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WARNINGS & PRECAUTIONS 

IMPORTANT: READ ALL INSTRUCTIONS BEFORE USING SPRAY GUN 
THIS IS A HIGH-PRESSURE DEVICE WHICH SHOULD ONLY BE USED IN A 

PROPERLY ENGINEERED SYSTEM. THIS SPRAY GUN SHOULD BE OPERATED 

ONLY BY TRAINED OPERATORS AND KEPT OUT OF REACH OF CHILDREN. 

PLEASE READ THE FOLLOWING INSTRUCTION SHEETS BEFORE ATTEMPTING 

TO OPERATE THE PW4000A- OR PW4000AW- HIGH PRESSURE GUNJET SPRAY 

GUNS. 
HEED ALL THESE WARNINGS or serious and permanent injury may result. 
GENERAL WARNING FOR HIGH PRESSURE SPRAY GUNS:  IF THE OPERATING 

PRESSURE IS BETWEEN 100 PSIG (0.69 MPA) AND 3200 PSIG (22.06 MPA), 

THEN AN EXTENSION OR WAND SHOULD BE USED THAT SEPARATES THE 

DISCHARGE NOZZLE A MINIMUM OF 29.5 INCHES (750 MM) FROM THE 

TRIGGER MECHANISM.  DO NOT ASSEMBLE DISCHARGE NOZZLE DIRECTLY 

INTO THE SPRAY GUN. 
IF THE OPERATING PRESSURE IS BETWEEN 3200 PSIG (22.06 MPA) AND 5000 

PSIG (34.48 MPA), THEN AN EXTENSION OR WAND SHOULD BE USED THAT 

SEPARATES THE DISCHARGE NOZZLE A MINIMUM OF 4.0 FEET (1.22 M) FROM 

THE TRIGGER MECHANISM. DO NOT ASSEMBLE DISCHARGE NOZZLE DIRECTLY 

INTO THE SPRAY GUN. 

1.

 

DO NOT

 aim gun at any person or any part of the body. Fluids under 

high pressure can penetrate the human skin and can cause severe 

injury, possibly resulting in amputation or death. Hot liquids and 

chemicals can also cause burns or injury. If any part of the body comes 

in contact with the spray stream, immediately consult a physician. 

2.

 

DO NOT

 at any time place hands or any other part of the body in front 

of spray nozzle or tip. 

3.

 

DO NOT

 alter equipment in any manner; if repairs are necessary, use 

only genuine factory repair parts supplied by Spraying Systems Co. 

4.

 

DO NOT

 exceed maximum operating pressure of the lowest rated 

accessory item within the spray system even though some of the 

accessories have a higher maximum pressure rating. 

5.

 

DO NOT

 leave equipment under pressure unattended at any time. 

Relieve pressure by shutting off power to pump, turning off the liquid 

supply to the pump, and actuating Trigger until all fluid ceases to flow; 

then position Trigger Lock to the locked position.

 

 

Summary of Contents for GunJet PW4000A

Page 1: ...PW4000A GunJet Spray Gun USER GUIDE spray com MI PW4000A...

Page 2: ...l PW4000AW incorporates a continuous Weep feature to minimize the chance of freezing and with the exception of the valve seat sub assembly the PW4000A and PW4000AW GunJet spray guns are identical and...

Page 3: ...CHARGE NOZZLE A MINIMUM OF 4 0 FEET 1 22 M FROM THE TRIGGER MECHANISM DO NOT ASSEMBLE DISCHARGE NOZZLE DIRECTLY INTO THE SPRAY GUN 1 DO NOT aim gun at any person or any part of the body Fluids under h...

Page 4: ...dopt a secure body stance prior to and during spray operation to safely control the high reactionary force of this unit 3 DO impress on other people in the spraying area the importance of obeying stri...

Page 5: ...ed the maximum operating pressure to be used When spray gun is being used in a possible explosive or flammable environment a grounded type hose should be used 3 Follow your pump and component parts ma...

Page 6: ...move the five Screws 19 and Housing 18 See Figure 1 Page 9 6 Lift out all internal parts leaving all parts assembled Trigger Lock 17 should remain in Housing 18 7 Clamp the Valve Body 2 and remove Ret...

Page 7: ...DAMAGE THE O RINGS SEE FIGURE 2 5 Insert new Stem 9 through Retaining Screw Sub Assembly 4 thru 7 inserting rounded end through O ring 7 6 Install and tighten Retaining Screw Sub Assembly and Stem int...

Page 8: ...8 Figure 1 Figure 2...

Page 9: ...9 PARTS LIST...

Page 10: ...10...

Page 11: ...11...

Page 12: ...North Avenue and Schmale Road P O Box 7900 Wheaton IL 60187 7901 Tel 1 800 95 SPRAY Intl Tel 1 630 665 5000 Fax 1 888 95 SPRAY Intl Fax 1 630 260 0842 www spray com MI PW4000A Spraying Systems Co 201...

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