Spraying Systems GunJet 60-21580 User manual

60-21580 GunJet®
Spray Gun
USER GUIDE
spray.com
MI-60-21580

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CONTENTS
CONTENTS............................................................................................................ 2
INTRODUCTION.................................................................................................... 2
WARNINGS & PRECAUTIONS ............................................................................... 3
INSTALLATION...................................................................................................... 5
MAINTENANCE..................................................................................................... 6
PART LIST ........................................................................................................... 10
INTRODUCTION
The Model 60-21580 GunJet® Spray Gun is a heavy-duty, impact resistant spray gun with a
sturdy nylon handle and trigger guard. The Model 60-21580 GunJet is a high-pressure
spray gun which remains responsive and easy to operate even at maximum now and
capacity conditions. The light trigger pull provides positive control. The heal resistant
handle remains comfortable even at high temperatures. A special trigger lock feature locks
in the "off" position to prevent accidental discharge and retracts flush into the handle
when the gun is in use. The Model 60-21580 GunJet will accommodate standard Spraying
Systems Co. accessories for the inlet connection, within the accessories' pressure and
temperature limitations.
Features of the Model 60-21580 GunJet Spray Guns:
•Adjustable spray pattern... from a fine mist to full cone and solid stream
sprays by pulling back on trigger
•Operating pressure range - up to 250 psi (17 bar)
•Flow capacities to 16 GPM (61 l/min) in solid stream position
•Maximum recommended temperature - 300° F (150° C)
•Single piece forged Brass inlet body - 3/8" NPT(F) or 3/8" BSPT(F)
inlet connection
•Bronze-filled PTFE valve seat
•Viton®stem seal
•Short hand grip (handle to trigger)
•Rubber bumper protects spray tip from damage

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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 60-21580 HIGH PRESSURE GUNJET SPRAY GUN.
SPRAYING SYSTEMS CO. STRONGLY RECOMMENDS THE USE OF APPROPRIATE
SAFETY EQUIPMENT WHEN WORKING WITH POTENTIALLY HAZARDOUS
CHEMICALS. THIS EQUIPMENT INCLUDES, BUT IS NOT LIMITED TO, A
PROTECTIVE HAT, SAFETY GLASSES OR FACE SHIELD, CHEMICAL RESISTANT
GLOVES, LONG-SLEEVED SHIRT, LONG PANTS, AND A CHEMICAL RESISTANT
APRON. REMEMBER TO READ THE CHEMICAL MANUFACTURER'S LABEL AND
FOLLOW ALL DIRECTIONS.
HEED ALL THESE WARNINGS or serious and permanent injury
may result.
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 hand or any other part of the body in front
of a 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. If a
pump is used, relieve line pressure by shutting off power to pump,
turning off the liquid supply to the pump, and actuating the trigger
until all fluid ceases to flow. If gun assembly is equipped with trigger
lock ring; then position trigger lock to the “locked” position.
6. DO NOT use damaged, perforated, or weakened fluid hose.
7. DO NOT use a GunJet® with a faulty or damaged Trigger Lock.

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8. DO NOT operate a spray gun if there are any leaks from the packings,
fittings. hoses. etc. Fluids which are under high pressure can penetrate
skin, cloth. etc. and cause serious injury.
9. DO NOT touch any metal parts of the gun or accessories when
spraying hot liquids or severe injury can occur.
10. DO NOT handle a spray gun without a tip or nozzle any differently
than one with a tip or nozzle. Even with the tip or nozzle removed, the
spray gun can discharge a large volume of liquid at a high velocity.
SAFETY SHOULD ALWAYS BE OBSERVED:
1. DO use a “two-handed” control of GunJet at all times. Grasp spray gun
firmly with both hands.
2. DO adopt 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 strict safety precautions for everyone’s safety.
4. DO develop a habit of shutting off the power to the pump, relieving
fluid pressure from gun and hose by actuating trigger until all fluid
ceases to flow, and setting the trigger lock in the locked position,
before attempting to remove the tip, nozzle, gun or any part of the
gun…or when gun is not in use.
5. DO check operation of Trigger Lock before each spray period. Trigger
Lock must hold the Trigger to its forward position. (Adjust if necessary
- see section, Trigger Adjustment Procedure.)
6. DO carefully check and tighten threaded connections regularly. Make
them secure and leak proof.
7. DO flush fun after each spray period, using the same safety
precautions as used during spraying operations. Always use the lowest
possible pressure of flushing.
8. DO keep gun clean and dry to allow for positive grip.
9. DO use spray gun in a well ventilated area and make sure spray gun is
grounded properly when used in a possibly explosive or inflammable
environment. A grounded type hose should be used.
IMPORTANT: In case of the slightest appearance of skin penetration
from spray, CONSULT A PHYSICIAN IMMEDIATELY!!

