 NPT 21 L C 62900712 11 Street Elbow 3 8 12 Hose Assembly 1 4 NPT 16 L 77005032 13 Street Elbow 1 4 NPT with Sealant 1 14 Bushing 1 2 x 9 8 iiie 65971300 15 Nipple 3 8 x 1 1 2 16 X Anchor Bulkhead 17 MPT ST 1 2 CA x 3 8 C 65970505 12 18 Manifold Clamp 65970501 19 Rivet 150 x 860 20 Coupling 1 4 C 65970702 197800 21 Nipple ms x B 22 Street Elbow 1 4 Short 65970703 23 Assembly 3 8 NPT 16 1 1 Always Specify Model amp Serial Number E 22 2 ME 070 i thru V1702887 thru V1702887 Midmark Corporation 2007 SF 1899 10 29 15 gt 50635 50325 50655 jon
39. 62979300 Connector Cable SPDT Switch SPDT Switch 62982300 SPDT Switch SPDT Switch 62982400 SALVE H Motor Single SPDT Switch 62985000 WHT SPDT Switch Motor Dual 62984700 CONTACTOR BLK PUMP MOTOR J Contactor Pressure Switch 62983700 T K Terminal Block Low Voltage 62983400 L Terminal Block Low Voltage 62983500 GAVEL B M Terminal Block Low Voltage 62983600 pues HOUR METER Compressor A tact 2984 N Plug Contactor 62984000 J Ier C SWITCH Quiet Cover Terminal Block amp Ht TERMINAL Plug Thermal Switch 62981900 PLOCK RED BLK BLU ll Fan Power 120 D RED JP 62984600 A Thermal o Cord Switch Thermal D F Terminal Block 62983900 EL Switch Common Ground AA184100 Models Serial Numbers Wiring Diagrams P21 0703P210001 thru 0903P210361 D 14 Midmark Corporation 2007 SF 1899 Rev 8 09 PowerAir Less Compressor Dual 115 Volts Thermal Switch m CONTACTOR 2 Z WHTTERM BLOCK CH 600V 30A GRNIVEL Common Ground r Table Of Contents HOUR METER BLK 12 T2 WHT NET PRESSURE SWITCH SOLENOID 115V CAPACITOR SPDT SWITCH WHT CAPACITOR PUMP MOTOR GRN YEL Fans Included with Quiet Cover Option Only
40. 7 Models 6122 Clee B 2 8 Serial Numbers All All Midmark Corporation 2007 SF 1899 Ea co To Tanie or contents nex Testing amp Repair Start Relay Testing Step 1 Tap capacitor box Note If motor starts relay was stuck replace relay Relay Test Step 3 Test continuity Set meter to Q Place meter probes on contacts 2 amp 5 Note 2 amp 5 are a resistance circuit from platform Remove front cover E Meter Reading Status Required Action i Start Low and Increases Relay OK Models CL32 CL21 Start Rela Serial Numbers ore ETa B 2 Midmark Corporation 2007 SF 1899 EZI co To Tabie or Contents esting amp Repair Compressor Heads Referto Function and Location Wiring Diagrams Atmospheric air is drawn in through intake filters to the Exploded views compressor head s where air is compressed and exhausted to the reservoir tank www midmark com File Name Heat is generated from the compression process Lubricated Head Replacement 10542300 CL52 All CL22 All CL21 CL32 Compressor Head Models B 30 Serial Numbers Midmark Corporation 2007 SF 1899 Testing amp Repair Referto Access Procedures J Back To Table Contents Compressor Heads Check Crank Shaft Check Thermal Overload Test _ Step 1 Turn power off
41. C PCB50647 a PCB50126 APT T b PCB50125 J 7 50620 eas Item Description Qty S 62900905 1 Hose 1 2 x 26 L 50435 e Hose Connector 1 2 3 PCB50437 Hose 1 2 x 9 3 4 1 3 65970300 ins C BRV10100 20 ow a Thomas Heads 2 8 18 3 8 1 C PCB50605 18 Za 65961601 b Gast Heads 5 8 18 x 1 4 MPT 1 Pipe Tee 1 4 M x 1 4F x 1 4F 1 5 2 6 Thermal Switch 1 C q gt 8 40156900 7 ThemmalSwith rrr rr 1 8 1 sau 21 EL 1 2 CA x 3 8 65971300 22 Bushing 3 8 x 1 4 23 Run 17 4 24 Hos 7 2 9 7L ue nasi ee 25 Street EL 5970506 2 Thomas Heads 3 8 Gast Heads 1 4 26 Elbow 1 2 CON x 3 8 MPT 65970703 27 Assembly 3 8 16 L 9 Manifold Clamp een 1 0 40 14 BGEL10907 10 1 11 Elbow 7 16 20 1 4 MPT 2 12 Hose Assembly 1 4 21 L 1 13 Hose Assembly S 8 NPT 21 L
42. CL52 All All CL21 CL32 Capacitor Relay Box C 4 Midmark Corporation 2007 SF 1899 Eu 02210 Access Procedures Table Contents Compressor Head Electrical Cover Lubricated Compressors Refer To Removal Installation Exploded Views Part Numbers ClassicSeries Models Removal Step 1 Disconnect power Removal Step 2 Remove two screws from top of compressor head electrical box Pull cover off Installation Step 1 Secure cover on top of compressor head electrical box Install and tighten two screws through top of cover 195000 Models E Compressor Head Serial Numbers All All Electrical Box C 5 Midmark Corporation 2007 SF 1899 co To Tabie or Contents ccess Procedures Sound Cover Electrical Box Cover accessory Refer To Page Removal Installation Exploded Views Part Numbers Removal PowerAir Models Step 1 Disconnect power Removal Step 2 Turn screws on top cover 1 4 turn counterclockwise S Remove top cover Installation Step 3 Install top panel Tighten by turning screws 1 4 turn clockwise Electrical Box Cover Removal Step 5 Remove electrical box cover from the front side of back panel G 6 Installation L Step 1 Install electrical box cover in front of back panel DA Tighten scr
43. Models Installation Kemo val hilt aR Sa Step 2 Drain air pressure from system Note Use ratchet with extension 3 4 socket to tighten valve Removal Manifold Step 3 Remove manifold cap Cap Remove check valve Note Use with extension and 3 4 socket to loosen valve Use needle nose pliers to lift check valve out of block A194700 S e HZ 20 e A C Models C 2 Check Valve Serial Numbers Midmark Corporation 2007 SF 1899 All RC Access Procedures J Back Table Of Contents Electrical Box Cover Refer To Removal Installation Exploded Views Part Numbers ClassicSeries Models Removal PowerAir Models Step 1 Disconnect power Removal Step 2 Remove screws Pull cover off Installation Step 1 Secure cover on front of electrical box Install and tighten four screws through front cover AA194800 Models Electrical Box Cover Serial Numbers C 3 Midmark Corporation 2007 SF 1899 co To Tabie or contents ccess Procedures Capacitor Relay Box Lubricated Compressors EX Exploded Views Part Numbers ClassicSeries Models Removal Installation Removal Step 1 Disconnect power Removal Step 2 Remove two screws from side of capacitor relay box Pull cover off e 194900 Models Serial Numbers CL22
44. Refer to Date listed below Must use Kit 20220900 for any Units built August of 2008 to Present Items 4 5 7 8 9 and 10 are only available though Midmark for com pressors under warranty If compres sor is out of warranty these items are available at your local hardware store if needed for service M 14 Note Elbow was not e present early units Item Description Qty 20199600 Kit includes items 1 1 7 1 Fresh Air Intake Hose 1 2 no fittings 1 2 Drain Hose 16 sold by the inch AR 3 Operatory High Pressure Hose Assy 1 4 61 PVC Cross 2 eee 1 SS 5 e Nipple 1 2 MNPT x 1 4 2 lt 6 sFilter Assembly 2 7 PVC Bushing 2 1 2 3 4 Su 8 Brass Hose Barb 1 2 MPT x 1 4 1 No 9 Wall Anchor S 16 x 1 1 4 2 10 Screw 8 x 1 1 2 11 Exhaust Silencer is 12 Rubber Foot 13 Bolt 5 16 18 x 1 2 14 Elbow 45 Deg Street 1 2 1 198000 15 Indicator with O Rings 1 Not Shown 62988004 16 Pipe Hanger 27 d 1 Always Specify Model amp Serial Number Models P21 P22 P32 cM Serial Numbers to July 2008 Up to July 2008 Up
45. Section C Quiet Cover Caution When testing components with power on use care to prevent electrical shock ContinuityTest Step 3 Test continuity Set meter to Q Place meter probes on switch Voltage Test Step 2 Set meter to V Check voltage at switch Place meter probes at fan connections on switch Check voltage at fans Meter Reading Status Required Action 5 Unplug fan wires Place meter probes fan wires 230 Volt Models lt 230 Volts Replace Fan 115 Volt Models lt 115 Volts 230 Volt Models 230 Volt be s Fan s OK 115 Volt Models 115 Volts C or Closed Reading Replace Switch Start Low and Increases Switch OK P22 P32 P52 P72 Accessory P21 i o Models B 40 Quiet Cover hans Serial Numbers Midmark Corporation 2007 SF 1899 Rev8 10 Access Procedures Check Valve Electrical Box Cover Only Models CL21 CL22 CL32 CL52 Capacitor Relay Box Compressor Head Electrical Cover Only Models P21 P22 P32 P52 P72 Quiet Cover Electrical Box accessory 6 Pressure Switch Cover Click GO TO PAGE button then enter desired page number to view any page in this document C 1 Midmark Corporation 2007 SF 1899 co To Tabie or Contents ccess Procedures Check Valve ReferTo Removal nstallation Exploded Views Part Numbers R ClassicSeries Models emova 7 1 Disconnect power PowerAir
46. Testing amp Repair Refer to Testing Wiring Diagrams Exploded views Models Serial Numbers All B 13 Midmark Corporation 2007 SF 1899 EZI co To Tabie or contents esting amp Repair Solenoid Refer to Access Procedures Wiring Diagrams Exploded views Testing Note This procedure is only for units with Serial Numbers listed below Refer to following pages for other Serial Number listings Step 1 Remove electrical box cover Refer to Section C Electrical Box Cover Step 2 Set meter to V Step 3 Place meter probes on contactor solenoid wire connections a Caution on When testing components with power on use care to prevent electrical shock Step 4 Clean solenoid Loosen nut on top of solenoid and lift top off Wipe stem off with a clean rag Using a spanner wrench to Meter Heading Status Required Action Lessthan 230 Volts on 230 Volt units remove stem from Lessthan 115 Voltson 115 Voltunits valve body If spanner Replace Solenoid wrench not available use standard wrench very 230 Volt Reading on 230 Voltunits carefully 115VoltReadingon 115 Voltunits Solenoid OK Clean internal valve Works after Cleaning plunger ports and Seat 5 Reassemble Models CL21 CL22 CL32 CL52 Serial Num Bars 0701L210001 0701L220001 0701L320001 0701L520001 thru
