SERVICE MANUAL & PARTS LIST
Contents
1. ITEM e 4 21304 CO AU m n STA APH Stosa a sum ej WASHER NT SAR SEE ENSTO WASHER FLAT STS GUARD FA em E i TERM MALE 280 03 6 ANO BLUE aen m FOAM MOTOR COVER FRONT AE ET i y MOTOR COVER TOP AU i BOLT Sms HOOK NOLES SZA D fac 5 EJ TER NUR TO cj 9 WIRE FT STOGI D n EJ GUM HOSE SUPPER Stos 5 es at i 5 12003 GRY URE Tm HOSE BAB X RPT DES ELBOW 1 3800 x 2480 GRY POLY DUET ZE TRET 9 LAMP HOSE UPPER 26 204 ETT cj HOSE SARS APT O ELO at El FEIER MOTOR VENTURI ADU CE i SINGLE SUGE a i Fh BARS MODE Emmi i FIN BAR AFP ST Tes 1 TEMA E Stor ri WRAP MOUNT SX WEH AC mos E PU AGU DOM VOCE AUS AO 1 SPA 420 X Store WASHER COUNTERSUNI Era WASHER USS STS _ mer FOOT BUMPER CNE STOCK ons 4 MOUNT RUBBER VAMO 20 STUD AND HOLE Tr i MOTGRANE SY WUGHT AO JESUS i FOOTSWICH DEF ae em i FIND SLEEVE CU CAR BSOS LT SYRINGE WATA WATER SUPPLED WRO TUBO Tm i TUBA POL CoL SING GRY Er i2. 73 ra CLAMP CALE ON EE AW 209 BTO POLE WHE 3 HEAT SARI U YELOW STO rz a E WIRE ORTO _ 10022703 ESTO sra 3on WE 9 STOCK ros HENS LOQGPL PR rad 1 z SCORE 26X00 7 DURO GE Emi aR WIRE ET RED 10022702 STOR roi aun E vw TERA Loose 2739 BNET El 5 ZP n oi GRY LASTIC Ho STAT 3 i WEE ASY AU SWITCH SCALE WITA FIBER CERES sra i E RES POT UN TERA gan ART OF SC 0 SCALER ASS ste i WASHER YL TOO str 3 VALE NEEDLE CONTROL mo ice Emi 2 E FM ELO 01032 WHITE HALON Em i VALVE a WAY SOLENOD 20 Emi i WS SIS FAA 40 ONTOS FUT URDERDUT ALE TOGGLE ZW GRY WO EX Tee ASS SYSTE Ex i MS SIS stoso ASSEMBLY SYSTEM Em i PLATE AE ur SCALE i GROMIET NEOPRENE BETO rts 1 pa RES POT LINEAR WSIE e i WIRE aso PER OPTICS sro i ra PER OPTIC EL sy Em i Pb ASSY AEU 25 AER PIE BOARD Emi i ra THLE 2 WAY NORMALLY CLOSED 2C 7 3 CABLE ASY MOTOR GONNA FRE sra i r3 WIRE MOTOR CONTROL 773 i 17 ITEM PART NO e zur iun ra SICH COVER PROTECTION CAP 773 i w SICH ROCKER BL PLUG RR UL Eri i
3. Fin ELA UNCLE gt FARO vis DEL TEE 3 TUBO PY SCO BLU GRSTOOR aa 55 Page 19 E TIOS STS BETO is TIOS SS 38 HEAT SHAN BL TANE DT STO DOE GEN PURE SET WO _ naar BOCA TERM RING 62240 WE OFT VEL 1H 227904 TOCA WE PVC FT GRY STOCK jo ejojejejejejejejejejejejojejojejoejejojejopje o ojeje ejoje ejojejejejejejerjeje El Page 15 ITEM DESC PART NO VALVE CHECK AR ANT RETRACTINAEU 25 roda REGULATOR E VA E TOGGLE GRY WER Ema GAST FOR us Born Emi AP AR BOTTLE UNER ABU aem Hasen EOTRE den E 73 ra Em 5 WATERGAUGE MEL 2 ner E BRACKET WATER E PITT BEZEL LED Y CHE PCE UK STOGI sa E FOLDER VIS UNNERSALORY p HOLDER ELCTRI AUTOMATIC Wi LOCKE TOGGLE GRAY ET OLDER ATO W OCKOWTHECE GRY p 5 HOLDER BR 120 GUND GRY pr E Ws SIS POP _ RTC store y CHASSIS EL E TRANSPORT DENTAL Er HEAT _ TABLE ion sur y CABLE CORD PB SIMAO sra
4. Salva and High Volume Waste Container FLOAT SENSOR CONNECTOR PN 860080 Disassemble Float Sensor Connectors by trimming back heat shrink and cutting wires to Connectors see new a Fig 23a Remove mus that hold Connectors to Plumbing Chasis reassemble Float Sensor Connector through Plumbing Chassis Apply to Connector to avoid leakage Side sleving over wires Attach nu to Sensor SYRINGE PN Unscrew handle from Syringe head see Fig 22 I Remove tube clamps and tubes from tings on Springe p nd EA Reassemble by placing tube through handle and plac ing tube clamps om tube water tube designated WASTE CONTAINER FLOAT SENSOR PN by ribbed ies onside of tube tothe waterside Water 730514 side is indicated by water symbol on head Attach han Remove nut se Fig 239 Cut wires and remove dle to Springe head and test for water and spray Sensor To reassemble esolder new Sensor wie and apply beat shrink Reatach nut DESCRIP FIN CLEAR SLEEVE STOCK TERM Few 20 YE ANG STOCK El Page 11 DESCRIPTION PART NO
