Ingersoll-Rand PP20A-XXX-XXX User's Manual
Contents
1. PP20A XXX XXX en Page 11 of 12 DIMENSIONAL DATA Dimensions shown are for reference only They are displayed in inches and millimeters mm 2 11 1 2 N P T F 1 PP20A AXX XXX Rp 2 2 11 BSP parallel PP20A BXX XXX 2 1 2 Tri Clamp PP20A CXX XXX PP20A XSX XXxX outlet this side as Air Inlet 1 2 14 N P T F To Exhaust Port 1 1 2 11 1 2 N PT DIMENSIONS A see below B 24 3 4 628 7 mm C 10 1 16 255 66mm G 26 1 4 666 8 mm D see below Pump Model Ar p np PP20A XAX XXX 21 3 8 542 3 mm 1 7 8 47 6 mm 2 50 8 mm PP20A XSX XXX 21 3 16 537 7 mm 2 1 2 63 5 mm 2 3 32 53 0 mm PP20A CSX XXX 21 3 16 537 7 mm 2 1 2 63 5 mm 3 76 2 mm A RO GR Ingersoll Rand Industral Technologies E 16 3 32 408 5mm H 9 1 16 230 2 mm F 12 304 8 mm J 10 1 16 255 6 mm K 9 16 14 3 mm2. 1T MANIFOLD CONNECTION FLUID CAP MATERIAL OPTIONS PP20A XXX XXX Aluminum Stainless Steel BSP Tri Clamp PP20A AAX XXX PP20A BAX XXX PP20A ASX XXX PP20A BSX XXX PP20A CSX XXX Description size Diaphragm Washer Fuidcp fo init Manifold outlet manifold 0 E E 94769 tal 94769 tai 95556 ssi 95556 ss 95556 ss Pipe Plug 2 11 1 2 N P T Y17 128 R 2 2 11 BSP crew M10x1 5 6gx35mm 8 94409 1 1c 94409 2 ss 27 Screw woxrs coxssnm t163 949901 ci 94990 T SSI fNutanows en aen 049921 rel 94992 Tiss Item Description size Qty Part No Mtl Item Description size Qty Part No Mtl 1 Rod 1 94358 C 74 Pipe Plug 1 4 18 N P T x 7 16 1 Y17 51 N C 5 Back Up Washer 2 96503 14 Screw 5 8 18 x 2 1 2 2 Y5 111 T Y186 51 B 68 Air Cap mrg L ea 69 Air Cap ee TRO 2 94100 K 70 Gasket 250 Screw Self Tapping ax 12n 1 334 108 C Ch FLUID SECTION DISASSEMBLY FLUID SECTION REASSEMBLY 1 Remove 61 outlet manifold and 60 inlet manifold e Reassemble in reverse order Refer to the torque require 2 Remove 22 balls 19 O rings if applicable and 21 ments on page 7 seats e Clean and inspect all parts Replace worn or damaged 3 Remove 15 fluid caps parts with new parts as required 4 Remove the 6 diaphragm washer 7 diaphragm and 5 e Lubricate 1 diaphragm rod
3. EXAMPLE Model PP20A AAS AAA INGERSOLL RAND COMPANY LTD 209 NORTH MAIN STREET BRYAN OHIO 43506 Q 800 495 0276 FAX 800 892 6276 am Ingersoll Rand 2010 CCN 15235526 Industrial Technologies www ingersollrandproducts com a OPERATING AND SAFETY PRECAUTIONS READ UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE iS ae BBE HAZARDOUS MATERIALS W HAZARDOUS PRESSURE EXCESSIVE AIR PRESSURE W STATIC SPARK i i G ZNWARNING EXCESSIVE AIR PRESSURE Can cause per sonal injury pump damage or property damage e Do not exceed the maximum inlet air pressure as stated on the pump model plate e Be sure material hoses and other components are able to withstand fluid pressures developed by this pump Check all hoses for damage or wear Be certain dispens ing device is clean and in proper working condition ZNWARNING STATIC SPARK Can cause explosion result ing in severe injury or death Ground pump and pumping system e Use the pump grounding screw terminal provided Use ARO part no 94829 ground kit or connect a suit able ground wire 12 ga minimum to a good earth ground source Secure pump connections and all contact points to avoid vibration and generation of contact or static spark Consult local building codes and electrical codes for specific grounding requirements After grounding periodically verify continuity of electrical path to ground Test
4. L see below M see below N see below M ING 14 5 8 371 2 mm 20 5 32 512 0 mm 15 1 4 387 1 mm 20 25 32 527 8 mm 15 1 4 387 1 mm 20 25 32 527 8 mm Figure 8 PN 97999 1136 Page 12 of 12 PP20A XXX XXX en