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INSTALLATION
1. Make sure all power is turned off to the pump. Attach GunJet to
high-pressure hose with rating to meet or exceed 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.
2. Follow your pump and component parts manufacturer's
recommendations for operation. but in any case, do not exceed
the pressure or temperature of the lowest rated component within
the system.
3. Make sure all power is turned off to the pump, and there is no
pressure in any part of the system. Examine all connections, making
sure they are of the proper type and are secure.
4. Before turning on the pump and holding the GunJet in downward
vertical position pointed away from body, familiarize yourself with the
operation of the Trigger Lock (23).
5. Make sure Trigger Lock (23) is in "locked” position. Do not turn on
the pump power or operate spray gun if Trigger Lock is not operating
properly.

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MAINTENANCE
With proper care, your 60-21580 GunJet will give you reliable service. To
maintain this performance, parts should be inspected regularly and replaced
when necessary with genuine Spraying Systems Co. parts. (Parts kit AB60-
21580-Kit).
DISASSEMBLY PROCEDURE: (See Fig. 1 and Parts List)
1. If it becomes necessary to disassemble this unit, follow these steps:
2. Make sure all air, electrical and liquid lines to the pump are turned off.
3. Release all the pressure and liquid (from the hose to GunJet by
operating Trigger (21) until fluid ceases to flow.
4. Set Trigger lock (23) in locked position.
5. Remove gun from hose.
6. Remove 7 screws (1).
7. Remove Right Hand Housing (2), Trigger Lock (23) and Lock Spring Ring (24).
8. Remove Inlet Body and Trigger as a sub-assembly (3) thru (24) from
left Hand Housing (2).
9. Holding Trigger (21) firmly in place, loosen Stem Nut (18) and remove
items (3) thru (18) from Trigger Guide (22).
10. Remove Stem Nut (16) from Main Stem/Seat Holder
sub-assembly (6, 7, 8).
11. Using the hex on the Body (5) as a back-up wrenching surface, loosen
Cap Sub-Assembly (3) and Packing Screw (15).
12. Remove Cap Sub-Assembly (3) and Tip (4).
13. Remove items (6) thru (22).
14. While holding Main Stem/Seat Holder Sub-Assembly (6, 7, 8), remove
Pintle (6) and PTFE Seat (7).
15. If required, Trigger Guide (22) may be removed from Trigger (21) by
pressing or driving out Roll Pin (19).
16. If required, Roll Pin (20) may be removed from Trigger (21) by pressing
or driving out.

