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Before installing the PX-7 Gun and start-up, carefully read all the
technical and safety documentation included in this manual.
special attention to the information in order to know and understand
the operation and the conditions of use of the PX-7 Gun. All of the
information is aimed at improving user safety and avoiding possible
breakdowns from the incorrect use of the PX-7 Gun.
Mechanical Purge
Spray & Pour Gun
PX-7
For use with non-flammable Foam and
Polyurea
For professional use only
Not for use in explosive atmospheres
Service Manual
Ref. # MN-04028
Revision 2.3
March 2, 2021
Subscribe to our YouTube
channel, "Polyurethane
Machinery Corporation
PMC", for video
instructions.
Polyurethane Machinery Corp.
Corporate: 1 Komo Drive, Lakewood, NJ 08701
Manufacturing: 2 Komo Drive, Lakewood, NJ 08701
Phone: 732-415-4400
Fax: 732-364-4025
URL:
http://www.polymacusa.com
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Summary of Contents for PMC PX-7
- Page 1 PX-7 Gun. All of the information is aimed at improving user safety and avoiding possible...
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Page 2: Table Of Contents
PX-7 Tool Kit ......................... 30 Cylinder/Piston Rebuild Kit ....................32 Trigger Rebuild Kit ........................ 32 Gun Block Rebuild Kit, PX-7 ....................32 Screen Screw Kit, A-Side, PX-7 .................... 33 Screen Screw Kit, R-Side, PX-7 .................... 33 REV 2.3: March 2, 2021... - Page 3 Figure 15: Flush Block Installation.....................16 Figure 16: Clean Parts ......................17 Figure 17: 2.5 Gallon Flush Tank (200426) ................20 Figure 18: 1 QT Mini Flush Tank (200216) ................20 Figure 19: Kit MA-41 Shown on PX-7 ..................33 REV 2.3: March 2, 2021...
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Page 4: Warranty
Defective in material or workmanship, it is Customer’s responsibility to contact PMC and return the Product to PMC as directed by PMC, freight prepaid. If PMC determines that the Product is Defective and that such Defect is covered by this Warranty, PMC will credit Customer for the reasonable freight charges incurred by Customer in returning the Defective Product to PMC, and PMC (or its authorized agent) will, at PMC’s option, repair or replace the Product, subject to... - Page 5 No Rights Implied: Nothing in the sale, lease or rental of any Product by PMC shall be construed to grant any right, interest or license in or under any patent, trademark, copyright, trade secret or other proprietary right or material owned by anyone;...
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Page 6: Safety And Handling
By following the instructions and recommendations contained, you will reduce the potential risk of accidents in the installation, use or maintenance of the PX-7 Gun; you will provide a better opportunity for incident-free operation for a longer time, greater productivity and the possibility of detecting and resolving problems fast and simply. - Page 7 Technical Specifications of this Manual to be exceeded. Always use liquids and solvents that are compatible with the PX-7 Gun. If in doubt, consult PMC Technical Service. When working with the PX-7 Gun, it is recommended that the operator wear suitable clothing and elements of personal protection, including, without limitation, gloves, protective goggles, safety footwear and face masks.