5. O Ring oe x7is od 1 Y325 208 B1 _255 Pipe Plug ans z7nerx 1an 2 Y22714 Cl V lubriplate ML 2 Grease T on7e _ tbat Grease 10 Pak 637308 3 Install new 168 O rings and 169 seal Note the lip di rection Lubricate and replace 167 pilot piston 4 Reassemble remaining parts Replace 173 and 174 O rings MAJOR VALVE DISASSEMBLY 1 Remove 135 valve block and 233 adapter plate expos ing 166 and 132 gaskets and 176 checks 2 Remove 233 adapter plate releasing 140 valve insert 141 valve plate 199 200 and 241 gaskets and 231 243 and 244 O rings 3 Remove 136 plug and 137 O ring releasing 111 spool MAJOR VALVE REASSEMBLY 1 Install new 138 and 139 U cups on 111 spool LIPS MUST FACE EACH OTHER 2 Insert 111 spool into 135 valve housing 3 Install 137 and 242 O rings on 136 plug and assemble plug to 135 valve housing securing with 105 screws 4 Install 140 valve insert 141 valve plate 199 gasket and 231 243 and 244 O rings into 135 valve hous ing NOTE Assemble 140 valve insert with dished side toward 141 valve plate Assemble 141 valve plate with part number identification toward 140 valve insert 5 Assemble 200 and 241 gaskets and 233 adapter plate to 135 valve housing securing with 240 screws NOTE Tighten screws to 40 50 in Ibs 4 5 5 6 Nm 6 Ass
6. and 144 U cups with Lu back up washer briplate FML 2 grease 94276 grease packet is included in NOTE Do not scratch or mar the surface of 1 diaphragm rod service kit Re check torque settings after pump has been re started and run a while Page 6 of 12 PP20A XXX XXX en PARTS LIST PP20A XXX XXX FLUID SECTION FORTHE AIR MOTOR SECTION SEE PAGES 74 8 amp 9 61 PP20A CSX XXX 74 Torque Sequence 61 PP20A XSX XXX 63 74 61 PP20A XAX XXX 26 8 N KC Q ao m 1 180 131 60 PP20A XAX XXX eo 41 PP20A XSX XXX D 26 u 19 xk 250 60 PP20A CSX XXX Figure 4 TORQUE REQUIREMENTS LUBRICATION SEALANTS NOTE DO NOT OVERTIGHTEN FASTENERS Apply PTFE tape to threads 14 diaphragm screws 65 70 ft Ibs 88 1 94 9 Nm Apply Loctite 242 to threads at assembly 26 screws 30 40 ft Ibs 40 7 54 2 Nm Apply Loctite 271 to threads at assembly 27 screws 30 40 ft Ibs 40 7 54 2 Nm Apply Lubriplate FML 2 grease 94276 to all O rings U cups and 131 screws 35 40 ft Ibs 47 5 54 2 Nm mating parts Apply anti seize compound to threads and bolt and nut flange heads which contact pump case when using stainless steel fasteners PP20A
7. include pump in preventive maintenance program Certain ARO Smart Parts are indicated which should be available for fast repair and reduction of down time Service kits are divided to service two separate dia phragm pump functions 1 AIR SECTION 2 FLUID SEC TION The FLUID SECTION is divided further to match typical part MATERIAL OPTIONS Provide a clean work surface to protect sensitive internal moving parts from contamination from dirt and foreign matter during service disassembly and reassembly e Before disassembling empty captured material in the outlet manifold by turning the pump upside down to drain material from the pump SCHEMATIC CIRCUIT Right 4 TROUBLE SHOOTING Product discharged from exhaust outlet Check for diaphragm rupture Check tightness of 14 diaphragm screw Motor blows air or stalls Check 176 check valve for damage or wear Check for restrictions in valve exhaust Low output volume erratic flow or no flow Check air supply Check for plugged outlet hose Check for kinked restrictive outlet material hose Check for kinked restrictive or collapsed inlet material hose Suction hose must be a non collapsing type conductive and capable of pulling a high vacuum up to 30 mer cury Check all joints on the inlet manifolds and suction con nections Connection must be air tight Inspect the pu