5. Modules ie OPTICAL HANDPIECE LIGHT BOARD PN 33040 Remove cable connector on Board sce Fig 7 Remove screws and washers with 1 16 Allen wrench Reussemble in reverso order t POWER DISPLAY BOARD PN 330550 Remove the Cable Connector from Optical Handpiece Board Fig 7 Remove Board mounting scews and washers with 1 16 Allen wrench Remove Optical Handpiece Board and place to the sido Remove remaining Cable Connectors from Power Display Board cable going through the holders Leave other cabe is in This wil make reassembly jer Remove the four standofk on Board wit 1 4 sock et Remove four cap screws and washers with 1 16 Allen wrench Remove the four cap screws and washers n transformer with 582 Allen wrench Remove Board from chasis Reassembly is done in reverse order Ensure that spac eis are present on 4 standoff prior to installing Board Reconnect connectors Install 1 16 able is approximately where previous installed POWER SWITCH PN 830018 Remove wire terminal from Switch see Figs a amp 8b Pres tabs in on Switch and remove Switch Remove over and place on new Switch Place new Switch ino chassis with circle on toggle to the OFF side Reassemble wires with white to white and black to black Figur SECONDARY FUSE HOLDERS PN 8300 2097 Desolder wires from Holder see Fig 9 Remove Holder with 9 16 open end wrench Take
6. are used on front side while flat washers are added on back side only Attach now rubber feet Attach ground wire to Motor Solder and heatsink wies Note that yellow goes ta orange and to brown wires are attached to black and red wires with blue bands Use wie tie o atach wies to mount Assemble Motor Cover and Filter as described previously in FAN section Lay unit its back and remove all containers Fig 18 Remove the three Plumbing Chasis mounting crows and washers with 2 Philip head screwdriver Carefully loser Plumbing Chasis from top of Case and tum overt expose Chassis components se Fi 18 CAPACITOR Part of Compressor Motor Asy DDe older wires from Capacitor ce Fi 18 Remove tube from Fir to Flow Block Remove Capacitor mounting aut with 11 32 socket Resssemble inthe revere order Re solder wires to Capacitor terminals wires have no orientaon and beat shrink Heat shrink and sca with RTV rear ter minas on Capacitor Replace tube en Flow Block FLOW BLOCK PN 460546 Remote tubes from Flow Block se Fig 18 Not Removal of tubes is ested slightly with heat shrink gu Remove Block mounting screw on bottom of Plumbing Chassis with 1 16 Alen wrench Reassembly s done in the reverse orde Remove ft tings from old Block and attach to new Block Note at ribbed line coming from Syringe is designated for water Attach this ine to water iting on Block which s I
7. once the is presur acd When ever the compresor motor is on the high vacuum tube willbe on Sling ofthe compresor on the vacuum side i prevented by sing a vacinm pump plumbed ta the input und the outpat ofthe bead to create higher vacuum by using the outlet to draw more thru the inlet and creating an open head to Present vacuum lock The high vacuum is electrically fied to the compressor thr the relay 1 the sytem i pressurized and the high vacuum hose is removed from he holder and the toggle the holder is in the ON Postion the compresor wil tur on and air from the Pressure side will vent to he atmosphere The salva Sector works from the pressure sido of the compresor thr an ar toggle switch with the red dot Fig 1 andan si plot and vacuum pump When the sl ejector s Tenovcd from i s holder with the toggle on the holder n ON position the ar ptis activated allowing air 15 low to the vacuum pump When the saliva ejector s the pressure gauge wil asthe pressure ops unt the pressure sensor tras the compressor on and reaches a pressure of 0 PSL the high vacuum i fn at the same time the compresor motor will run continvowsly and the cling ofthe pressure side will mot be s audi To check the stem verify that unit holds pressure on the pressure gauge and hat the pressure toggle switch is in the ON postion Note that when tbe unit i fist turned on he uit wil charge two three mcs b