47. change along with a brief description of how you feel the paragraph figure should be changed Midmark Corporation ATTN Technical Publications Dept 60 Vista Drive Versailles Ohio 45380 Fax 937 526 8316 Please fax or mail a copy of this completed comment sheet to Page Number Paragraph Figure Description Ea CUSTOMER SERVICE DEPARTMENT ATTENTION IMPORTANT NOTES 1 Use this form for all non warranty orders only Warranty orders must be telephoned in 1 800 643 6275 2 FAX numbers to send order to 1 877 725 6495 3 All emergency orders must be received Midmark by 1 00 pm EST 4 All underlined headings should be filled in prior to submittal ADDITIONAL COMMENTS J Go To Table Of Contents SERVICE PARTS FAX ORDERING FORM Do not tear out this page Photo copy this page for use only DATE METHOD OF SHIPMENT PRIORITY NON EMERGENCY ORDER to ship within 72 hours if part s are in stock EMERGENCY ORDER to ship within 24 hours if part s are in stock see note 3 DEALER P O EB MIITDIMIAIIK ACCOUNT MODEL SERIAL SALES ORDER if applicable NAME SHIP TO ADDRESS CITY CONTACT PHONE FAX it PART NUMBER DESCRIPTION COLOR if applicable CREDIT CARD INFORMATION CARD TYPE NAME ON CARD
48. contents Eug roubleshooting Refer To Go To Page Compression Cycle amp Purge Cycle continued Purge Valve Problem Compressor Trips off the Circuit Breaker a aa AMA Do you hear air excaping from the solenoid valve after the compressor shuts off ist If yes check Solenoid i If no check purge valve for obstruction Refer to Purge Valve 1 8 Midmark Corporation 2007 SF 1899 Go To Tale ot Contents Testing amp Repair Sent Pressure Switch Intake Filter Checking for Leaks Coalescing Filter Solenoid Desiccant Tank Low Voltage Control Circuit amp Contactor B 18 Capacitor Check Valve ON OFF Switches Fuse Start Relay Lubricated Models Only B 28 i Compressor Heads Listed by Model CL21 CL22 CL32 and CL52 P21 P22 and P32 P52 and P72 Purge Valve Thermal Overload Switch Click GO TO PAGE button then enter desired page number to view any page in this document Midmark Corporation 2007 SF 1899 EZ co To Tabie or Contents esting amp Repair Pressure Switch Referto Testin Location and Function 3 Adjustment Wiring Diagrams During the Compression Cycle Exploded views When the storage tank is filled to the preset pressure the pressure switch will open and stop the compressor During the Purge Cycle The pressure switch shuts off current to the compre
49. hee riisit 1 12 Hose Assembly 1 4 NPT 16 L 1 77005032 13 Street Elbow 1 4 NPT with Sealant 1 14 Bushing 1 2 x 8 8 1 15 Nipple 3 8 x 1 1 2 aina 1 65970702 m 16 Anchor Bulkhead 17 MPT ST 1 2 x 3 8 18 Pop Rivet 150 x 860 19 MPT Elbow 1 2 CA x 3 8 20 Hose Assembly 3 8 T x 1 4 MNPT 15 L 2 21 Coupling 1 4 itt ttes 1 22 INipple 1 4 x20 aote 1 65970703 23 Assembly 3 8 16 1 1 Always Specify Model amp Serial Number D Pneumatic Tubes Models P52 P52 E 21 andHoses Serial Numbers pa th Midmark Corporation 2007 SF 1899 10 29 15 D C PCB50325 n 50655 2 5 e 62900905 D 2 1735 00 19 SES e 5 18 5 65970300 50435 50437 16 2 BRV10100 22 65961601 C 50605 Item Description C 69970200 5 40156900 Pipe Tee 1 4M x 1 4F gt Bushing 3 8 1 4 1 2 C PCB50640 3 Thermal Switch Bracket 4 Thermal Switch BCL10907 5 Pre Cooler 6
50. which removes 99 9997 of all particulate matter As the clean air travels through the desiccant tank it is dried to 25 F 31 7 Celsius dew point The clean dry air flows into the main storage tank through a check valve Some air is directed to the purge tank As both tanks fill the pressure switch opens at preset pressure and stops the compressor Intake Air PreCooler 1 Compressor Running 1 Coalescing Filter mms Dessicant Tx Bottom Port H ottom Po ae Normally Open Solenoid Valve Closed Pressure Switch Contacts Closed 7 Models Serial Numbers Compression Cycle Midmark Corporation 2007 SF 1899 7 23 08 Storage Tank Pressurizing Table Of Contents Troubleshooting Compressor will not Start Motor runs Intermittently or Chugs ClassicSeries Lubricated Models A 7 PowerAir Oil Less Models Compressor Heads run but will not Pressurize to 100 PSI Cycles with no Air in use Moisture Indicator is Pink Element Indicator is Red High Pressure Excessive Noise Overheating Compressor runs to Frequently Excessive Oil Use Lubricated Only Compressor Tripping Circut Breaker Purge Tank Pressurizing White Atmospheric Red E Pressurized Air Open Check Valve Storage Air EQUIPMENT
51. 0124 d Wiring Diagrams Midmark Corporation 2007 SF 1899 Rev 8 09 D 11 Diagrams ClassicSeries Lubricated Compressor Triple 230 Volts Table Of Contents RED Run Winding PUMP MOTOR SPDT SWITCH Start BLU 1 2 Winding RED 1 BLK 2 BLU BLU RED BLK YEL GRN YEL 24 SOLENOID LIGHT Transformer 2930Y BLK BLU SPDT SWITCH 22 RED RED CAP 2 5 CAPACITOR AND RELAY ASSEMBLY YEL BLK BLK HOUR METER Run Winding PUMP MOTOR FUSE Stat OJ 300 mA 2 Winding SPDT SWITCH RED RED T RED BLK YEL Tg E m er GRN YEL CONTACTOR T2 TERM BLOCK RED T1 RED RED I 600V 30A he L1 PRESSURE GRN YEL SWITCH O 2 lI 5 GRAVEL CAPACITOR AND RELAY ASSEMBLY Common Ground Run Winding PUMP MOTOR Q Stat O 2 Winding 230 VAC SUPPLY RED BLK YEL GRN YEL O CAP 2 5 CAPACITOR AND RELAY ASSEMBLY AA183901 Models CL52 CL52 Wiring Diagrams D 12 Serial Numbers 08101520126 thru 09071520142 01785000 thru V795341 Midmark Corporation 2007 SF 1899 Rev 9 09 o To Table Of Conten ClassicSeries Lubricated Compressor RED CL52 Triple 230 VAC BLU 24V LIGHT Transformer BLU YEL FUSE 300 mA BLK BLK BLK CONTACTOR c RED GRNIYEL Common Ground 230 VAC SUPPLY BLU
52. 01600 P22 Fan P21 115V sss 2 77001605 P32 amp P52 b P22 P32 P52 P72 230 2 77001606 Always Specify Model amp Serial Number ReplacementParts for Models Sound Cover Accessory Serial Numbers ALL Built from 9 2009 to Present E 27 1 Midmark Corporation 2007 SF 1899 Rev 9 10 12 Back Table Of Contents COMMENTS The Technical Publications Department of Midmark Corporation takes pride in its manuals We are sure that our manuals will fill all your needs when you are perform ing scheduled maintenance servicing or repairs on a Midmark product However if you find any errors or feel there should be a change addition or deletion to the manuals please let us know We will correct any errors that we are made aware of and we will review requests for changes additions or deletions to the manuals and incorporate those requests deemed appropriate If you see something in one of our manuals that you like or dislike please let us know Also if there is something you feel we could do to produce a better manual please let us know If an error is found please list the page and paragraph figure in which the error was found along with a brief description of what the error is If the correction to the error is known please include that information also If a change addition or deletion is being requested please list the page and paragraph figure needing the
53. 0905 C PMS50916 5 2 55 50126 50207 50437 oT 50605 O 77005032 18 65971300 J 65970506 AA197200 Pneumatic Tubes Hoses 17 Midmark Corporation 2007 SF 1899 Description Air Hose Elbow 5 8 18 x 1 4 Nipple Close 1 4 NPT Reducer 3 8 x 1 4 Elbow 1 2 x 3 8 MPT Clear Hose 1 2 Dia x 26 L Tee Hose Connector 1 2 Clear Hose 1 2 Dia x 9 3 4 L Pipe Tee 1 4 M x 1 4 F x 1 4 F Air Hose Pop Rivet 150 x 860 Manifold Clamp Pre Cooler Tube MPT ST 1 2 CA X 9 8 iii ini 2 Anchor Bulkhead eene 2 Nipple 3 8 NPT x 1 1 2 Brass 1 Purge Valve rne 1 Elbow 7 16 20 1 4 Hose Assembly 1 4 NPT 21 L Hose Assembly 3 8 NPT 21 L Street Elbow 3 8 Hose Assembly 1 4 16 L Street Elbow 1 4 NPT with Sealant RDC Bushing 1 2 x 1 4 Seal Hose Assembly 3 8 16 L Always Specify Model amp Serial Number CL32 V785000 thru Present 0701L320001 Serial Numbers thru Present Models CL32 Rev9 15 J Back Table Of Contents 1 80450 11 550916
54. 1 Up to July 2008 Up to July 2008 Installation Kit Serial Numbers Models E 4 Midmark Corporation 2007 SF 1899 Rev 7 28 14 Exc Table Contents Pu gn Zo 8500 2 65977700 5 002 1804 00 6 jJ 9 520900 10 BSW20472 Nu 5 lt 7 51123 77002134 15 2 M 8 65977600 ezeontos 62900106 14 7 Note Elbow was not present on early units 8s 040 0312 00 13 B 11 62983300 196500 Note Refer to Date listed below Must use Kit 20221000 for any Units buit after the listed Items 4 5 7 8 9 and 10 are only available though Midmark for com pressors under warranty If compres sor is out of warranty these items are available at your local hardware store if needed for service Item akwon o mre NO Description 20199100 Kit includes items 1 18 e Fresh Air Intake Hose 1 2 no fittings 1 e Drain Hose 16 sold by the inch AR e Operatory High Pressure Hose Assy 1 SL PVC Cross 2 e Nipple 1 2 MNPT x 1 4 NPT Filter Assembly Kit ES PVC Bushing 2 x 1 2 Brass Hose Barb 1 2 MPT x 1 4 Wall Anchor 3 16 x 1 1 4 Screw 8 x 1 1 2 Exhaust Silencer Rubber Foot Bolt 5 16 18 x 1 2 Elbow 45 Deg Street 1 2 NPT ndic