8. most of the powder has been purged before it is shut down Calibration procedure on initial start up NOTE Once these parameters are established for your spe cific application they should not need to be changed 1 Turn the flow and pressure on the 248 filter regulator all the way up 2 Slowly decrease pressure and flow until pump begins to labor work harder 3 Increase pressure and flow back to a point where the pump begins to run smoothly This will optimize the air to powder mix and will help to establish the most effi cient working parameters If the pump should begin to cycle slowly bog down the powder can be purged by depressing restart button This will stop the pump and restart the aeration cycle and allow time to increase air flow to the aeration ports for proper material movement IMPORTANT SHUT DOWN PROCEDURE TO HELP PREVENT PACK OUT It is good operating practice to dry cycle the pump 5 10 seconds at the end of each dispense cycle This can be ac complished by closing off the powder source at the suction of the pump or pull wand from material This will help clear the pump chambers of any residual powder NOTICE Failure to insure proper fluidization can result in internal parts breakage and pump failure MAINTENANCE Refer to the part views and descriptions as provided on page 6 through 11 for parts identification and Service Kit informa tion e Keep good records of service activity and
9. with an ohmmeter from each component e g hoses pump clamps con tainer spray gun etc to ground to insure continuity Ohmmeter should show 0 1 ohms or less Submerse the outlet hose end dispensing valve or device in the material being dispensed if possible Avoid free streaming of material being dispensed Use hoses incorporating a static wire Use proper ventilation Keep inflammables away from heat open flames and sparks Keep containers closed when not in use ZAWARNING Pump exhaust may contain contaminants Can cause severe injury Pipe exhaust away from work area and personnel e In the event of a diaphragm rupture material can be forced out of the air exhaust muffler e Pipe the exhaust to a safe remote location when pumping hazardous or inflammable materials e Use a grounded 1 minimum i d hose between the pump and the muffler ZAWARNING HAZARDOUS PRESSURE Can result in seri ous injury or property damage Do not service or clean pump hoses or dispensing valve while the sys tem is pressurized Disconnect air supply line and relieve pressure from the system by opening dispensing valve or device and or carefully and slowly loosening and removing out let hose or piping from pump ZAWARNING HAZARDOUS MATERIALS Can cause serious injury or property damage Do not attempt to return a pump to the factory or service center that contains hazardous material Safe handling practices must com
10. OPERATOR S MANUAL PP20A XXX XXX INCLUDING OPERATION INSTALLATION amp MAINTENANCE RELEASED 6 2 05 REVISED 6 21 10 2 DRY POWDER DIAPHRAGM PUMP 1 1 RATIO METALLIC ae READ THIS MANUAL CAREFULLY BEFORE INSTALLING LL OPERATING OR SERVICING THIS EQUIPMENT It is the responsibility of the employer to place this information in the hands of the operator Keep for future reference SERVICE KITS PP20A XXX XXX Powder Pump Refer to Model Description Chart to match the pump mate rial options 7102 valve kit for repair of H254PS control valve 104255 for repair of P29122 100 filter regulator 118597 002 spool kit for repair of A212PD 4 way alpha valve 637309 XX for fluid section repair see page 6 NOTE This kit also contains several air motor seals which will need to be replaced amg 637421 for air section repair see page 8 eth PUMP DATA PP20A XSX XXX Models see Model Description Chart for XXX Pump Type Metallic Dry Powder Diaphragm Pump PP20A CXX XXX Figure 1 Material see Model Description Chart Specific Application for pumping powders up to 50 lb ft MODEL DESCRIPTION CHART Weight PP20A XAX XXX 99 4 Ibs 45 1 kgs PP20A XSX XXX 000 157 8 Ibs 71 6 kgs PP20A X X X X