8. ra Fuse LOLO SPACER FUSE FT HEAT suk anek TLE OD ESTOS Dm 5 te TERM CAMP TEE PLT LOOSE STO 73 E LOOKS PA NSTOCO soi use HOLDER Damm PMA MATO e SAFE 73 2 ra Pos 0 19 POWER MET WSE WOLDRZPOLE UNE FLTERED 770 i PB SY AEG PONERCONIROL 73 i y WASHER FLAT ILO ODRZ sion a 5000 SAM sociam ra WAKE SPT STS 0 LOOK ESTO sts SPACER o SZWED EX FEN STO sto SPACER IN sta 3 POWER BOAR FT i 5 VERA ABU CONTROL PANE i WINDOW GBNACETAIE ABIT E73 i ra CHASSIS AE 25 ELECTRONG CUPL TRANSPORT O GENIAL E i 19 DESCRI lejejciejetejeje AEU 425CFH SYSTEM ONLY fe Following Rem Page 21 ABU 425CF CFH SPECIFICATIONS AEU 425CHJCFH Transport MDS Sie JS x 145 x24 Temx36cmx61 Volume 181 cu ft 005m Weight 465 bs 209 kg Power Source AC Dual Voltage Auto Switching 120 V 60 Hz or 230 V 50 Hz 60 Ha Power Inner 26 VDCto 120V AC Power Rating wow Operating Pressure 45 SOPSI Constant Air Flow Pres 40 PSL 04 SCFM 275 kPa 112 termin High Volume Vacuum 335CFM A0 Hg 75 Low Volume Vacuum 13 SCEM 15 Hg 167 termin Air R
9. SERVICE MANUAL amp PARTS LIST AEU 425CF AEU 425CFH TABLE OF CONTENTS General Serie Information Inspection amp Verification Cleaning amp Labrcatin let Module Handpiece Light Board Power Display Board Power Sich Secondary Ps Hoden Poser Cord Receptacle Vas Needle Vales Foot Sitch Receptacle wor Solenoid Toggle Sich Seler Tbe and Handpiece Seler Potentiometer Seer Module Three Way Solenoid and Conpresor Cover Compressor Motor Capacitor How Block Sage Ale Fer Three Way Al Solenoid Ais lot Vale Salva Pump Sensor Weste Container Modules Box 1548 Wodzie WA 80721540 mail infarct com Internet wrati con 10 21 GENERAL SERVICE INFORMATION service and parte manual offers information and parts lists not available in the AEU A25CF CFH Operation and Maintenance Instruction Manual il help you beter understand bow the AEU 2SCEJCFH Transport MDS portable dental system works thereby reducing service time Pars drawings ports Photographs and schematic diagrams show compo Dents in their actual places inthe relativ to onc another A plumbing schematic is provided with water lines indicated in blue Plumbing parts are called out by Aceptico part number in the assembly drawings Am cca schematic i provided with wies color coded Electrical part arc called out by Aseptco number n he assembly drawings Par
10. Spacer and place on new Holder and replace Holder Re solder and heat shrink wires on Holder we other Holder as reference Ensure that suficient gap between power Sommestor and Holder terminal is maintained to vent arcing Place one 0 63 Amp fue in each Holder POWER CORD RECEPTACLE PN 840067 Remove wires from Power Switch ce ig 9 Remove ground fom ground terminal with 516 socket Remote meccpacie from chasis with 1 Philip head Re asembly is done inthe reverse order Connect wires to the power sich white to white und black to black DISASSEMBLY conta TOGGLE VALVES PN 730010 Qty 3 There are three Toggle Valves on Electronics Module 1 Scaler Coolant Switch 2 Handpiece Coolant Stitch and 3 Handpiece Coolant Air Switch three Valves can be bed in a similar fashion Remote tubes from Valve ee Fig 10 Loose internal mut with 9 16 thin borend wrench outer nut can be removed by hand Note orientation of Vale Remove outer nut and Valve Remove fitings and stach to new Valve Resssemble with orientation a before Loosen inner so that outer nut can be brought to the chamfer Use 916 open end wrench on upper body and tighten internal nut with 9 16 thin open end wrench This will avoid damage tothe outer surface NEEDLE VALVES PN 730066 Qu 2 There are two Necdle Vales on Electronics 1 Scaler Coolant Adjust Valve an
11. and remove ground wire at Motor Remove Cover from Case Note orientation of Fin Remove Fan fasteners with 1 Philipehcad scrondrver and 5 16 socket Reassemble in the reverse order Take care when rein stalling Cover that tubing from Compresor is not COMPRESSOR MOTOR PN 730503 Remote Filter and Compresor Cover previously described in FAN DISASSEMBLY Remove rubber eet on bottom of unit eae to expose screws ce Fig 17 Remove the four mounting screws with 3 Philips head scemuriver Remove cable holding down wires Motor Remove ground wire with 2 screwdrver Cut wires at heatsink to Motor Lift Motor 0 and remove pressure tube by removing clamp Note Clamp can be removed by sliding tabs says Removal of Tube is easier if heated slightly with heatsink gun Lift Motor from Case Note orientation offitngs Most iubes can be left attached not damaged Remove Venturi rom large tube in center of Motor by palling on Venturi Use adjustable 6 wrench to remove iting and place in new Motor Push Venturi back int large tube In middle of Motor Remove fect and attach in same orientation on new Motor Reassembly is donc inthe revers order Position Motor in Case Ensure that tubing is not Kinked Reatach pressure hose with clamp us to tighten camp Align Motor and mount to bottom of Case with screws and countersunk nylon washers Note to level unit Screws and nylon washers