55. 19 and Hoses erial Numbers thru v1700965 thru V1701032 Midmark Corporation 2007 SF 1899 Rev10 29 15 LA PCT80450 11 C PMS50916 OF 50920 a PCB50640 24 b 10589800 3 PCT80450 04 a 50126 6 50647 b 50620 D 65970300 D pa C PCB50437 20 C 50435 21 5 65961601 Bo 4 30187400 50605 ag 5 6 C 65970200 BRV10100 5 8 10 9 PcB50640 10 12 13 14 15 62900712 it 17 18 77005032 19 ie 20 21 e 65971300 gt 23 65970505 16 24 65970505 25 65970702 26 2 XQ Description Hos 1 2 26 E eei Hose Connector 1 2 Hose 1 2 X 9 3 4 1 ico Elbow a Thomas Heads 5 8 18 x 3 8 MPT 1 b Gast Heads 5 8 18 x 1 4 MPT 1 uai reri oe cete 2 Thermal Switch Bracket 1 Thermal Switch 1 1 Pop Rivet 150 x 860 1 Manifold Clamp 1 Purge Valve nennen 1 Elbow 7 16 20 1 4 2 Hose Assembly 1 4 21 L 1 Hose Assembly 3 8 16 L 1 Bushing 1 4 FPT x 1 2 MPT Hose Assembly 1 4 NPT 16 L Street Elbow 1 4 NPT with Sealant
56. 3 8 1 C 65970505 22 BUSHING 3 8 X 1 4 aure 1 65970501 3 23 Pipe Tee 1 4 M x 1 4 x 1 4 2 24 HOSE 1 25 Close 1 4 3 26 Reducer 3 8 X 1 4 sese 3 65970703 27 Elbow 1 2 CON x 3 8 MPT 3 28 Hose Assembly 3 8 16 L 1 AA197400 C 65970702 28 Always Specify Model amp Serial Number Models CL52 52 0 Pneumatic Tubes 07011520001 Serial Numbers thru Present thru Present andHoses E 1 8 Midmark Corporation 2007 SF 1899 Rev 10 11 Table Of Contents 80450 1 1 E PMS50916 PMS50920 a PCB50640 b 10589800 3 PCT80450 04 a PCB50126 50647 24 b PCB50125 50620 3 3 50207 2 lt gt 20 9 65970300 D Description Qty 9 1 2 26 50435 22 2 Connector 1 2 50437 21 65961601 3 Hose 1 2 x 9 3 4 L gt 2 4 Elbow 30187400 a Thomas Heads 5 8 18 x 3 8 MPT 1 50605 20 222 b Gast Heads 5 8 18 x 1 4
57. 9300 N RED LR BLU SOLENOID The SPDT Switch SPDT Switch 62982500 VALVE BLK 5 BLK G SPDT Switch SPDT Switch 62982400 Circuit Breakers Um F Motor Single SPDT Switch 62982600 CONTACTOR cave HOS BLK CE BLK l SPDT Switch Motor Dual 62982700 G PUMP MOTOR BLK BLK Capacitor J Contactor Pressure Switch 62983700 SEDTSWITEH SES E K Terminal Block Low Voltage 62983400 GRNIYEL E H E x HOURS Protector L TerminalBlock Low Voltage 62983500 Bug wee qe Al P M Terminal Block Low Voltage 62983600 1 Breakers PRESSURE YEL GRN YEL I N ioo Contactor 62984000 A Transformer qu TERANA BLOCK RED o Quiet Cover Terminal Block amp 62984500 Bi Plug Thermal Switch 230 VAC 2 YEL Wem ms Thermal Fan Power Common Ground Switch P Terminal Block 62984600 E D BLU Thermal Terminal Block 62983900 AA184600 Switch R Motor Triple SPDT Switch 62982800 Models P72 Wiring Diagrams Midmark Corporation 2007 SF 1899 Serial Numbers 0701P720001 thru 0903P720190 Ea Table Of Contents PowerAir Oil Less Compressor Triple Cattani Head 208 230 Volts Wiring Diagrams PUMP Capacitor SPDT SWITCH RED BLU Bs ZS RED pae 5 eqs BLU BLK E BLU 24V
58. A 1 2 Cycle Midmark Corporation 2007 SF 1899 Rev2 08 ing Problem High Pressure ReferTo Check Valves Table Of Contents Compression Cycle amp Purge Cycle continued Troubleshoot Pa r a k ot 1 Check Exhaust Cr Remove hoses one at a time between Heads and Pressure Relief Valve Verify exhaust air flow is not obstructed 2 S Clean or Replace Check Valve Refer to Section B Check Valve Check Pressure Switch Settings Check contacts and operating range 80 100 psi TEE AA187800 Models Compression amp Purge Serial Numbers Cycle Midmark Corporation 2007 SF 1899 A 13 Es n Table Of Contents roubleshootin g Compression Cycle amp Purge Cycle continued ReferTo Problem Excessive Noise Checking for Leaks Intake Filters Check for Leaky Hose Leaks Refer to Section Checking for Replace Intake Filters Refer to Section B Intake Filters Oil Less Compressors with Quiet Cover m Check Fans Refer to Section B Fans All Compression amp Purge Models A 1 4 Cycle Serial Numbers Midmark Corporation 2007 SF 1899 2 08 Table Of Contents Compression Cycle amp Purge Cycle continued Refer To Intake Filter Solenoid Exhaust Valve Problem Overheating
59. ALERT Room temperature should be between 40 and 100 F 4 C to 38 C Lack of proper ventilation is the main reason for premature compressors failures Whenever possible use exhaust fan to bring cool air from dental office to the D Moisture Indicator SY 7 27 l so the compressor can breathe in fresh outside air Exhaust the stale hot air out through the roof or side wall 100 PSI equipment room or run fresh air intake lines to the outside Supply Air to Operatory AA184700 All Back Table Of Contents Low Ing Compression Cycle Referto Electrical Schematic Wire Diagrams eSupply Line Voltage is always present on one side of the Contactor contacts Troubleshoot Solenoid Valve Normally Open when not energized ENERGIZED CLOSED Line Voltage is also being supplied to the 240 24 VAC transformer energizing it Transformer supplies 24 VAC to the On Off switch on the wall and to one side of the 24 VAC Contactor Coil When the On Off switch is turned to the on position and the Pressure Switch is closed LINE w 24 VAC Coll the Contactor Coil is energized closing the a contacts Compressor RUNNING With the contacts closed line voltage is supplied to one side on the Vac Unit On Off switch HOUR ME
60. Clamps 1 PcB50640 14 BCL10907 10 Purge Valv un 1 11 Elbow 7 16 20 x 1 2 17 12 Hose Assembly 1 4 21 L 1 C 13 Hose Assembly 3 8 NPT 21 1 1 14 Street EL 3 87 1 15 Hose Assembly 1 4 NPT 16 L 1 62900712 16 16 Elbow Street 1 4 NPT with Sealant 1 17 Bushing 1 2 Xx 3 8 1 18 Nipple 3 8 NPT x 1 1 2 Brass 77005032 19 20 MPT ST 1 2 CA x 3 8 21 Pop Rivet 150 x 860 65971300 22 MPT EL 1 2 CAX 3 23 S 8 x 1 4 24 7 4 65870805 25 1 2 9 3 7 L 26 Street EL 65970702 AA197600 Thomas Heads 3 8 Gast Heads 1 4 65970703 27 Elbow 1 2 CON x 3 8 28 Hose Assembly 3 8 16 L 1 Always Specify Model amp Serial Number 2 2 20 LIS Models 0703 320001 V785000 andHoses Serial Numbers thru V1703515 thru V1703515 Midmark Corporation 2007 SF 1899 Rev 10 29 15 Pms50916 23 a PCB50640 b 10589800 gt lt PCT80450 04 24 PCH50207 550920
61. Disconnect power to the compressor Step 2 Access electrical box Refer to Section C Quiet Cover Continuity Test Step 3 Test continuity Set meter to Q Disconnect switch at Transformer Place meter probes on ends of switch Attention AA194200 To avoid compressor overheating and thermal shutdowns equipment room must be properly ventilated Ambient temperature should not exceed 104 Fahrenheit 40 Celsius Meter Reading Status Required Action O or Open Reading Replace Switch Start Low and Increases Switch OK Thermal Overload Models P21 P22 P32 P52 P72 B 3 8 Switch Serial Numbers All All All All All Midmark Corporation 2007 SF 1899 Rev3 09 co To Tabie or contents 7 1 Testing amp Repair Quiet Cover Fans Accessory for PowerAir Models Referto Testing Access Procedures Wiring Diagrams Exploded views Location and Function The thermostat closes at 95 7 The termostat opens at 70 degrees degrees NOTE Quiet Cover assembly instructions are provided with Quiet Cover 193400 Serial Numbers Accessory Models P32 Quiet Cover Fans B 39 8 10 Midmark Corporation 2007 5 1899 co To Tele oF contents esting amp Repair Quiet Cover Fans Accessory for PowerAir Models ae Access Procedures Testing Step 1 Access fan electrical box Refer to
62. Gal a 64997000 20 Gal b 64997100 32 Gal c 64997200 C 77009108 Refer To ClassicSeries Specifications i PowerAir Specifications Check Valve Manifold Assy Coalescing Filter Assy Electrical Control Box Note Refer to Specification Charts for each Models Gallon and Voltage 2 Description 1 Saddle eei Hex Flange 3 8 16 x 3 4 3 Flat Washer 5 16 4 Hex Flange 5 8 16 x 1 2 5 Flange 5 8 18 x 1 2 6 Purge Walks iiir term rt toes 7 Street Elbow 1 4 Short 8 Tank Assembly tienes 9 Nipple LG 1 2 NPT x 21 2 LG SS Seal 1 10 Manifold Refer to Check Valve Manifold 11 12 18 14 Desiccant Dryer 1 Bushing 1 4 x 1 8 Nipple Close 1 4 1 Solenoid Assembly Listed by Model a CL22 a 10 Gal 64997800 62903208 b CL32 b 20 amp 30 Gal 64997900 c CL52 d P22 7 77001617 s a 002 1383 00 14 f P52 b 002 1384 00 PCB50621 9 72 002 1385 00 ES B i 5 1 22 Red 77002055 15 Coalescing Filter Refer to Filter Assy f 2 1 16 Electrical Box 1 002 1388 00 17 Phillips Pan HD Screw 6 32 x 1 2
63. L220001 thru 0901L210370 thru 0903L220294 P21 P22 0703P210001 0703P220001 thru 0903P210361 thru 0903P221139 Models Serial Numbers CL32 0701L320001 thru 0901L320807 P32 0703P210001 thru 0903P321137 Models Serial Numbers nex Testing amp Repair Referto Adjustment Access Procedures Step 6 Place meter probes on both yellow wires Attention Test Pressure Switch during purge cycle During compression cycle Pressure Switch is closed and has no voltage 0703P210001 thru 0903P720190 B 3 Pressure Switch Midmark Corporation 2007 SF 1899 8 09 co To Tabie or Contents esting amp Repair Pressure Switch continued Refer To Testing Note This procedure is only for units with Serial Numbers listed below Function and Location Adjustment Step 1 Perform Adjustment Step 2 Procedures Refer to Section B Vacuum Switch Adjustment E tep 2 Turn power off y Wire Diagrams Exploded Views If there are replace pressure switch Step 3 Remove vacuum switch cover and verify there are no black burnt melted wires Refer to Section C Vacuum Switch Cover Step 4 Turn power on WARNING High Voltage When testing components with power on use care to prevent electrical sho
64. Manifold Clamp 7 Purge Valve ient re tec 8 8 Elbow 7 16 20 x 1 4 2 e 9 Hose Assembly 1 4 NPT 21 L 1 62900712 10 Hose Assembly 3 8 NPT 21 1 1 B 11 Street Elbow 3 8 1 12 Hose Assembly 1 4 16 L 1 77005032 13 Street Elbow 1 4 NPT with Sealant 1 14 Nipple 3 8 x 1 1 2 sss 65971300 15 Anchor Bulkhead 16 ST 1 2 x 3 8 17 Rivet 150 x 860 18 Elbow 1 2 CA x 3 8 65970506 19 Hose Assembly 3 8 T x 1 4 MNPT 15 2 20 Coupling 1 4 iiim 1 C 65970702 197700 21 Nipple 1 4 x 20 sss 1 22 Hose Assembly 3 8 16 L 1 Always Specify Model amp Serial Number 52 Pneumatic Tubes _ Models V1703322 Serial Numbers thru Present Midmark Corporation 2007 SF 1899 Rev 10 29 15 J Back GoTo Table Of Contents To Table Of Contents 50635 PCB50325 PCB50655 20 pem 002 1735 00 CNN 65970300 06 65961601 0 PCB50435 J 5 002 1735 01 PCB50437 50605 16 65970200 Oy Item Description Qty 1 Hose Assembly 3 8 x 1