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Page 8: Technical Specifications
Maximum Working Pressure: ..............3,500 psi (245 Bar) Required Incoming Air Pressure: ................ 90-125 psi (6.2-8.6 Bar) Weight (Not including Coupling Block): ..............4.3 lbs (2.0 kg) Weight (Including Coupling Block):................ 5.0 lbs (2.3 kg) Figure 1: PX-7 Dimensions Flow Rates of Spray Modules MODULE KIT PRESSURE OUTPUT PATTERN DIA. -
Page 9: General Description
PX-7 GENERAL DESCRIPTION GENERAL DESCRIPTION Figure 2: PX-7 Overview Figure 3: PX-7 Side View REV 2.3: March 2, 2021... -
Page 10: Operation
PX-7 OPERATION OPERATION CAUTION! When working with the PX-7 Gun or performing maintenance work, wear suitable safety protection in accordance with the recommendations and specifications provided by the product suppliers. 1. Set the Safety Stop to the LOCKED position (see Figure 4). -
Page 11: Figure 6: Coupling Block Hose Installation
PX-7 OPERATION 3. Install hose to the Coupling Block (see Figure 6). Figure 6: Coupling Block Hose Installation NOTE! The material delivery hoses are color coded Red and Blue. The Red corresponds to the Isocyanate (A) and the Blue to the Polyol (R). To avoid connection errors, the (A) and (B) hoses have connections with different sizes to avoid incorrect connections. -
Page 12: Figure 8: Air Inlet Configuration Options
PX-7 OPERATION 5. Connect the Coupling Block to the Gun Block using the Nut Driver provided. Tighten the Coupling Block until there is a hand tight seal. 6. Connect the Air Hose to the Air Inlet at the back of the Gun, and then connect the Air Hose to the Supply Air Hose. -
Page 13: Mixing Module And Pcd Installation
PX-7 OPERATION Mixing Module and PCD Installation 1. Remove the Coupling Block from the Gun. 2. Flush the Gun Block per the Daily Cleaning Procedure on page 16 3. Remove the Air Cap, PCD Retainer, PCD, Front Packing Retainer with the Front Packing, and the Mixing Module as applicable 4. -
Page 14: Figure 10: Spray Configuration
PX-7 OPERATION 13. For pour applications, skip this step. For spray applications, install the PCD onto the Front Packing Retainer and screw the PCD Retainer and Air Cap (See Figure 10). Figure 10: Spray Configuration Figure 11: Pour Configuration 14. Adjust Valving Rod per the procedure on page 12. -
Page 15: Valving Rod Adjustment
PX-7 OPERATION Valving Rod Adjustment CAUTION! Failure to perform Valving Rod Adjustment Procedure properly may cause pattern deformation and damage to Valving rod and/or PCD. 1. Set the Safety Stop to the LOCKED position. 2. Ensure the Manual Valves are CLOSED by turning them to the full clockwise position. -
Page 16: Rear Packing Nut Adjustment
PX-7 OPERATION Rear Packing Nut Adjustment 1. Rear Packing Nut (see Figure 13) should be initially installed finger-tight, then turned with a ½” wrench one half turn. Figure 13: Rear Packing Nut 2. If excessive leaking occurs during operation, adjust Rear Packing Nut with a ½” wrench as necessary to prevent leakage. -
Page 17: Air Cap Valve Adjustment
PX-7 OPERATION Air Cap Valve Adjustment 1. Experiment with spraying. 2. If excessive overspray is observed and/or spray pattern is not satisfactory, decrease air flow to Air Cap by turning Air Cap Adjustment Valve clockwise (see Figure 14). 3. If mixed material builds up on PCD, increase air flow to Air Cap by turning Air Cap Adjustment Valve counter-clockwise. -
Page 18: Maintenance
PX-7 MAINTENANCE To obtain maximum performance from your PX-7 Gun, it is necessary to periodically perform certain maintenance operations WARNING! Before proceeding with any maintenance work on the PX-7 Gun, trigger the gun to remove internal material pressure, ensure the Manual Valves are CLOSED, ensure the... -
Page 19: Daily Cleaning Procedure
PX-7 MAINTENANCE Daily Cleaning Procedure 1. Remove the Coupling Block and install the Flush Block. Figure 15: Flush Block Installation 2. Ensure the Flush Tank is pressurized (see Flush Tank manual for instructions). 3. Trigger the Gun into a waste container until the solvent or gun cleaner has completely flushed the system. -