12. connector back in same orientation as before Place waterline to barb closest to Gra Yel ground wire Insert Solenoid tires into connector Ensure that terminals are firmly Connector Re atach hardware and connector Ensure that al ground terminals are reinstalled Figure i 7 TWO WAY SOLENOID PN 730169 Qt 2 There are two Two Way Solenoids on the Electronics Module 1 Water On Off to Motor and Sale and 2 Air On Off to Motor Both Valves can be disassembled ina similar fashion The two Two Way Solenoids are the two valves with blue wires se Fig Remove tubing from Solenoid Remove Motor Cable Connector from Power Display Board Remove two blue wires from Connector going to the Solenoid Remove Solenoid button head screws vith 16 allen wrench Remove fiting from Solenoid nd pace on new Solenoid Re asembly done in th reverse order Note Ensure thatthe common marked sid of water Solenaid i con nected to ine coming from Plumbing Module SCALER MOTOR TOGGLE SWITCH PN 875041 Remove Toggle Switch 10 pin cable connector from Power Display Board Fig 12 Remove the red and black wires coming from Three Way Solenoid Remove the two brown wires coming from Scaler Locate and the violet and black wires fom Toggle Switch Remove Switch with 3 16 ax end wrench Reassemble in the reverse order Place zed wire from Three Way Solenoid into pin 7 of cable connector Place brown wire with fuse from the Scal
13. d 2 Handpiece Coolant Flow Adjust Vale Both Vales can be dias semble in a similar fashion Remove the Valve knob with a 1 16 Allen wrench ce Fig 10 Note orientation of Valve prior to removal Remove tuber from Valve Loosen inner mut with thin opes end wrench outer nut removes freely by hand Remove outer nut and Vale Remove fittings and attach to new Vale Reassembly with orientation as before Loosen inner ut so that outer nut canbe brought Aush to alv sur face Use a 9 16 open end wrench on upper body and tighten internal nut with 9 16 thin open end wrench This wil avoid damage to outer surface Ensure that valve turned to closed position and replace knob FOOT SWITCH RECEPTACLE PN 875026 Remove cable connector from PowerlDisplay Board Gee Fig 11 Remove ground wire fom ground stud With 5 6 socket Remove connector from chasis with open end wrench Reassembly is done in reverse order Ensure that all ground terminals are reinstalled MOTOR RECEPTACLE PN 75048 Remove cible connector from Power Display Board Gee Fig 11 Remove ground wire from ground stud With 5 16 socket Remove wires from Two Way Solenoid from the connector Remove water line and linc from barb This can be accomplished with small pir of xisors Note orientation of connector Remove four nuts and washers with 14 socket Remove connector from chasis Reassembiy is done in reverse order Place
14. eeve Capacity Standard 10 o1 in 1000 Water Reservoir Capac 3398 LO ter Water Flow 651 oz min 0192 High Volume Waste Tank Capac 02gal 0351 Low Volume Warte Tank Copaciy gal PAL Duy ode for AE 200 30 motor Water coolantrtigant on Continuous 100 Noter coolantfirigan Intermittent use 2 minates on and 3 minutes off 405 Noe Levels Rs aB se Im AEU 425CJCFH Transport MDS with Optional Inverter and NATO Connector in Spec Case Sie 255 x24 x12 6S 6 305 em amont 012m Weight Rs 23 For Further Service And Or Technical Assistance Contact EO Bs 1548 Woodie WA 99072156 nal east com erat encia com