65. NN 26 Ba C 77002055 G5 LC C PCH50207 24 5 PCT80450 04 62900905 eV PCB50620 e 79 lo PCHS0208 Item Description Hose 1 2 X26 E iste teh en Hose Tee Connector 1 2 Hose 1 2 x 9 IMA rsisi 5 09 6 NS 50437 19 29 5 62967308 BRV10100 1 50606 18 2 3 4 PUA OSS 5 Hose Assembly 1 4 MNPT 28 L 1 6 7 8 9 65970200 p Elbow 5 8 18 x 1 4 3 QUT BEL10907 Manifold Clamp 1 C 62903606 AL t Pre Cooler 1 Purge Valve TE 1 8 40157000 i 50640 16 10 Elbow 7 16 20 1 4 2 E 11 Hose 1 4 NPT 5 16 18 ST THD 26 L 1 12 Hose Assembly 3 8 21 L 1 13 Street Elbow 3 8 14 Hose Assembly 1 4 161 15 Street Elbow 1 4 NPT with Sealant 1 16 Bushing 1 2 MNPT x 1 4 FNPT with Seal 1 77005032 17 Nipple 3 8 NPT x 1 1 2 Brass 1 18 X AnchorBulkhead 7 4 10 65971300 19 MPT ST 1 2 CA x 3 8 20 Pop Rivet 150x 860 is 21 MPT EL 1 2 CA x
66. PACITOR AND RELAY ASSEMBLY 230 VAC SUPPLY 183701 Models CL22 CL22 Serial Numbers 09031220296 thru 0907L220318 V785000 thru V795558 D 6 Midmark Corporation 2007 SF 1899 Rev 9 09 Exc Table Of Contents Next Wiring Diagram Serial Numbers fec TM ClassicSeries Lubricated Compressor RED CL22 Single 230 VAC TO e 24V EIGHT Transformer BLU BLU BLU YEL SOLENOID HOURS 230V HOUR METER FUSE 300 mA SPDT SWITCH Run Winding l BLK BLK BLK L2 ve o D Start Ed CONTACTOR T2 BLK 2 on TERM BLOCK RED Ti RED 30A liest RED 11 RED BLK YEL PRESSURE SWITCH GRN YEL GRN YEL I Common Ground CAP 2 5 CAPACITOR AND RELAY ASSEMBLY 230 VAC SUPPLY 20229000 Rev B Models CL22 CL22 V795559 thru Present 09071220319 thru Present Wiring Diagrams D 7 Midmark Corporation 2007 SF 1899 Rev 9 09 Table Of Contents Wing Diagrams ClassicSeries Lubricated Compressor Dual 230 Volts Wire Part Harness From To Number SOLENOID VALVE Power PUMP MOTOR Source Contactor 62978900 RED Run Winding RED BLK B Contactor Fuse 62979000 a NE
67. SOLENOID Circuit Break LIGHT transformer n BLU Capacitor OS 5 BLK a Thermal RED SPDT SWITCH lt S c Switch Gs GRN YEL Thermal YEL BLK BLK HOUR METER Circuit Breakers FUSE PUMP MOTOR 300 mA Capacitor SPDT SWITCH SE RED GRN YEL BLK BLK BLK L2 Thermal BLK BLK Protector CONTACTOR T2 a TERM BLOCK RED T1 7 BE zT 2 l PRESSURE GRN YEL SWITCH GRNIYEL GRN YEL Common Ground pem Fans Included with Quiet Cover Option I Switch 7 230 SUPPLY ae uu 184601 1 9 Conector d 2 ERE BLK GRN YEL RED Models P72 P72 Wiring Diagrams Serial Numbers 0903P720191 thru 0909 720227 V785000 thru V795511 D 27 Midmark Corporation 2007 SF 1899 Rev 9 09 iring Diagrams PowerAir Oil Less Compressor RED P72 Triple 208 230 VAC BLU o To Table Of Contents TERM BLOCK RED 30A GRNIYEL Common Ground 230 VAC SUPPLY Thermal Switch E 2 EG D D D m PRESSURE SWITCH E BLU 42 bsg M BLU D BLK Ea SOLENOID 230V RED Thermal 2 Circuit N PDT SWITCH RED m RED GRN YEL a Breakers GRN YEL GRN YEL Thermal 1 Switch 1 _ Connector sae ae GRN YEL RED Fans Include
68. TER eWhen the Vac Unit On Off switch is turned on line voltage is supplied to the motor CLOSED Below Pressure Setting elf the Pressure Switch is at 80 PSI 5 PSI or below it s contacts are closed Pressure Power Source Fuse Switch elf the Contactor is closed Line voltage is Wall TERMINAL i i gt i On Off BLOCK then supplied to the Compressor energizing Transformer it and the normally open Solenoid Valve ON closing the valve This prevents the compressed air from being discharged Common Ground The system will continue to run until the pressure mS inside the system reaches 100 PSI 5 PSI Eariler Low Voltage Single Head Unit Shown Models Sonet NUmBore All Compression Cycle A 3 Midmark Corporation2007 SF 1899 Rev3 09 Table Of Contents TI ubleshooting Note Under normal operation conditions a small amount of moisture with some oil may be under the unloader exhaust muffler This is not a malfunction It is evidence of what the filter on the Desiccant Drying System captured the moisture and did not permit it to enter the operatory air supply Troubleshooting Motor runs Intermittently or Chugs ClassicSeries Lubricated Models A 7 PowerAir Oil Less Models Moisture Indicator is Pink Element Indicator is Red PreCooler Intake Intake Check Valve Purge Tank
69. Voltage Refer to Section B Low Voltage Check On Off Switch Refer to Section B On Off Switch Check for Stuck Relay If the start capacitor is warm to the touch start relay is not releasing ES Replace the start relay Check Pressure Switcf wa ral Refer to Section Pressure Switch ee i k 9th Check for Stuck Check Valv 9 v Refer to Section B Check Valve Check Ambient Room Temperature Verify temperature of room is not subjected below 40 Fahrenheit or hard starting may result Use Midmark Oil pn 77000953 Refer to Section B Solenoid AA187300 ee Exhaust Valve amp Midmark Corporation 2007 SF 1899 9 09 7 TI ubleshooting Refer To Low Voltage On Off Switch Pressure Switch Check Voltage in Breaker Note If circuit breaker is tripped measure voltage at the line side of the vacuum switch while the unit is running Voltage should be in the range of 208 230 for 230 volt units and 108 132 for 120 volt units Voltage outside this range may result in failure to start and possible damage to unit Install a buck boost transformer as required 2nd Check Low Voltage Refer to Section B Low Voltage E 1 Check On Off Switch GTA Refer to Section B On Off Switch Check Pressure Switcf Refer to Section B Pressure Switch
70. Winding PUMP MOTOR Q Stat O BLK BLK 2 Winding HOUR METER RED BLK YEL GRN YEL SPDT SWITCH RED RED i BLK L2 T2 BLK BLK D 2 RED Uu 5 L1 CAPACITOR AND RELAY ASSEMBLY PRESSURE GRN YEL SWITCH Run Winding PUMP MOTOR 2 Start 2 Winding RED BLK YEL GRN YEL 2 5 CAPACITOR AND RELAY ASSEMBLY AA183801 Models Serial Numbers CL32 0901L320813 thru 0906L320846 CL32 V785000 thru V795281 Wiring Diagrams D 9 Midmark Corporation 2007 SF 1899 Rev 9 09 iring Diagrams Table Of Contents RED BLU ClassicSeries 2 2 BLU Lubricated Compressor BLU WHT 32 Twin 230 VAC LIGHT SOLENOID Transformer 230V BLU 7 RED SPDT Run Winding PUMP MOTOR c Start YEL BLK BLK 2 2 Winding HOUR METER RED BLK YEL FUSE GRN YEL 300 mA SPDT SWITCH RED RED I BLK BLK cH BLK L2 Lo CONTACTOR T2 BEK 2 RED 1 5 RED TERM BLOCK RED Um L1 i CAPACITOR AND RELAY ASSEMBLY PRESSURE GRN YEL SWITCH NN Run Winding PUMP MOTOR GRN YEL Common Ground Stat O 2 Winding RED BLK YEL 330 VAG GRN YEL SUPPLY 2 5 CAPACITOR AND RELAY ASSEMBLY 20229100 Rev B Models CL32 CL32 Wiring Diagrams Serial Numbers V795282 thru Present 0906L320847 thru Present D 10 Midmark Corporati
71. age 62983500 B M Terminal Block Low Voltage 62983600 Compressor HOUR METER N Plug Contactor 62984000 J PRESSURE YEL o Quiet Cover Terminal Block amp 62984500 Gaines Plug Thermal Switch A ransformer SEE BLOCK Fan Power RED P Cord Terminal Block 62984600 ORN mm or 230 VAC 30 4 YEL RED Siml ED m M Thermal Switch Q Switch Terminal Block 62983900 D BLU R Motor Triple SPDT Switch 62984900 AA184300 Models P32 0703P320001 thru 0903P321137 Midmark Corporation 2007 SF 1899 Rev 8 09 PowerAir Less Compressor Triple 208 230 Volts Table Of Contents Low Wiring Diagrams CAPACITOR SPDT SWITCH PUMP MOTOR BLU 24V SOLENOID GRN YEL LIGHT Transformer 230V BLK BLU CAPACITOR Thermal TA SPDT SWITCH a Switch l YEL HOUR METER FUSE 300 mA GRN YEL SPDT SWITCH RED RED BLK BLK BLK L2 CAPACITOR NTA BLK BLK CONTACTOR T2 TEE RED RED 600V 30A PUMP MOTOR PRESSURE GRN YEL SWITCH GRNIYEL GRN YEL Common Ground em gt Fans Included with Quiet Cover Option Only Thermal Switch eu 230 SUFPEY 184301 17 _ _ Connector BK GRN YEL RED Models
72. al Cattani Head 208 230 Volts Table Of Contents RED BLU BLU TO BLU 24V LIGHT Transformer PUMP MOTOR BLU Capacitor SPDT SWITCH Ps 4 5 a Switch RED BED Wo Os C 00 rotecto YEL ES BLK BLK L T HOUR METER Circuit Breakers FUSE PUMP MOTOR 1 300 mA Capacitor SPDT SWITCH gem 58 RED RED GRN YEL BLK BLK BLK 12 Thermal Lo Protector CONTACTOR T2 BLK J P RED TERM BLOCK 7 Circuit 600 30A 11 Breakers PRESSURE GRN YEL SWITCH GRN YEL GRN YEL Common Ground dw uis s Fans Included with Quiet Cover Option Only I Switch H 230 SUPPLY E iConnector BLK GRN YEL RED AA184501 Models P52 P52 V785000 thru V795561 Wiring Diagrams Serial Numbers 0904P520474 thru 0908P520572 D 24 Midmark Corporation 2007 SF 1899 Rev 9 09 PowerAir Oil Less Compressor P52 Twin 208 230 VAC Table Of Contents RED BLU TO eu 24V EIGHT Transformer BLU BLK 0 4 Thermal Switch YEL FUSE 300 mA BLK 5 CONTACTOR RED TERM BLOCK ED 600V 30 GRN YEL Common Ground 230 VAC SUPPLY HOUR METER RED BLK L2 T2 BLK RED L1 i PRESSURE GRN YEL SWITCH