11. XX Maximum Air Inlet Pressure 50 p s i g 3 4 bar Maximum Fluidizing Pressure 100 p s i g 6 9 bar Maximum Particle Size 1 4 dia 6 4 mm Fluid Connection Maximum Temperature Limits diaphragm ball seal i l p NETE 1 materials C 2 1 2 Tri Clamp Nitrile oe eee 10 to 180 F 12 to 82 C Santoprene 40 to 225 F 40 to 107 C Fluid Cap amp Manifold Material Dimensional Data see page 12 A Aluminum Mounting Dimension 9 1 16 x 10 1 16 230 mm x 256 mm 5 Stainless Stee Noise Level 70 p s i 50 c p m 83 0 db A Hardware Materia P Plated Steel Tested with 94085 muffler assembly installed S Stainless Stee The pump sound pressure levels published here have been updated to an Equivalent Continuous Sound Level Lacq to meet the intent of ANSI Seat Material S1 13 1971 CAGI PNEUROP S5 1 using four microphone locations A Santoprene S Stainless Stee NOTICE All possible options are shown in the chart however certain combinations may not be recommended Consult a representative or Ball Material the factory if you have questions concerning availability A Santoprene M Medical Grade Santoprene Diaphragm Material A Santoprene M Medical Grade Santoprene Fluid Section Service Kit Selection PP20A XXX XXX 637309 XIX Fluid Section Service Kit 637309 AA Ball Diaphragm
12. XXX XXX en Page 7 of 12 PARTS LIST PP20A XXX XXX AIR MOTOR SECTION v Indicates parts included in 637421 air section repair kit plus items 70 144 175 and 180 page 6 AIR MOTOR PARTS LIST item Description in O PartNo imen 101 centerBody Tmn 94028 m1 ios ray 95955 ezr Bushing 105 Screw monoaraomm 95867 1581 Cm fspo f Jose fi 116 Actuator Pin azra 2 94083 fiss Taai sieeve Tofoa fm 126 set Screw orzo 29425 iss 7132 Gasket foao fier 7133 Lockwasherw Prnt7 av6 ie 7134 Screw wsxa eoxsomm a ease SST 135 ValveHousing m os346 m Lisefew fas m 7137 0 kingono m Y32532 181 7738 U Cup onera m oso66 1er 7739 f u cupones m v1s650 181 iao valveinset m 95650 fici Lian valvepie m oss59 ica 7166 Track Gasket m oao2s 18 7167 Pilot Piston raudas rosana ren 1 67164 101 ies o Ringearxswaan oaas 101 MATERIAL CODE A Aluminum C Carbon Steel SS Stainless Steel B Nitrile Ck Ceramic U Polyurethane Br Brass D Acetal Bz Bronze Sp Santoprene AIR MOTOR SECTION SERVICE Service is divided into two parts 1 Pilot Valve 2 Major Valve GENERAL REASSEMBLY NOTES e Air motor section service is continued from fluid section repair Inspect and replace old parts with new parts as neces sary Look for deep scratches on metallic surfaces and nicks or cuts in O rings e Take precautions to prevent cuttin
13. back Fiter Regulator 1 P2912200 249 Nipplewe tenere rxrsney 1 1950 251 Restrictor 95077 _252 Alpha Valve 4 Way A212PD_ _253 Flow Control 14 od tubex i0 32 1 119309 103 254 Reducer 1 4 o d tube x 5 32 o d tube 1 59765 4 256 Connector v4 od tubextie 27ner 5 59474 56 257 Adapteris 2ert m 94812 _258 Button Bleed Valve vs 27neTF 1 24130 _259 Elbow 5 32 o d tubex 1 8 27NPT 4 59756 4 KOCU G E Josie 262 Pipe Plug 04 1817 x7n6 2 Y17 51 N_ VIEW A A Item Description tizo Qty PartNo _263 Control Valve m H254Ps Pipe Plug with 0 078 orifice 1 2 14 N P T _265 Nipple o2 14neTE 1x118 1 Y27 4 C 266 Reducing Bushing 3 4 ranerx12 r4nen 1 45 9 C 268 Tube 1 4 0 d x 2 _269 Tube issz oaxo m 94981 10 270 Tubewssredx712 1 94981 10 Elbow 1 4 o d tube x 1 4 18 N P T 273 Nutwo 20 8 Y22 10 C _274 Lock Washer mo 3 Y1s1o c_ Screw 5 16 18x 1 277 Nut sne VIDS _278 Washer aan 2 NBC a Bulk Tubing 1 4 o d x 100 Bulk Tubing s22 odx100 1 94981 100 256 260 256 262 o N 251 247 249 259 Figure 6 PP20A XXX XXX en Page 10 of 12 PARTS LIST PP20A XXX XXX CONTROL SECTION See view A A