15. efore pressure i stabilized the uni al to sabiize or rns on within a few seconds then an water leak is present Inepec the unit for ai or water leaks Iti bet to detec lea with a tube ora stethoscope To check the tree way syringe depress the and water buttons individually and the buttons together for spray Spray may be adjusted with the syringe water and sit fujustmeat screws in the underside ofthe plumbing chasis onthe ef ride of the unit Fig 2 the water filter onthe water pickup tube Fig 3 Water fcr equis replacement it becomes dogged and restrict water flow Inspection and Operation Verification conta The system has two way of removing moisture from the air A removable air chamber and a draimble filter Prior to the syringe To remove condensation frm the sir bottle discharge the system and remove the ait bottle and shake out the condensuton To remove moisture from the filter open the valve the Alter in the rear left comer ofthe plumbing chassis ig 4 Air filter Vacuum waste container lids should sealed and hol ing a vacuum when in operation HVE solids colector screen shoud inspected for blockage and cleaned or replaced if necessary Waste sensor operation can be checked by tuming HVE vacuum on and ling waste containers upside down individually und verifying that the motor tums off and ware fll indicator light comes To verily the electric handpiece motor f
16. er into pin 5 Place black wire from Solenoid ito pin 9 and remain ing brown wire fom Scale into pin 10 Ensure thatthe wies secure in cable connector Solder and heut rink volt and black wires back together Reinstall cable connector into Power Display Board SCALER TUBE AND HANDPIECE PN 730500 Remove Scaler Tube from fiting on Scaler Coolant Adjustment Valve sce Fig 13 Cut black and white sire coming from Tube Remove cable and binding string Pull Tube out thru chasis hol Reassemble in the reverse order After Tube has en inserted thru chasis hole install cable tie around Tube just above the grommet in chasis and off binding sting around Scaler Coolant Adjustment Valve Tim Tube and wires to fit Reattach Tube to fiti on Adjustment Valve and solder and heat shrink the wires FF Tube with RTV to prevent SCALER POTENTIOMETER PN 810164 Make a sketch of the Potentiometer orientation and Sing going o he cable connector Sealer Assembly Gee Fig 13 De solder orange red and brown wires coming from Scaler to Potentiometer Remove Potentiometer with 4 boxend wrench Reasemble in the reverse order Trim tab off Potentiometer prior to reinstalling Re tolder and heat shrink wires according to sketch Also refer o electrical Schematics SCALER MODULE PN 730500 Disconnect the wires from Power Receptaco to Power Switch se Fig 14 Disconnect cable connectors from Secondary Fuses
17. guide to symptoms and appro rate procedures to various probleme Cleaning and Lubrication When servicing the AEU 425CF CFH Military Dental System the parts of any component disssembled shouldbe thoroughly cleaned and inspected before re sembly A hot detergent solution is an effective esser on all non electrical part Flush all non secca pars with clear hot water Abrasive cleaners have the potential to damage surface fishes and should be avoided Any wiping should be dane wih a Soft it fee Electrical pars shouldbe cleaned with an appropriate secca parts cleaner air Use silicone base lubricating grease such as Dow Corning No 103 to lubricate O rings oral evacuator valves and seas inthe system Before performing any Teasenbly of parts that contain O rings or seals apply a light coat of slicane grease This will make instala tion easier and prevent the O sings or seals from being damaged WATER LINES Prepare 1 10 bleach solution 1 par household bleach to 9 part water Remove water reser oir and discard residual water Replace empty water reservoir and purge waerinen Fl water reser with bleach solution Run bleach through ali lnc Allow bleach solution to standin lines for 10 minute Remove water reservo und discard bleach Flash all lines thoroughly with clean water purge and leave t DISASSEMBLY ELECTRONICS MODULE Lay unit down Open cover and remove Electronics