73. alescing Filter Check for Air Leaks Refer to Section B Checking for Leaks ee A 317 e A Change Element Indicator 2nd Refer to Section B Coalescing Filter 3rd Check Solenoid Refer to Section B Solenoid Check Pressure Switch Refer to Section B Pressure Switch 188100 Note More than the 35 duty cycle for Compressors are rated for would be Running too Frequently Compression amp Purge Models A 1 6 Cycle Serial Numbers Midmark Corporation 2007 SF 1899 All Table Of Contents Compression Cycle amp Purge Cycle Problem Excessive Oil Use AEE TE Lubricated Models 151 E Oil Black ReferTo Checking for Leaks Compressor Heads Black oil indicates a worn head Replace compressor head s Refer to Section B Compressor Heads for Leaks ETA Refer to Section B Checking for Leaks Check Ambient Room Temperature Verify temperature of room is not subjected above 100 Fahrenheit Verify Compressor is properly sized Check with Midmark Technical support to verity compressor is undersized for installation Models Compression amp Purge Serial Numbers I Midmark Corporation 2007 5 1899 17 cote Tabie oF
74. ation Midmark warrants to the original purchaser its new ClassicSeries and PowerAir products and components except for components not warranted under Exclusions manufactured by Midmark to be free from defects in material and workmanship under normal use and service Midmark s obligation under this warranty is limited to the repair or replacement at Midmark s option of the parts or the products the defects of which are reported to Midmark within the applicable warranty period and which upon examination by Midmark prove to be defective APPLICABLE WARRANTY PERIOD The applicable warranty period measured from the date of installation for the original user shall be ClassicSeries Lubricated Compressors Two 2 years or 1 500 usage hours whichever comes first PowerAir Oil less Compressors Five 5 years or 3 500 usage hours whichever comes first EXCLUSIONS This warranty does not cover and Midmark shall not be liable for the following 1 repairs and replacements because of misuse abuse negligence alteration accident freight damage or tampering 2 products which are not installed used and properly cleaned as required in the Midmark Installation manual and or maintenance guide for this applicable product 3 products considered to be of a consumable nature 4 accessories or parts not manufactured by Midmark 5 charges by anyone for adjustments repairs replacement parts installation or oth
75. ator with O Rings Not Shown 62988004 s Pipe Hanger 25 e hu 1 Oil Qty Always Specify Model amp Serial Number CL32 Up to July 2008 Models Serial Numbers Up to July 2008 CL52 5 Midmark Corporation 2007 SF 1899 7 28 14 Back Go Table Of Contents 20221000 1 62963203 61900912 9 D 77 d 2 77001391 me 8 NS 62900106 7 7 62945400 9 9 Item Description Gty 20221000 Kit includes items 1 10 Hose x 1 MPT Conn 3 4 1 Operatory High Pressure Hose Assy 1 Adapter Female 1 ID x 1 NPT 1 Exhaust Silencer Rubber Fool cem e Bolt 5 16 18 x 1 2 Elbow 45 Deg Street 1 2 Indicator with O Rings 5 MRP70967 4 62983300 040 0312 00 5 as AA223100 o 2 Always Specify Model amp Serial Number CL21 CL22 CL52 CL32 Built August 2008 Built August 2008 Built August 2008 Built August 2008 Serial Numbers thru Present thru Present thru Present thru Present Models Installation Kit E 6 Midmark Corporation 2007 SF 1899 4 14 J Back To Table Of Contents 20199600 A 77001391 UN 20218500 2 Y 6 002 1804 00 Note
76. aust hose from filter housing assembly or compressor head Step 3 Remove filter and clean with a nonflammable solvent Wipe out housing and allow filter and housing to dry Step 5 Screw onto intake manifold assembly Install exhaust hose onto filter housing Do Not Remove Cap Pop End of Housing off to Access Filter Step 2 Pop off one side of filter housing Step 4 Install filter back into housing Assemble housing Intake Filter 82 88 EI Serial Numbers All All All All Lubricated Heads B 9 Midmark Corporation 2007 SF 1899 Rev 2 08 Ee co To Tabie or contents esting amp Repair Intake Filter Clean Step 1 Firmly grab black boot twist rock and pull outward G2 T AL wj y Step 4 Push boot flange evenly onto _ Step 5 Reinstall boot in compressors head and firmly b press around boot flange to secure in place Step 3 Blow off dust and dirt with a Inta ke Filter Models Cattani Heads Serial Numbers P52 P72 All All B 10 Midmark Corporation 2007 SF 1899 co To Tabie or contents E Testing amp Repair Checking for Leaks Caution Check Step 2 Turn power on Avoid water contact with electrical parts Note Compressor should run quietly and Step 3 Use soapy water to check for compressor storage tank wil
77. cation The capacitor s function is to store electricity or electrical energy The capacitor also functions as a filter passing alternating current AC and blocking direct current DC PowerAir Capacitors are located on Compressor Heads Capacitors ClassicSeries Capacitor Relay Box P52 P72 All Capacitor _ Models Serial Numbers B 20 Midmark Corporation 2007 SF 1899 J Back Go To Table Of Contents Capacitor Step 1 Disconnect power Testing aat Step 2 Access start and run capacitors and disconnect capacitor wiring screwdrivers to two contacts ona Step 3 Discharge capacitors by touching capacitor and to each other 1 Step 4 Set meter to highest Q reading Meter Reading Status Required Action O or Open Reading Replace Capacitor Start Low and Increases Capacitor OK Next Testing amp Repair NOTE The best check is to replace the capacitor with a known good one The replacement capacitor MUST be of the same Mfd and Voltage Ratings or the motor could be damaged NOTE 115V Run Capacitor 40MFD 370v Start Capacitor 430 516MFD 125v 208 230v Run Capacitor 20MFD 440v Start Capacitor 145 174MFD 220v Step 5 Place meter probes on capacitor connectors Reverse the leads this should produce the same reading 190900 Models Seria
78. ck Step 5 Set meter Step 6 Bleed tank pressure down to less than 80 PSI Pressure switch will make an audible click AA185101 Check line voltage across L1 and L2 Check line voltage across T1 and T2 These voltages should be the same Meter Reading Status Required Action Voltage Not Equal Replace Pressure Switch T1 amp T2 Voltage Pressure Switch L1 amp L2 Voltage Models CL21 CL22 CL32 CL52 All Serial 09021210372 09031220296 09011320813 08101520126 785000 d thru Present thru Present thru Present thru Present thru Present Models P21 P22 P32 P52 P72 Pressure Switch Serial 0904P210365 0904P221146 0904P321145 0904P520474 0903P720191 B 4 Numbers wp Present thru Present thru Present thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 10 09 co To Tabie OF Contents Testing amp Repair Pressure Switch continued Refer To Adjustment Note This procedure is only for units with Serial Numbers listed below Function and Location Refer to following pages for other Serial Number listings Testing Access Procedures Wire Diagrams Exploded Views Cut I
79. d with Quiet Cover Option Only e PUMP MOTOR Capacitor Thermal Protector Breakers z GRN YEL 20229700 Models Serial Numbers Wiring Diagrams D 28 P72 V795512 thru Present P72 0909P720228 thru Present Midmark Corporation 2007 SF 1899 9 09 Ec Exploded Views amp Parts Lists PowerAir Click GO TO PAGE button then enter desired page number to view any page in this document XXX XXXX XX Rae wu XXX XXXX XX pM XXX XXXX XX E 1 Midmark Corporation 2006 SF 1899 Go To Table Of Contents IC lassicSeries CL21 ee Ses CL22 ig Emm CL52 Compressor Heads Electrical Control Box Check Valve Manifold Assembly 13 AA195200 Coalescing Filter Assembly E 2 Indicates multiple pages due to a model serial number break for the parts illustration Midmark Corporation 2006 SF 1899 Rev 7 14 Table Of Contents PowerAirs P21 P22 52 72 Installation Kit Electrical Control BOX Coalescing Filter Assembly 195300 Check Valve Manifold Assembly E 13 Indicates multiple pages due to a model serial number break for the parts illustration E 3 Midmark Corporation 2006 SF 1899 Rev 7 14 J Back Table O
80. dware store if needed for service 77002134 15 O Note Elbow was not 62900106 14 7 present on early units E 9 12 MRP70967 Description Qty 20199300 Kit includes items 1 16 e Fresh Air Intake Hose 1 4 ID x 3 8 OD DO Tiftings mi 1 e Drain Hose 16 sold by the inch AR Operatory High Pressure Hose Assy 1 SL Cross 27 iom 2 e Hex Nipple 1 2 NPT x 1 2 4 PVC Pipe 2 SCH 40 6 1 1 PVC Bushing 2 x 1 2 X FPT 5 e Brass Hose Barb 1 2 MPT x 1 4 1 Wall Anchor S 16 x 1 1 4 2 SS 10 Screw 8 x 1 1 2 2 11 Exhaust Silencer 12 Rubber Foot 13 Bolt 5 16 18 x 1 2 22022200020 4 C 2 Gr y e 11 62983300 10 BSW20472 14 Elbow 45 Deg Street 1 2 NPT 1 i P Indicator with O Rings MORIR 15 Indicat th O Ring 1 gt No 4 m mm Qu m Not Shown 62988004 16 Pipe Hanger 27 ote tret 1 Always Specify Model amp Serial Number Models P52 Installation Kit Serial Numbers Up to July 2008 E 9 Midmark Corporation 2007 SF 1899 Rev 4 11 20199400 PS Table Of Contents 65962201 1 77002134 15 9 040 0312 00 13
81. er Replacement Kit e Includes Items 2 and 4 Filter and O ring Kit 77005009 IMG sich 1 e O Ring By itself 10457400 1 Replacement Bowl 1 Replacement Fitting Kit Fitting Filter Bowl 1 e Hex Jam Nut 1 2 20 x 5 16 High 1 e Washer Flat 575 ID x 1 125 OD x 5 1 e O Ring 2 015 Viton V884 75 1 Always Specify Model amp Serial Number Serial Numbers Models All Rev 2 11 13 J Back Table Of Contents 65927500 25 n IS 63882538 gt 20235600 _ Configuration for a Single Head Compressor Refer To Pressure Switch Test Contactor Socket is installed on PowerAi Models Only 62984000 5 64997600 64997700 20210 Configuration Shown for Twin and Triple Head Compressors Description Qty 1 Fuse Holder 2 2 Fuse 1 3 amp 3 Hour PowerAir only 4 Socket with Wire Harness 1 5 Control Box D Single Head Models 1 62970704 b Twin and Triple Head Models 1 6 10 32 nata s 7 T