Page 20: Figure 16: Clean Parts
7. Inspect and clean Gun Block, Air Cap, PCD Retainer, PCD, Mixing Module, Screen Screws, Screens, and Check Valves. Figure 16: Clean Parts 8. Use supplied PMC Lubriplate Grease on O-rings and threads. CAUTION! Never use air tool oil to lubricate gun. The use of air tool oil can cause the O-rings to swell and will void the warranty. -
Page 21: Trouble Shooting Guide
PX-7 TROUBLE SHOOTING GUIDE TROUBLE SHOOTING GUIDE PROBLEM POSSIBLE CAUSE SOLUTION Lock is in “Locked” position Unlock gun Air supply is not on Turn on air supply Material does not Manual Valves CLOSED OPEN spray when Gun is Mixing Module Inlet Orifices plugged... -
Page 22: Reference Guide
PX-7 REFERENCE GUIDE REFERENCE GUIDE Spray Module Kits MODULE RESIN DRILL NO. OF ITEM KIT ITEM MODULE PCD NO. PORT PORT PORTS DIA. (in) DIA. (in) 200561 200547 #1 ROUND 0.0320 0.0320 200562 200549 #3 ROUND 0.0225 0.0180 200565 200551 #5 ROUND 0.0225... -
Page 23: Torque Specifications
PX-7 REFERENCE GUIDE Torque Specifications TORQUE SPECIFICATIONS RECOMMENDED PART NUMBER DESCRIPTION TORQUE 200376 MOUNTING BOLT, BRIDGE, PX-7 80 – 90 in-lbs 200507 PIPE PLUG, 1/16, NPT , STEEL 2-3 T.F.F.T.* 200456 FRONT PACKING RETAINER, PX-7 225 in-lbs 200508 PIPE PLUG, 1/8, NPT , STEEL 2-3 T.F.F.T.*... -
Page 24: Parts Identification
PX-7 PARTS IDENTIFICATION Gun Assembly GUN ASSEMBLY ITEM PART NUMBER DESCRIPTION 200376 MOUNTING BOLT, BRIDGE, PX-7 200438 CYLINDER CLAMP, PX-7 200468 GUN BLOCK ASSY, PX-7 200469 AIR PISTON ASSEMBLY 200470 HANDLE ASSEMBLY, PX-7 201582 SHCS, #10-32 X 0.625, 18-8 SS 201894 SHCS, 8-36 X 0.625, SS... -
Page 25: Gun Block Assembly
Gun Block Assembly GUN BLOCK ASSEMBLY 200468 ITEM PART NUMBER DESCRIPTION 200361 GUN BLOCK, PX-7 200381 SCREEN, 60 MESH, PX-7 200391 REAR PACKING NUT, PX-7 200392 REAR PACKING RETAINER, PX-7 200393 SCREEN SCREW, R-SIDE, PX-7 200394 SCREEN SCREW, A-SIDE, PX-7... -
Page 26: Air Cylinder Assembly
PX-7 PARTS IDENTIFICATION Air Cylinder Assembly REV 2.3: March 2, 2021... -
Page 27: Item Part Number
O-RING, VITON, -010 200462 O-RING, VITON, -004 200463 O-RING, VITON, -009 200471 PISTON ASSEMBLY, PX-7 200472 CYLINDER END CAP ASSEMBLY, PX-7 200473 TWO POSITION STOP ASSEMBLY, PX-7 200717 CYLINDER, PX-7 201582 SHCS, #10-32 X 0.625, 18-8 SS REV 2.3: March 2, 2021... -
Page 28: Handle Assembly
LOCKNUT, HEX, 5-40, SS 200507 PIPE PLUG, 1/16, NPT , STEEL 200508 PIPE PLUG, 1/8, NPT, STEEL 200513 O-RING,VITON,9.25 x 1.78MM 200705 SPACER 202306 SUB ASSY, HANDLE W/ SET SCREWS, PX-7 202307 BHCS, #4-40 X 0375, 18-8 SS REV 2.3: March 2, 2021... -
Page 29: Coupling Block Assembly
TN-04192 PIPE PLUG, 1/8 NPT, STL TN-04193 COUPLING BLOCK MOUNTING SCREW TN-04197 COUPLING BLOCK STABILIZER MOUNTING SCREW TN-04193 is used for AP-3, AP-EX, and PX-7 gun models. TN-04197 is used for AP-2 gun models only. REV 2.3: March 2, 2021... -
Page 30: Manual Valve Assembly
PX-7 PARTS IDENTIFICATION Manual Valve Assembly Note: Orientation of the Back-Up Ring is critical. The concave side must be aligned = Apply Red Loctite 263 or similar to with the o-ring as shown above when it is indicated threads. installed. -
Page 31: Spray Module Components
See page 19 for Spray Module and PCD data. SPRAY MODULE COMPONENTS ITEM PART NUMBER DESCRIPTION 200397 FRONT PACKING, PX-7 200456 FRONT PACKING RETAINER, PX-7 See page 19 200493 PCD RETAINER, PX-7 200494 AIR CAP, PX-7 200502 O-RING, AFLAS, -118... -
Page 32: Pour Module Components
PX-7 PARTS IDENTIFICATION Pour Module Components See page 19 for Pour Module data. POUR MODULE COMPONENTS ITEM PART NUMBER DESCRIPTION 200456 FRONT PACKING RETAINER, PX-7 See page 19 POUR MODULE REV 2.3: March 2, 2021... -
Page 33: Spare Parts & Rebuild Kits
PX-7 SPARE PARTS & REBUILD KITS SPARE PARTS & REBUILD KITS PX-7 Tool Kit REV 2.3: March 2, 2021... - Page 34 PX-7 SPARE PARTS & REBUILD KITS PX-7 Gun Tool Kit 200575 ITEM PART NUMBER DESCRIPTION 200454 Pipe Nipple, PX-7 200576 5/8" Combination Wrench 200577 5/16 x 3/8" Open End Wrench 200578 Adjustable Wrench 200579 Air Valve Tool 200580 Cleanout Brush 200581 3/32"...