18. ist connect molor to motor receptacle and connect a handpiece to molor Place a into the handpiece and secure Switch the SCALERMOTOR selector switch on the electrical chassis to MOTOR see Figure 5 Turn the coolant A tothe OFF postion Step on the foot pedal and verify that the motor is running Press the reverse button and verify that the buzzer I on and the dil has reversed direction To check for water a handpiece with water connector or check the motor to confirm hat water is coming from the stem Turn the coolant toggle tothe ON postion and adjust the coolant flow to open prior to stepping on the foot pedal Verify that water is coming ou the tube To verify the sealer svtch the SCALER MOTOR selector switch Fig 5 to SCALER With a ip on the scaler tur the coolant togl to the ON position and Open the coolant flow prior to stepping on the pedal Step on the pedal and place the tp on a piece of metal penny ete and veri that lid present and a high lich noise is present Note If the motor coolant ON OFF toggle swich is in the ON position a small amount of water willbe preset at he handpiece due to the switching of the three way solenoid for the motor scaler The above describes base inspection and verification of the AEUOSCEICFH system Ifthe sil docs mot perform as required further diagnosis of ents inthe system may require service Use the Trouble Shooting section as a
19. nal PIN 860101 to other end of green wire Cut black wire fom Sensor to 25 and older to anode nt the ba end of a diode PIN 880030 Cut 25 piece of yellow wire 22 gauge stranded and solder to same end Attach tr minal PIN 60102 to yellow wir Cut two 257 fellow wire 22 gauge standed and older o ode bar side of wire Heat shrink diode and solder joints Attach terminal PIN 860101 to one of yellow wire Cut pice of blue wire 22 gauge stranded and solder to cathode bar side on a diode PN 380050 Cut 5 piece of lue wire 22 gaugestranded sad solder to other side of diode Twist short end of blue wire cathode bar side of diode and remaining yellow wire together Heat shrink over diode Attach ing terminal PIN 860004 to cathode bar sid Attsch Pressure Sensor to bracket and reinstall tubing and connectors Note Refer to electrical schematic for lecia connections Iis best noto attach bracket to the Plumbing Chasis prior to seting pressure Twist remaining wire with ble wire coming from cable assembly and attach ring terminal P N 860004 Remove sesrow from back of Pressure Sensor and instal Air and Water Botles into their holders on Chassis Plug AEU 25CFICFH System into power source and tur the Pressure Sensor lockwise until pressure gauge located on font of Plumbing Chassis reads 50 PS1 Replace setcrcw and attach Pressure Sensorbracket PLUMBING CHASSIS Conta WASTE CONTAINER MODULES
20. ndicated by water symbol on Chassis font panel SYRINGE AIR FILTER PN 730495 Remote the two tubes gong to Fir see Fig 19 Note Removal of tubes i heated slightly with Remove plate and fting from Filter Reassemble inthe reverse order It is suggested that Lex S lubricanvseal PN 490061 be applied to fing ta prevent leakage THREE WAY AIR SOLENOID PN 730454 Remove tbe crews holding the Salva Ejector Pump Remove snap clamp from tube coming from Compresor Fig 19 Remove snap clamp from tube coming from Air Reservoir Disconnect wies to Solenoid Remove the two tubes ging to Solenoid Note Removal of tubes is cader heated slightly with heat shrink gun Remove Solenoid mounting nuts and washers with 11 37 socket Remove tube from Air Reservoir to Syringe Ar Filter Remove wraps from both Solenoid Air and remove Filters Remove the Air Solenoid Valve from Plumbing Chassis Note Orientation of Remove finge from Air Solenoid Valve and attach to new Vale Reasemble in the vere order Inspect Ai Filters and replace itflogge Cut the wo wires from Solenoid to approximately Solder ane diode PIN 880030 onto 1 piece of volt wire 22 gauge stranded to cathode bar ide of diode Salder 4 pice of volt wire 22 gauge stranded to other ide o 1 wie Twit 1 wie sido to one wire from Solenoid and heat shrink over diode Tist other wire from Solenoid to 4 wire and