82. er work performed upon or in connection with such products which is not expressly authorized in writing in advance by Midmark EXCLUSIVE REMEDY Midmark s only obligation under this warranty is the repair or replacement of defective parts Midmark shall not be liable for any direct special indirect incidental exemplary or consequential damages or delay including but not limited to damages for loss of profits or loss of use NO AUTHORIZATION No person or firm is authorized to create for Midmark any other obligation or liability in connection with the products THIS WARRANTY IS MIDMARK S ONLY WARRANTY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED MIDMARK MAKES NO IMPLIED WARRANTIES OF ANY KIND INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS vii Midmark Corporation 2007 SF 1899 Tr Ou b 5 h n g Function System Compression Cycle Purge Cycle Click GO TO PAGE button then enter desired page number to view any page in this document Midmark Corporation 2007 SF 1899 TI ubleshooting Compression Cycle Atmospheric air is drawn in through intake filters to the compressor head s where air is compressed and exhausted Air travels through the pre cooler where it is cooled 10 to 15 F 12 2 to 9 4 Celsius within ambient room temperature Cool air enters the coalescent filter
83. erminal Block 8 62503802 8 Screw Hex Head 8 x 5 8 9 Pressure Switch 10 Screw 48 32 x 5 16 11 9 20233301 12 On Off Switch 62503801 13 Locknut 1 2 14 Contactor Relay Models CL21 CL22 CL32 CL52 i gt Dine Gale ep Serial Numbers 0701L210001 0701L220001 0701L320001 0701L520001 Always Specify Model amp Serial Number i thru 0901L210370 thru 0903L220294 thru 0901L320807 thru 0810CL520124 S P21 0703P210001 thru 0903P210361 P22 0703P220001 thru 0903P221139 P52 0703P210001 thru 0902P520467 P32 0703P210001 thru 0903P321137 P72 0703P210001 Models Serial Numbers thru 0903P720190 Electrical Control Box E 15 Midmark Corporation 2007 SF 1899 Rev 11 25 14 Table Of Contents Configuration for a 1 65927500 Single Head Compressor e 63882538 3 3 20235600 Refer To Pressure Switch Test Contactor 62984000 Socket is installed on PowerAir Models Only a 64997600 b 64997700 015 2029 00 197100 62970705 a 77005143 b 77005144 11 12 13 14 15 20210 Configuration Shown for Twin and Triple Head Compressors
84. ews in through back of back panel gt 2 bh Hemoval Step 4 Remove electrical box cover screws from back panel AA194300 o Hemoval Step 3 Remove back fan cover off back panel Installation Step 2 Install back fan cover onto back panel Sound Cover Electrical Box Cover Models Serial Numbers P52 P72 All All P21 P22 P32 All All All C 6 Midmark Corporation 2007 SF 1899 Exc Serial Numbers EEN Access Procedures Table Of Contents Pressure Switch Cover Refer To Removatv nstallation Exploded Views Part Numbers ClassicSeries Models PowerAir Models Removal Step 1 Disconnect power Removal Step 2 Remove cap nut Pull cover off A198200 Installation Step 1 Place cover on pressure switch Secure cap nut Models Pressure Switch Cover C 7 Midmark Corporation 2007 SF 1899 J Back To Table Contents Wiring Diagrams ClassicSeries Lubricated CL21 CL22 CL32 CL52 Oil Less P21 P22 P32 P52 P72 Click GO TO PAGE button then enter desired page number to view any page in this document Midmark Corporation 2007 SF 1899 Wing Diagrams ClassicSeries Lubricated Compressor Single 115 Volts
85. f Contents 20199000 COCE 8500 PeT80450 13 13 1 77002134 15 62900106 14 e Note Elbow was not OF on early units 9 BMS20900 10 BSW20472 JEU 11 62983300 SS Uu AA196400 Note Refer to Date listed below Must use Kit 20221000 for any Units built August of 2008 to Present Items 4 5 7 8 9 and 10 are only available though Midmark for com pressors under warranty If compres sor is out of warranty these items are available at your local hardware store if needed for service Item Description Qty 20199000 Kit includes items 1 18 1 Fresh Air Intake Hose 1 2 no fittings 1 2 Drain Hose 16 sold by the inch AR 3 e Operatory High Pressure Hose Assy 1 4 SL PVC 2 4 catt 5 e Nipple 1 2 MNPT x 1 4 6 sFilter Assembly Kit PVC B shing 27 29 8 Brass Hose Barb 1 2 MPT x 1 4 1 9 Wall Anchor S 16 x 1 1 4 2 10 Screw T8 x 1 1 27 sse 2 11 Exhaust Silericer ces 1 12 Rubber FOOL 4er nne 4 13 Bolt 5 16 18 x 1 2 4 14 Elbow 45 Deg Street 1 2 NPT 1 15 o ndiCator rtt 1 Not Shown 62988004 16 Pipe Hanger 27 eet 1 17 o m 1 Always Specify Model amp Serial Number CL22 CL2
86. ion C Electrical Box Cover Step 2 Check high voltage on contactor relay Set meter to V Place meter probes on front black and white wires Note Verify reading is 230 volts 230 VAC Primary Transformer Table Of Contents Relay Sj y Access Procedures Wiring Diagrams Exploded Views Step 4 Insert screwdriver into relay to start manually Note if system starts replace contactor relay 230 VAC Secondary RED LOW VOLTAGE WHITE CONTROL BLUE Caution When testing components with power on use care to prevent electrical shock 1 2 A FUSE Step 3 Check Low Voltage from transformer to low voltage wires Place meter probes on Yellow and Red wire contactor connections Note Verify reading is 24 volts Meter Reading Status Required Action High Voltage lt Line Voltage Replace Contactor Relay Low Voltage lt 24 Volts Replace Transformer High Voltage Line Voltage Contactor Relay OK Low Voltage 24 Volts Transformer OK CL21 PR Models 0701L210001 thru 09011210370 P21 Low Voltage Models ozosP210001 B 18 Serial Numbers thru0903P210361
87. l Numbers All B 21 Midmark Corporation 2007 SF 1899 Rev6 10 Tino amp Repair Check Valve Function and Location Table Of Contents The manifold check valve allows pressurized air to flow into the storage tank when the compressors are running The valve closes and does not allow air flow during the purge cycle Remove cap on top of manifold block access the check valve Check Valve B 22 EC Midmark Corporation 2007 SF 1899 Rev 7 14 Models Serial Numbers Refer to Cleaning Exploded views www midmark com File Name Manifold Check Valve Replacement 10541600 Exc co To Tabie OF Contents RH Testing amp Repair Check Valve Step 1 Disconnect power Cleaning Step 2 Remove manifold cap Remove check valve Ces Note Use Ratchet with extension and 3 4 socket to loosen valve Use needle nose pliers to lift check valve out of block Step 3 Blow out valve with air to clean Replace valve if it is sticking AA191200 Serial Numbers Models B 23 Midmark Corporation 2007 SF 1899 EZI co To Tabie or Contos esting amp Repair On Off Switches Referto Testing Function and Location Wire Diagrams The On Off switch send power to the compressor heads Exploded views Each compressor head has an On Off switch amp amp 191900 On Off S
88. l begin to pressurize plumbing joint leaks Check Valve in Closed Position AA190100 Models Serial Numbers All B 11 Midmark Corporation 2007 SF 1899 EZI co To Tabie or contents esting amp Repair Coalescing Filter Function and Location The Coalescing Filter removes water oil and other contaminates from compressed air Coalesced liquids gravitate into the sump bowl where they are discharged through the drain On the ClassicSeries Lubricated models the filter needs replaced biannually or every 350 hrs based on 2000 hour work year times 35 percent duty cycle On the PowerAir Oil Less models the filter needs replaced annually or every 700 hrs based on 2000 hour work year times 35 percent duty cycle All ina Ei Models B 1 2 Coalescing Filter Midmark Corporation 2007 SF 1899 J Back Table Of Contents Solenoid Function and Location During the compression cycle The normally open Solenoid Valve closes preventing the compressed air from being discharged to the drain During the purge cycle Power is removed from the Normally Open Solenoid Valve Opening the valve allowing pressure to be released from the top of the compressor head to the drain It also allows the Purge Tank to release its pressure thru the Desiccant Tank to the drain regenerating the desiccant drying system J
89. m To Number A Power Contactor 62978900 Source BLU B Contactor Fuse 62979000 PUMP MOTOR SPDT SWITCH um Terminal 62979100 Run Winding Switch Block RED RED E m oN sag jacens Contactor 62983700 BLK m E Terminal Contactor 62979200 Block Hour GRN YEL F Meter Contactor 62979300 Cable HOUR METER SPDT G Contactor Switch 62982500 BLU WHT BLK YEL me H Contactor SPDT 62982400 A D Switch CAPACITOR AND RELAY ASSEMBLY SPDT 1 Switch Motor 62982600 PRESSURE C YEL 230VAC Transformer Capacitor TERMINAL BLOCK J Motor and 64884702 RED Relay ORN YEL BLU Pm Terminal Low AC Block Voltage 62983500 Common Ground L Terminal Low 62983600 BLU Block Voltage AA183700 i E Terminal Low M Block Voltage 92293200 Models CL22 Serial Numbers 07011220001 thru 09031220294 D 5 Midmark Corporation 2007 SF 1899 Rev 8 09 Di Go To Tabie OF Contents iring Diagrams ClassicSeries Lubricated Compressor Single 230 Volts RED BLU To 24V LIGHT Transformer RN BLU BLU 0 4 BLU ve SOLENOID 230V HOUR METER FUSE 300 mA SPDT SWITCH Tu MOTOR RED RED Run Winding gt BLK BLK BLK 12 m stat CONTACTOR T2 BLK i 2 y TERM BLOCK RED T1 RED 600V 30A RED 11 GRNVEL t RED BLK YEL PRESSURE e SWITCH GRN YEL GRN YEL I Common Ground CAP 2 5 CA