14. emble 132 and 166 gaskets and 176 checks to 101 center body 7 Assemble 135 valve housing and components to 101 center body securing with 134 screws NOTE Tighten screws to 40 50 in Ibs 4 5 5 6 Nm Page 8 of 12 PP20A XXX XXX en PARTS LIST PP20A XXX XXX AIR MOTOR SECTION 2 PILOT VALVE PART GROUP 118 x169 168 172 121 171 x 255 140 ve 243 x 231 x 173 167 Y x174 Li w 173 x ve 199 244 233 240 166 118 174 x gt gt 134 138 A 111 139 lt p 137 242 128 Figure 5 136 105 TORQUE REQUIREMENTS MAJOR VALVE NOTE DO NOT OVERTIGHTEN FASTENERS ALL FASTENERS ARE METRIC 105 screw 40 50 in Ibs 4 5 5 6 Nm 134 screw 40 50 in Ibs 4 5 5 6 Nm 240 screw 40 50 in Ibs 4 5 5 6 Nm LUBRICATION SEALANTS x Apply Lubriplate FML 2 grease to all O rings U cups and mating parts Apply Loctite 271 to threads at assembly PP20A XXX XXX en Page 9 of 12 PARTS LIST PP20A XXX XXX CONTROL SECTION AIR CONTROL PARTS LIST Item Description size Qty PartNo 76 Adapterive 2nere 0 2 94817 77 Elbow 1 4 o d tube x 1 8 27 N P T 2 59756 56 78 Tube ns oaxian 2 59675 0 ELI 246 Adapter veners malex i0 32femate 1 59629 Gauge 0 160 p si 0 11 bar a 29850 as Piggy
15. g O rings upon instal lation Lubricate O rings with Lubriplate FML 2 grease Do not over tighten fasteners refer to torque specifica tion block on view Re torque fasteners following re start Service Tools To aid in the installation of 168 O rings onto the 167 pilot piston use tool 204130 T available from ARO PILOT VALVE DISASSEMBLY 1 A light tap on 118 should expose the opposite 121 sleeve 167 pilot piston and other parts 2 Remove 170 sleeve Inspect inner bore of sleeve for damage PILOT VALVE REASSEMBLY 1 Clean and lubricate parts not being replaced from service kit 2 Install new 171 and 172 O rings Replace 170 sleeve Item Description siz Qty Part No rmen 169 U Cupierxrereay 1 Y2409 1B 170 Piston Seere m oaos fier v 171 O Ring az xrveroa 1 Y325 119 1B V 172 O Ringanexrsoan 1 Y325 22 1B y 173 O Ring ans xrs roa 2 Y325 26 B1 v 174 O Ring as xuzoa 2 Y325 202 1B Y 176 Diaphragm checkvave 2 94102 tSp 7195 Tack Gasket m osses i1 720 casket fosses T mr 201 mutter yoann 231 O Ring 3 32 x 11 32 o d 2 325 105 1B 233 adapterPate Ton foesa7 fi 240 Screw mex1 sgx16mm 2 95991 SSI 72 Tack Gasket m fossa T i v 242 O Ring ans xziszroan 1 Y325 5 1B O Ring 1 8 x 5 8 o d 1 Y325 204 B v 244
16. ibility of the installer and operator Secure the diaphragm pump legs to a suitable surface to avoid damage by excessive vibration OPERATING INSTRUCTIONS START UP NOTE PRIOR TO START UP MAKE SURE THE GROUNDING INSTRUCTIONS WERE FOLLOWED 1 Connect air supply to 263 main air supply control valve 30 40 p s i 2 1 2 8 bar 2 Turn the air on 3 Attach air or gas to 248 filter regulator CAUTION Do not apply excessive Fluidization Gas Pressure refer to note under General Description 4 At 248 turn on air or inert gas supply There will be a 3 to 8 second time delay during which the pump will be fluidizing any powder left in the pump from an earlier dispense This time delay will occur on all start ups OPERATION AND ADJUSTMENT NOTE Powder type materials can vary in flow ability and the same settings may not work universally Factors such as den sity and humidity can require changing the mixture of flow rate and fluidization air and some experimenting should be expected IMPORTANT DO NOT TURN FILTER REGULATOR 248 OFF Positive air or gas pressure must be supplied to the filter regulator to allow the pump to function Powder will accu mulate in the fluid caps if the pump is not allowed to expel excess material before the pump shuts down Restart can PP20A XXX XXX en Page 3 of 12 compress some powders to a solid that may cause the pump to fail The pump should cycle until
17. mp for solid objects lodged in the dia phragm chamber or the seat area e Loctite and 242 are registered trademarks of Henkel Loctite Corporation ARO is a registered trademark of Ingersoll Rand Company e Santoprene is a registered trademark of Monsanto Company licensed to Advanced Elastomer Systems L P e 271 is a trademark of Henkel Loctite Corporation e Lubriplate is a registered trademark of Lubriplate Division Fiske Brothers Refining Company lt Page 4 of 12 PP20A XXX XXX en TYPICAL CROSS SECTION o o o o o o o o o o o o o o o o Figure 3 PP20A XXX XXX en Page 5 of 12 PARTS LIST PP20A XXX XXX FLUID SECTION 637309 XX fluid section service kits include Balls item 22 diaphragms item 7 and items 19 70 144 175 listed below plus items 174 and 94276 Lubriplate FML 2 grease page 8 SEAT OPTIONS BALL OPTIONS MATERIAL CODE PP20A XXX XXX PP20A XXX XXX i Alani 1217 X 22 2 1 2 diameter is sm Steel XXX Seat Qty Mtl XXX Ball Qty Mtl MSp Medical Grade Santoprene Axx 94328 A 4 Spl _ XAX 93358 A 4 Spl Eel Staines Stee sxx 94353 4 tssi __ xmx 93358 m 4 Mspl afte DIAPHRAGM OPTIONS PP20A XXX XXX Service Kit KT xk 19 1 8 x3 5 8 o d XX Ball XX Diaphragm Diaphragm Qty Mtl O Ring axa esrsooxa oasa T ism e aam 63730904M 04329m 2 imspi Y328 237