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FIGURE 1

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ASSEMBLY PROCEDURE: (See Figure 1 and Parts List)
1. Secure flat side of PTFE Seat (7) into Main Stem/Seat Holder
Sub-Assembly (6, 7, 8) with Pintle (6).
2. Install Stem Guide (9) and Spring (10).
3. Install Seat Retainer (11) onto Main Stem/Seat Holder
Sub-Assembly (6, 7, 8).
4. Place Seat Plug Gasket (14) onto Packing Screw (15).
5. Packing Cup:
−5A. If Packing Cup (12) and Back-up Ring were not previously
removed from Packing Screw (15), apply a drop of light oil
on Packing Cup (14) and carefully "screw" Packing Screw (15) over
threads of the Main Stem/Seat Holder Sub-Assembly (6, 7, 8).
−5B. If Packing Cup (12) and Back-up Ring were previously removed
from Packing Screw (15), apply a thin coal of light oil on Packing Cup
(12) and with flat side of Packing Cup (12) facing Trigger (21), "screw"
Packing Cup (12) over threads of the Main Stem/Seal Holder Sub-
Assembly (6, 7, 8). Slide Back-up Ring (13) onto Main Stem/Seat
Holder Sub-Assembly (6, 7, 8). Slide Seat Plug Gasket (14) & Packing
Screw (15) onto Main Stem/Seat Holder Sub-Assembly (6, 7, 8).
IMPORTANT: Packing Cup (12) must be installed in correct direction,
see Fig. 1a.
6. Using the hex on the Body (5) as a back-up wrenching surface, screw
Packing Screw (15) with Gasket (14) while pushing items (6) thru (13)
into Body (5). Tighten securely.
7. Thread flat side of Stem Nut (16) onto threaded end of Main
Stem/Seat Holder Sub-Assembly (6, 7, 8) until approximately 1/8" of
threaded stem projects from Nut (16).
8. Assemble Trigger (21), Trigger Guide (22) and Roll Pins (19) & (20) if
previously disassembled. Roll Pin (19) slot should face toward
threaded end of Trigger Guide (22). Lubricate area where Roll Pin (19)
contacts Trigger Guide (22) with white grease or equivalent.
9. Install #6 Burr (washer) (18), Spring (17), onto Main Stem/Seat Holder
Sub-Assembly (6, 7, 8). Do not allow Stem Nut (16) to drift from
position on Main Stem/Seat Holder Sub-Assembly (6, 7, 8).

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10. Tighten Stem Nut (16) while holding Trigger Guide (22) firmly in place.
11. Place Inlet Body-Trigger Assembly (5) thru (22), in left Hand Housing
(2) making sure Roll Pin (20) is engaged in hole in left Hand
Housing (2).
12. Install lock Spring Ring (24) in left Hand Housing (2).
13. Place Trigger lock (23) in left Hand Housing (2).
14. Adjust Trigger (21) as required. See ''Trigger Adjustment Procedure"
below.
15. Install Right Hand Housing (2) and 7 Screws (1).
CAUTION: Do not over tighten screws.
16. Replace Tip (4), Cap Sub-Assembly (3) onto Body (6).
17. Be sure Trigger lock (23) is in locked position before attaching to
pump. Refer to “Warnings and Safety Precautions" and "Installation
Instructions" (Pg. 4).
REPLACEMENT OF PACKING CUP (12):
With the stroke adjusting tool (24) in place from step 5 above, Steps 1 thru 12
of "Disassembly Procedure", Pg. 5 and step 6 thru 18 of "Assembly Procedure",
Pg. 8.
TRIGGER ADJUSTMENT PROCEDURE:
When correctly adjusted there should be no Main Stem/Seat Holder Sub-
Assembly (6,7,8) travel when Trigger lock (23) is in the "locked" position and
trigger operation is attempted. A visual check can be made by detecting no
Stem Nut (16) movement. Adjust Main Stem/Seat Holder Sub-Assembly (6, 7, 8)
to engage Trigger Guide (22) approximately 3/16" which should result in 1/8"
to 5/32" of Stem travel when mounted in plastic housing (See steps 8, 10 & 11
of "Assembly Procedure", Pg. 8-9).

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PART LIST

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12
North Avenue and Schmale Road,
P.O. Box 7900,
Wheaton, IL 60187
-7901
Tel: 1.800.95.SPRAY
Intl. Tel: [phone]
Fax: 1.888.95.SPRAY
Intl. Fax: [phone]
www.spray.com
MI
-60-21580 © Spraying Systems Co. 2019