90. n Adjustment Step 1 Run compressor until pressure reaches 100 Ibs Note Compressor should shut off close to 100 Ibs Cut In Adjuster 185200 Step 2 If compressor didn t shut down at 100 Ibs turn nut on adjuster to reset gauge Clockwise will increase reading Counter Clockwise will decrease reading Models CL21 CL22 CL32 CL52 07011210001 07011220001 07011320001 07011520001 E thru 09011210370 thru 0903L220294 thru 09011320807 thru 0810CL520124 Models P21 P22 P32 P52 P72 02032210801 0703P220001 0703P210001 0703P210001 0703P210001 Pressure Switch Serial Numbers thru 0903P210361 thru 0903P221139 1 thru 0903P321137 thru 0902P520467 thru 0903 720190 B 5 Midmark Corporation 2007 SF 1899 Rev 8 09 co To Tabie or contents esting amp Repair Pressure Switch continued Refer To Adjustment Note This procedure is only for units with Serial Numbers listed below Function and Location Refer to following pages for other Serial Number listings Testing Access Procedures Wire Diagrams Cut In Adjustment Exploded Views Step 1 Runcompressor until pressure reaches 100 Ibs Note Compressor should shut off close to 100 Ibs Cut In Adjuster
91. odels B 32 Serial Numbers Midmark Corporation 2007 SF 1899 J Back To Table Contents Compressor Heads Testing amp Repair Referto Wiring Diagrams Exploded views Function and Location Atmospheric air is drawn in through intake filters to the compressor head s where air is compressed and exhausted to the reservoir tank Heat is generated from the compression process A ARACO 225 A Oil Less P52 amp P72 Replacement 10485200 Reed Valve Replacment 10499600 AA192600 o All All B 33 Midmark Corporation 2007 SF 1899 Models Serial Numbers EZ co To Tabie or Contents esting amp Repair Compressor Heads Check Thermal Overload Button To reset compressor head A Allow motor to cool B Press thermal overload reset button Note If motor does not start replace compressor heads Compressor Head Models Serial Numbers P52 P72 All All B 34 Midmark Corporation 2007 SF 1899 mE co To Tabie OF Contents Testing amp Repair Purge Valve Referto Location and Function The purge valve requlates the flow of purged discharged air from the purge tank to the desiccant tank Exploded views AA194400 Models Serial Numbers All Purge Valve B 35 Midmark Corporation 2007 SF 1899 Ee co To Tabie or contents esting amp Repai
92. on 2007 SF 1899 Rev 9 09 Table Of Contents Wiring Diagrams KH ClassicSeries Lubricated Compressor Wire Part Triple m 230 Vo Its Harness From To Number A rower Contactor 62978900 Source B Contactor Fuse 62979000 PUMP MOTOR SPDT SWITCH Run Winding T RED ressure ermina Switch Block 62373100 fk p Pressure Contactor 62983700 SOLENOID Switch BLK SPDT SWITCH Run Winding Te rminal RE E Contactor 62979200 BLK am Block T Hour BLU amc G Meter Contactor 62979300 BLK SPDT SWITCH Run Windi __ RED inding SPDT CONTACTOR RED Sat G Contactor Switch 62982500 BLK BLK 2 22 5 SPDT BLK CAPACITOR AND RELAY ASSEMBLY H Contactor Switch 62982400 E 2 F J A Aul la HOUR METER oer Switch Motor 62982600 D o 4 CAPACITOR AND RELAY ASSEMBLY J Motor 1 and 64884702 ve Relay 230VAC Transformer TERMINAL BOCK RED K Motor2 SPDT 62982700 e BLU Switch m WHT m N L Motor3 62982800 Switch E AA183900 Terminal L ermina OW M Block Voltage 62999500 Terminal Low n Block Voltage 62983600 Terminal Low 9 Block Voltage 62983400 Models CL52 Serial Numbers 0701L520001 thru 0810CL52
93. ose 2 Elbow 5 8 18 x 3 8 3 Bushing 9 x 1 4 5 inca trie 4 MPTEL 1 2 CA x 3 8 esses 5 Manifold Clamp 6 7 8 9 C 62903606 14 C 62900712 ON 65970505 Pre Cooler Tube Purge Valve Elbow 7 16 20 x 1 4 Hose Assembly 1 4 16 L 10 Assembly 3 8 16 L 11 Street Elbow 3 8 12 Hose Assembly 1 4 161 13 Street Elbow 1 4 with Sealant 14 Bushing 1 2 MNPT x 1 4 Seal 1 15 Nipple 3 8 NPT x 1 1 2 Brass 16 A AnchorBulkhead 17 MPT ST 1 2 CA x 3 8 C 65970702 18 Elbow 1 2 Hose Con x 3 8 19 Reducer 3 8 1 4 C 65970702 10 20 1 4 2 21 Pop Rivet 150 x 860 1 22 Hose Assembly 3 8 NPT 16 L 1 Always Specify Model amp Serial Number 2 CL22 CL21 CL21 Pneumatic Tubes See 0701L220001 185008 and Hoses thru Present thru Present thru Present 1 6 Midmark Corporation 2007 SF 1899 Rev 7 14 Exc co To Tabie or Contents 06 80450 11 550920 lt d 0450 04 N 6290
94. r Purge Valve Check Step 1 Disconnect power FH e o Step 2 Remove air line tubing from purge valve Disconnect purge valve from purge tank fitting AA194500 Step 3 Blow out valve with air to clean Replace valve if it is sticking Purge Valve _ Models B 3 6 Serial Numbers Midmark Corporation 2007 SF 1899 Ea GoTo Tabie OF Contents zd Testing amp Repair Thermal Overload Switch Location and Function PowerAir compressors motors are thermally protected also the control circuit contains an automatic reset which shuts motors down if the ambient temperature becomes too high The switch is located on the saddle behind and below the compressor heads 194000 Next Referto Testing Wiring Diagrams Exploded views Thermal Overload Switch WARNING Compressor motors are thermally protected with automatic reset and may restart without warning Thermal Overload Models P21 P22 P32 P52 P72 Serial Numbers All All All All All Switch B 3 7 Midmark Corporation 2007 SF 1899 coo Tele oF contents esting amp Repair Thermal Overload Switch Refer to Testi WARNING Access Procedures esting A Compressor motors are thermally protected with Wiring Diagrams automatic reset and may restart without warning Step 1
95. sor runs to Frequently Is Compressor running too frequently W E ft t ug ou un Check Desiccant Drying Chamber Refer to Section Desiccant Tank r Purge System za Purge system by pulling open Perform Unloading System Function Test AS Refer to Section Solenoid ow E the pressure relief valve Note Under normal operation conditions a small amount of moisture with some oil may be under the unloader exhaust muffler This is not a malfunction It is evidence that the E EOS Check for Condensation in Air Lines 7 v filter on the Desiccant Drying System captured the moisture and did not permit it ma Is there moisture in operatory air to enter the operatory air supply Compression amp Purge Cycle Midmark Corporation 2007 SF 1899 Models Serial Numbers 11 Es a Table Of Contents roubleshootin g Compression Cycle amp Purge Cycle continued Refer To G age Problem Element Indicator is Red Intake Filter Coalescing Filter Change Intake Filter Refer to Section B Intake Filter Note Intake filters on earlier versions are mounted a T manifold E LELEL agati Sr tenes Change Coalescing Filter Refer to Section B Coalescing Filter Compression amp Purge
96. ssor head s and the solenoid purge valve A mechanical valve on the pressure switch opens up to unload the compressor headlines At the same time the solenoid opens starting the purge cycle Cut In Cut Out time Cut In Cut Out is the minimum and maximum discharge pressures at which the compressor will switch from unload to load operation cut in or from load to unload cut out The pressure switch controls Cut In Cut Out times B 2 Midmark Corporation 2007 SF 1899 Table Of Contents Pressure Switch continued Testing Note This procedure is only for units with Serial Numbers listed below Refer to following pages for other Serial Number listings Refer to Section B Pressure Switch Adjustment C 1 Perform Adjustment Step 2 Turn power off If there are replace pressure switch Step 3 Remove pressure switch cover and verify there are no black burnt melted wires Refer to Section C Pressure Switch Cover Step 4 Turn power on Caution When testing components with power on use care to prevent electrical shock Step 5 Set meter to V Meter Reading Status Required Action No Pressure on Gauge 185100 Less than 24 Volts Reading Replace Pressure Switch 24 Volt Reading Pressure Switch OK CL52 0701L520001 thru 0810CL520124 P52 0703P210001 thru 0902P520467 CL21 CL22 0701L210001 0701
97. ted Compressor Head a 115 Volt Model 1 b 208 230 Volt Models es tek sat haces D EA MIRI EE 1 CESAR 2 7700007 MES 3 2 Capacitor Relay Box a 115 Volt Model E21 saath 1 b 208 230 Volt Models lt AA198300 S ERA ETEA T 1 2 2 3 3 Mounting Kit Includes 4 Mounts 1 a 77001345 4 Site Gauge b 77001346 5 Oil Fill Cap 6 Gasket EEEE Always Specify Model amp Serial Number Models CL21 CL22 CL32 CL52 All CLxx Models Compressor Head Serial Numbers 07011210001 07011220001 0701L320001 0701L520001 785000 E 25 i thru Present thru Present thru Present thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 1 23 12 EN To Table Of Contents IMPORTANT o REMOVE PLASTIC PLUG 4 10475800 MT E 65969900 CAUTION CHECK OIL LEVEL 77009181 65972700 __ 65949000 EX LTA ESV 15V 62970501 30V 62970502 Models CL 63946900 P 63947000 Description Qty f Models 1 Check Valve Location Label 1 C L21 62984100 2 Serial