18. ply with local and national laws and safety code requirements e Obtain Material Safety Data Sheets on all materials from the supplier for proper handling instructions ZAWARNING EXPLOSION HAZARD Models containing alu minum wetted parts cannot be used with 1 1 1 trichlo roethane methylene chloride or other halogenated hydrocarbon solvents which may react and explode Check pump motor section fluid caps manifolds and all wetted parts to assure compatibility before using with solvents of this type ZAWARNING MISAPPLICATION HAZARD Do not use mod els containing aluminum wetted parts with food prod ucts for human consumption Plated parts can contain trace amounts of lead ZX CAUTION Verify the chemical compatibility of the pump wetted parts and the substance being pumped flushed or recirculated Chemical compatibility may change with temperature and concentration of the chemical s within the substances being pumped flushed or circulated For specific fluid compatibility consult the chemical manufacturer ZX CAUTION Maximum temperatures are based on mechanical stress only Certain chemicals will signifi cantly reduce maximum safe operating temperature Consult the chemical manufacturer for chemical com patibility and temperature limits Refer to PUMP DATA on page 1 of this manual ZX CAUTION Be certain all operators of this equipment have been trained for safe working practices under stand it
19. rst for 3 to 8 seconds The time delay then supplies the start signal to open the main pump air supply valve When the pump diaphragm reaches the end of the discharge stroke it reverses direction The distribution valve then shifts and shuts off the fluidizing air to the first fluid chamber as it applies a burst of air to the second fluid cham ber and fluidizes the powder in the second chamber The air induction orifice 76 increases the air velocity prior to injection point because of the orifice and it prevents clog ging of the injector feed line NOTE The restart valve 258 is a bleed valve which will stop the pump and then restart the pump by re initiating the time delay cycle NOTE Use of other gases Using only a gas to operate a 2 pump can be rather expensive because of the high volume needed Separate air gas inputs allow the fluidizing feature of this pump to utilize special inert gas such as Nitrogen or Argon air if necessary and still allow use of standard com pressed shop air for the pumping function The ability to introduce special gas also means special ma terials could be injected through the fluidization lines Ap plications may include such materials as colorants foaming agents additives neutralizers etc AIR AND LUBE REQUIREMENTS AMARNING EXCESSIVE AIR PRESSURE Can cause pump damage personal injury or property damage The pump air supply must be limited to 50 p s i g 3 4 bar maximum inlet air pres