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Page 35: Cylinder/Piston Rebuild Kit
SPOOL VALVE 200440 LINER 200441 SPRING 200463 O-RING #009 200513 O-RING #013 GP-LUBEGREASE GREASE Gun Block Rebuild Kit, PX-7 200617 PART NUMBER DESCRIPTION 200381 SCREEN, 60 MESH, PX-7 200393 SCREEN SCREW, R-SIDE, PX-7 200394 SCREEN SCREW, A-SIDE, PX-7 200396 REAR SEAL PACKING, PX-7... -
Page 36: Screen Screw Kit, A-Side, Px-7
SCREEN KIT 80 (STANDARD WITH SPRAY GUN) 1/4” Unheated Stainless Steel Hose Assy. MA-41 PART NUMBER DESCRIPTION MA-43 AIR HOSE, 22” MA-41A REPLACEMENT HOSE, “A” SIDE MA-41R REPLACEMENT HOSE, “R” SIDE Figure 19: Kit MA-41 Shown on PX-7 REV 2.3: March 2, 2021... -
Page 37: Px-7 Spare Parts Kits
200396 REAR SEAL PACKING, PX-7 200442 SCREEN SCREW SEAL, PX-7 200443 CHECK VALVE ASSY, PX-7 200444 COUPLING BLOCK, GASKET, PX-7 200547 MOD KIT, #1RD, PX-7 (W/DRILLS) 200549 MOD KIT, #3RD, PX-7 (W/DRILLS) 200551 MOD KIT, #5RD, PX-7 (W/DRILLS) 200553 MOD KIT, #10FT, PX-7 (W/DRILLS) -
Page 38: Kit List
SCREEN, 80, PX-7 TRIGGER MT SCREW KIT, PX-7 200437 SHOULDER BOLT, PX-7 200647 200467 LOCKNUT, PX-7 REAR SEAL PACKING KIT, PX-7 (QTY 5) 200648 200396 REAR SEAL PACKING, PX-7 SCREEN SCREW SEAL KIT (QTY 2) 200649 200442 SCREEN SCREW SEAL, PX-7... -
Page 39: Slab Jacking & Concrete Pouring Components
PX-7 SLAB JACKING & CONCRETE POURING COMPONENTS SLAB JACKING & CONCRETE POURING COMPONENTS PX-7 Slab Jack Starter Kit PX-7 Slab Jack Starter Kit 200720 ITEM PART NUMBER DESCRIPTION 200709 CLAMP, PX-7 200719 METAL PACKER W/ SLEEVE 200721 PLASTIC PACKER W/ SLEEVE – 6 PACK... -
Page 40: Starter Pack, 3/8 Bang-In Pack
PX-7 SLAB JACKING & CONCRETE POURING COMPONENTS Starter Pack, 3/8 Bang-In Pack Starter Pack, 3/8 Bang-In Pack 202303 ITEM PART NUMBER DESCRIPTION 201544 CONCRETE POUR ADAPTER, PX-7 201545 PACKER, 3/8 OD REV 2.3: March 2, 2021...
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