98. ted Models Only Check Start Relay Motor may hum but not Start Tap capacitor box lightly If unit starts relay is sticking and needs replaced Check Relay for continuity Refer to Section B Start Relay Refer to Section B Capacit Check Low Voltage Refer to Section B Low Voltage Check voltage at Breaker Was proper voltage is measured at the breaker and not at motor terminals If yes check the in the following order eCheck for broken or loose wires elf there is Pressure Perform Pressure Switch Adjustment Refer to B Pressure Switch eCheck voltage at On Off Switch Refer to B On Off Switch ompression Cycle Models comp ey Serial Numbers Midmark Corporation 2007 SF 1899 Rev3 09 151600 6 Table Of Contents Compression Cycle amp Purge Cycle Problem Motor runs Intermittently or Chugs ClassicSeries Lubricated Models Start Relay Capacitor Solenoid p Check Voltage in Breaker Note If circuit breaker is tripped measure voltage at the line side of the vacuum switch while the unit is running Voltage should be in the range of 208 230 for 230 volt units and 108 132 for 120 volt units Voltage outside this range may result in failure to start and possible damage to unit Install a HE buck boost transformer as required MEC Check Valve Check Low
99. thru Present thru Present Models Serial Numbers P21 0904 210365 thru Present P52 0904 520474 thru Present P72 0903P720191 thru Present P32 0904P321145 thru Present 0904P221146 thru Present P22 B 15 Midmark Corporation 2007 SF 1899 Rev 10 09 EZ co To Tabie or Contents esting amp Repair Desiccant Tank Function and Location Moisture vapor drying takes place as the air is directed through the silica and alumina gel desiccant material from bottom to top in the drying chamber of the desiccant tank When the desiccant becomes so saturated with water and oil that the purge cycle fails to regenerate it the desiccant tank will need to be replaced All Desiccant Tank Models B 1 6 Serial Numbers Midmark Corporation 2007 SF 1899 Rev9 07 Exc J Next Testing amp Repair Table Of Contents Low Voltage Master Control Panel Testing The Master Control Panel will allow the user to control Exploded Views the dental equipment from the office area Supplies power to the relay switch Note Relay Switch is always live unless Low Voltage is turned off AA195600 Models Serial Numbers All B 17 Midmark Corporation 2007 SF 1899 Tino amp Repair Low Voltage Control Circuit Step 1 Remove electrical box cover Testing Check for broken or loose wiring Refer to Sect
100. to July 2008 sns E 7 Midmark Corporation 2007 SF 1899 Rev7 28 14 Table Of Contents 20220900 A 4 O g 0 2 77001391 77002134 8 62900106 9 Cb amp 62945400 CO el Description Qty 9 220220900 Kit includes items 1 9 1 Hose x 1 MPT Conn 3 4 1 2 Operatory High Pressure Hose Assy 1 9 3 Adapter Female 1 ID x 1 NPT 1 4 Exhaust Silencer s a 5 Rubber Foot 6 Bolt 5 16 18 x 1 2 7 Elbow 45 Deg Street 1 2 1 8 Indicator with O Rings 1 9 3 4 Hose x 1 MPT 1 AA223200 Always Specify Model amp Serial Number Models P21 P22 P32 Installation Kit Built August 2008 Built August 2008 Built August 2008 E 8 Serial Numbers thru Present thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 4 11 J Back Table Of Contents 20199300 77001391 Note Refer to Date listed below Must use Kit 20220800 for any Units built August of 2008 to Present 20218500 2 65962201 1 4 50720 Items 4 5 7 8 9 10 are only available though Midmark for compressors under warranty If compres sor is out of warranty these items are available at your local har
101. ts RED BLU BLU BLU Toe HT 24V LIGHT Transformer SOLENOID 230V BLU SPDT SWITCH nen BLK 0 4 Thermal RED RED A Switch BLK YEL BLK PUMP MOTOR HOUR METER FUSE 300 mA GRN YEL SPDT SWITCH RED BLK BLK BLK 12 CAPACITOR BLK BLK CONTACTOR T2 TERM BLOCK RED Ti l RED 30A m RED L1 PUMP MOTOR PRESSURE GRN YEL SWITCH GRNIYEL GRN YEL Common Ground o Fans Included with Quiet Cover Option Only Thermal Switch 230 SUPPLY L _ Du 4 Connector 184201 BLK GRN YEL RED 7 Serial Numbers 0904P221146 thru 0908P221308 V785000 thru V795263 D 18 Midmark Corporation 2007 SF 1899 9 09 PowerAir Oil Less Compressor P22 Twin 208 230 VAC Table Of Contents RED BLU GRN BLU k BLU 24V LIGHT Transformer SOLENOID 230V BLU SPDT SWITCH 230 Thermal RED RED Switch YEL BLK PUMP MOTOR HOUR METER FUSE 300 mA GRN YEL SPDT SWITCH i RED RED BLK BLK BLK 12 NTA BLK BLK T2 TERM BLOCK RED T1 RED ov 30A PUMP MOTOR PRESSURE GRN YEL SWITCH GRN YEL GRN YEL Common Ground t Fans Included with Quiet Cover Option Only Thermal
102. ust Clockwise will increase reading Clockwise will increase reading eCounter Clockwise will decrease reading Clockwise will decieace NOTE Pressure Switches on models up to 2 HP have a Preset Cut In adjuster Models 2HP and over have Manual adjuster for Cut In setting Both Models have Manual Cut Out Adjusters P72 P72 0903 720191 785000 P72 Pressure Switch thru Present thru Present Midmark Corporation 2007 SF 1899 Rev 3 28 14 B 7 Serial Numbers Models 9 amp D CO AS Clean and Lubricated Heads Clean Cattani B Intake Filters AA192900 2 5 o o lt wn 5 5 22 96 25 EE 5 Earlier Versions Intake Filter Intake Filters Function and Location Atmospheric air is drawn in through intake filters before flowing to the compressor heads Intake filter protect the heads from dust and debris and should be changed annually esting amp Repair B 8 Rev 2 08 Midmark Corporation 2007 SF 1899 Back Table Of Contents Testing amp Repair Intake Filter Clean Unscrew intake filter from intake manifold Step 1 Remove exh
103. ways Specify Model amp Serial Number Models P21 P22 P32 Compressor Heads Serial NB 0703P210001 0703P220001 0703P320001 E 23 thru Present thru Present thru Present P21 P22 P32 V785000 thru Present Midmark Corporation2007 SF 1899 Rev 8 30 13 EN To Table Of Contents 77001562 77001448 014 0736 00 77001541 on 62400302 3 62600207 e 95 62600117 77001546 Description Qty 198100 1 Circuit Breaker 11 1 2 HexNut M8 x 1 1 4 3 per Head 3 Lock Washer 5 16 3 per Head 4 Flat Washer 5 16 3 per Head 77001344 5 Mounts pkg of 3 1 per head 6 Compressor Head 52 P72 7 Intake Air Filter 2 Per Head 8 Start Capacitor 1 Per Head 9 Air Intake Nipple 2 Per Head Not Shown 10 77001450 Reed Valve Kit eThin Teflon Gasket Valve Plate Assembly eThick Teflon Gasket Spacer Plate eSmall O Ring Always Specify Model amp Serial Number 2 P52 P72 P72 ser Models 0701520001 0701P720001 V785000 Compressor Head thru Present thru Present E 24 Midmark Corporation 2007 SF 1899 Rev 4 5 13 J Back To Table Of Contents a 77001366 b 77001367 Description Qty 1 Lubrica
104. witch B 24 EL Midmark Corporation 2007 SF 1899 Exc To Table Of Contents On Off Switch Step 2 Set meter eX Testing Step 1 Remove electrical box cover Refer to Section C Electrical Box Testing amp Repair Referto Access Procedures sec C 1 Wire Diagrams Caution When testing components with power on use care to prevent electrical shock Step 3 Turn switch on NOTE If all connections on top but one are reading correct voltage when there is multiple switches check jumper wire connections Meter Reading Status Required Action 230 Volt Models lt 230 Volts Replace 115 Volt Models lt 115 Volts On Off Switch 230 Volt Models 230 Volts 115 Volt Models 115 Volts On Off Switch OK Step 5 Place meter probes bottom right and bottom left side Step 6 Turn switch ot AA191300 Models All Serial Numbers B 25 Midmark Corporation 2007 SF 1899 EZ co To Tabie or contents esting amp Repair Fuse Refer to Function and Location Exploded Views The fuse protects the low voltage control system against overload failure mainly short circuits It is located in the electrical box and accessed on top of the electrical box All B 2 6 Serial Numbers Midmark Corporation
105. xhaust Muffler It also allows the Purge Tank to release its pressure thru the Desiccant Tank to the Exhaust Muffler As long as the Wall On Off Switch is On itis providing power to one side of the Pressure Switch Ing Referto Table Of Contents Troubleshoot Wire Diagrams Solenoid Valve Normally Open when not energized NOT ENERGIZED OPEN Unit On Off Switch Contactor LINE 24 VAC Coil 24 eci Compressor OPEN eh OFF Lt HOUR METER OPEN At or above Pressure Setting Pressure Power Source Fuse Switch Wall TERMINAL 24 VAC On Off BLOCK x Transformer Low Voltage Swich ENERGIZED A NEN 5 hs o Q A Common Ground AA185000 Eariler Low Voltage Single Head Unit Shown Note The compression and purge cycles will continue as the pressure inside the system fluctuates between the 80 PSI and 100 PSI pressure settings Models Serial Numbers All Purge Cycle A 5 Midmark Corporation 2007 SF 1899 Rev3 09 i roubleshooting ReferTo Problem Compressor will not Start Pressure Switch ON OFF Switch 5th Capacitor Overload Cut Compression Cycle Compressor Heads Allow compressor to cool then restart Motor Compressor Frozen 5 v Refer to Section B Compressor Heads E Check Capacitor or Lubrica
106. y Start Relay rehenes B 28 Compressor Heads Listed by Model CL21 CL22 CL32 CL52 CL72 B 30 P21 P293 B 32 52 72 33 Purge Valve 35 Oil Less Only Thermal Overload Switch B 37 Oil Less with Quiet Cover Only arcas 39 Section Section ca ACCESS PROCEDURES lick Check Valve C 2 Electrical Box Cover C 3 desired page number Only Models CL21 CL22 CL32 to view any page in this CL52 document Capacitor Relay Box C 4 Compressor Head Electrical Cover C 5 Only Models P21 P22 P32 P52 P72 Sound Cover Electrical Box accessory C 6 WIRING DIAGRAMS ClassicSeries Models Lubricated B N D 2 T A D 5 M 8 D 11 PowerAir Models Oil Less D 14 22 17 2 e D 20 52 23 26 EXPLODED VIEWS PARTS LISTS ClassicSeries Models Lubricated CL21 CL22 CL32 CL52 E 2 PowerAir Models Oil Less P21 P22 P32 P52 P72 E 3 Indicates multiple pages due to model serial number break s Ea Table Of Contents Symbols

10540900 - Midmark Air Compressor Service Manual

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