20. s limitations and wear safety goggles equip ment when required Do not use the pump for the structural sup port of the piping system Be certain the system com ponents are properly supported to prevent stress on the pump parts Suction and discharge connections should be flex ible connections such as hose not rigid piped and should be compatible with the substance being pumped ZX CAUTION Prevent unnecessary damage to the pump Do not allow pump to operate when out of material for long periods of time e Disconnect air line from pump when system sits idle for long periods of time ZX CAUTION Use only genuine ARO replacement parts to assure compatible pressure rating and longest service life NOTICE Replacement warning labels are available upon request Static Spark amp Diaphragm Rupture pn 94080 ZAWARNING Hazards or unsafe practices which could result in severe personal injury death or substantial property damage ZX CAUTION Hazards or unsafe practices which could result in minor personal injury product or property damage Important installation operation or maintenance information NOTICE Page 2 of 12 PP20A XXX XXX en GENERAL DESCRIPTION The ARO diaphragm pump offers high volume delivery even at low air pressure and a broad range of material compat ibility options available Refer to the model and option chart ARO pumps feature stall resi
21. stant design modular air motor fluid sections Air operated double diaphragm pumps utilize a pressure dif ferential in the air chambers to alternately create suction and positive fluid pressure in the fluid chambers valve checks insure a positive flow of fluid This diaphragm pump was developed to address the unique problems associated with pumping dry powders which can pack out inside the pump fluid chambers if not kept in a semi fluid state This system incorporates the use of special valves to intro duce air or inert gas into the fluid chambers simultaneously to a pumping cycle in a timed sequence which keeps the powder in a fluidized state during the transfer process THEORY OF OPERATION The main air distribution valve 252 is a double pilot actu ated four way valve It is a slave to the pump major air valve The distribution valve recognizes the signal from two pump major air valve 259 ports air dumps These signals are con verted into alternating output pressure distributions which are injected into the fluid chambers during the pumping cy cle to fluidize the powder as the diaphragm moves through the discharge stroke The flow of air supplied to the fluid chamber is controlled by the 248 filter regulator Under normal operating condi tions this is the primary control When air is supplied to the filter regulator 248 the dis tribution valve directs the flow of air into the fluid chamber that will dispense fi
22. sure e The air supply line or hose to the pump should be ad equately sized to carry a sufficient volume of air to the pump The material inlet supply tubing should not be too small or restrictive which will inhibit material flow The outlet material volume is governed not only by the air supply but also by the material volume available at the inlet Air supply provided should be filtered to provide clean dry air A filter capable of filtering out particles larger than 40 microns should be used on the air supply There is no lubrication required other than the O ring lubricant which is applied during assembly or repair If lubricated air is present make sure that it is compatible with the Nitrile O rings in the air motor section of the pump e NOTE When using air for powder fluidization make sure it is filtered and very dry INSTALLATION THE PUMPING SYSTEM MUST BE GROUND ED TO PREVENT STATIC DISCHARGE THIS INCLUDES THE PUMP AND ALL INPUT AND OUTPUT SUPPLY LINES AND RELATED SYSTEM DEVICES AND ACCESSO RIES FAILURE TO DO SO CAN RESULT IN EXPLOSION AND SERIOUS PERSONAL INJURY SYSTEM GROUNDING e Consult local building codes and electrical codes for specific requirements Must comply with all applicable Local and National codes for such applications Grounding is accomplished through the ground lug and strap provided on the pump Keep the grounding strap as short as possible Safe operating conditions are the respons
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