21. on terminals PIN 860102 when reataching Fare 15 AIR PILOT VALVE PN 730264 Remove the three tubes going to Air Pilot Valve ce Fig 20 Remove nuts and washers with Y2 socket Remove bracket with two 9 16 open end wrenches Remove fittings and place on new Air Pilot Valve Reassenbly is done inthe reverse order SALIVA EJECTOR PUMP PN 73034818 Remove tube from underside of Plumbing Chassis to Salva Ejector Vacuum Pump sce Fig 20 Remove Vacuum Pump with 3327 Alen wrench Remove fiting from Pump Atach fitings to new Pump Note tation of plate elbow o prevent leakage tis sug that Lex Iubricantscal PIN 490061 be applied Reassemble in the revere order PRESSURE SENSOR PN 30067 Remove tube to Pressure Sensor se Fig 21 Remove wire connectors going to Pressure Sensor Remove two Screws holding wies from Presure Sensor to Relay Gatti wire fom wie close to ring terminal With 3027 Allen wrench remove two button head screws under Plumbing Chasis that attach pressure bracket Remove Pressure Sensor from Chasis Remove nut from Sensor with adjustable wrench Attach iting new Pressure Sensor Prepare new Pressure Senor first when resembling Cut red wire Ash to Sensor wire not used Cut green wire from Sensor Cut of remaining green wie and attach to green wire from Sensor with terminal P N 860102 Attach termi
22. to the FowerDisplay Board Slide cover back from Scale und remove connector Remove ute and washers holding down the Scaler plate with 5 16 socket Tun plate upside down and remove screws 1 Philips head screwdriver Remove the module Reassembly is done in the reverse order DISASSEMBLY conta THREE WAY SOLENOID PN 730474 Note the orientation of Thre Way Solenoid on Sealer plate Fig 15 Remove tubing at Three Way Solenoid Remove MotorScaler cable connector Power Display Board Remove red and black wins coming from Solenoid Remove nuts holding Scaler plate with 5 16 socket Remove Power and Fuse cable connectors from Power Display Board Elevate the plate to access the srews to Solenoid Remove screw with 1 Philips heed screwdriver Remove fitings and place on new valve Reassemble in the reverse order Orientate Three Way Solenoid Valve s tube coming from Tro Way Solenoid goes to Ming marked COM common on Three Way Solenoid The fing on top of Three Way Solenoid goes to Moto coolant On OR Toggle Vai and fing marked NC goes to Sealer coolant Toggle Valve MOTOR MODULE FAN amp COMPRESSOR COVER Lay unit om its back and remove all containers see Fig 16 Remove Filter from Compressor Motor with chan acl lock Remove the seven Cover mounting screws and washers with 2 Philpe head screwdriver Move Cover up and out to expose wires Disconnect power cable connectors to Fan
23. ts with photo callous are listed in the Parte Lit Parts marked commercially able are those items that can be purchased at retail hardware Stores and minimize service delays when obtained locally Use the information inthe Parte List when ordering replacement pars Inspection amp Operation Verifieati To verify that the AEU USCFICEH unit is functioning properly first follow the setup procedure in the Operation amp Maintenance manual Note that connectors rom the waste tank must be connected to the underside ofthe plumbing chassis in order for the compresor motor t tum oa The high vacuum bose i placed nthe toggle older with the yellow dot und the saliva ejector acm hos i placed in the toggle holder withthe red dot se Fig 1 The reason for this is thatthe s operated single dual headed compresor The compressor set up to work one head as a pressure side and the other head a the high vacuum Hide accomplished by using a way solenoid the presure side in conjunction with pressure itch and rely The thee way solenoi allows for ae from the pressure side to be distributed to the air of othe atmosphere When the power switch is turned the pressure switch wil activate the relay and the compresor motor The compresor motor il tum on and the pressure gauge wll tart climb to SO PST in a few seconds The delay prevents stalling of the compresor and shorter
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