Spraying Systems GunJet 60 Manuale utente

60 & 60W GunJet®

Spray Gun

USER GUIDE

spray.com

MI-60 & 60W

CONTENTS

CONTENTS............................................................................................................ 2

INTRODUCTION.................................................................................................... 3

WARNINGS & PRECAUTIONS ............................................................................... 3

INSTALLATION...................................................................................................... 6

MAINTENANCE..................................................................................................... 7

INTRODUCTION

The Model 60 series GunJet®is a heavy-duty, impact resistant spray gun with a

sturdy nylon handle and trigger guard. The Model 60 GunJet is a high-pressure

spray gun, which remains responsive and easy to operate even at maximum

flow and capacity conditions. The light trigger pull provides positive control.

The heat 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

60W incorporates a continuous “weep” feature to minimize the change of

freezing and, with the exception of the valve seat subassembly, the 60 and

60W GunJet spray guns are identical and require the same installation and

operating procedures. The Model 60 and 60W GunJet spray guns will

accommodate standard Spraying Systems Co. accessories for both the inlet and

the outlet connections within the accessories’ pressure and temperature

limitations.

Features of the Model 60-GunJet spray guns:

•Operating pressure range up to 2500 psi (173 bar).

•Flow capacities to 6 gpm (23 l/min) with 90 psi (6 bar) pressure drop.

•Maximum recommended temperature 300°F (150° C).

•Single piece, forged brass inlet body (for 60 & 60W).

•Stainless steel inlet body (for 60 SS & 60W SS).

•Stainless steel shut-off needle.

•Bronze-filled PTFE valve seat.

•Viton stem seal with PTFE back-up ring.

•Short hand grip (handle to trigger).

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 MODEL 60 HIGH PRESSURE GUNJET SPRAY GUN.

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 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.

6. DO NOT use damaged, perforated, or weakened fluid hose.

7. DO NOT use a GunJet with a faulty or damaged Trigger Lock.

8. DO NOT operate a spray gun if there are any leaks from the packings,

fittings, hoses, etc. Fluids that 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 Model 60 GunJet at all times. Grasp

spray gun firmly with both hands. If an extension is used, grasp the

extension. (Insulated extension if spraying hot liquids.)

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 gun after each spray period using the same safety

precautions as used during spraying operations. Always use the lowest

possible pressure for flushing.

8. DO keep gun clean and dry to allow for positive grip.

9. DO use GunJet 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!

INSTALLATION

1. Before installing GunJet® to hose, select WashJet®tip or, if desired, an

appropriate extension and WashJet nozzle for your application. Install

on gun with nozzle positioned for your particular spraying needs and

tighten.

2. 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.

3. 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.

4. Make sure all power to the pump is turned off 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.

5. Before turning on the pump hold the GunJet in downward vertical

position pointed away from body and familiarize yourself with the

operation of the Trigger Lock (21).

6. Make sure Trigger Lock (21) is in locked position. Do not turn on the

pump power or operate spray gun if Trigger Lock is not operating

properly.

MAINTENANCE

With proper care, your Model 60 series 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.

DISASSEMBLY PROCEDURE:

(See Figure 1 and parts list PL 60 & 60W, PL B60 & B60W or PL 60-3/8-SS)

If it becomes necessary to disassemble this unit, follow these steps:

1. Make sure all air, electrical, and liquid lines to the pump are turned off.

2. Release all the pressure and liquid (from the hose to GunJet) by

operating Trigger until fluid ceases to flow.

3. Set Trigger Lock (21) in locked position.

4. Remove gun from hose.

5. Remove 7 Screws (1).

6. Remove Right Hand Housing (2), Trigger Lock (21) and Lock

Spring Ring (20).

7. Remove Body and Trigger as a subassembly (3) thru (19) from Left

Hand Housing (2).

8. Remove Trigger (18) and Trigger Guide (19).

9. Remove #6 Burr (15), Spring (14), Stem Nut (13).

10. Using the hex on the Body (5) as a back-up wrenching surface, loosen

Cap (3) and Packing Screw (12).

11. Remove Cap (3) and Valve Seat (4).

12. Holding Packing Screw (12) unscrew Body (5) from Stem Assembly

(6) thru (12).

13. Remove Gasket (11) from Packing Screw (12).

14. Remove Packing Screw (12), Cup Packing (9), Washer (8), and

Main Spring (7).

15. If required, Trigger Guide (19) may be removed from Trigger (18) by

pressing or driving out Roll Pin (16).

16. If required, Roll Pin (17) may be removed from Trigger (18) by pressing

or driving out.

ASSEMBLY PROCEDURE:

(See Figure 1 and parts list PL 60 & 60W, PL B60 & B60W or PL 60-3/8-SS)

1. Install Main Spring (7) over Main Stem (6).

2. Install Washer (8) onto Main Stem (6).

3. If Cup Packing (9) and Back-up Ring (10) were not previously removed

from Packing Screw (12) apply a drop of light oil on Cup Packing and

carefully thread Packing Screw (12) over threads of Main Stem (6).

4. If Cup Packing (9) and Back-up Ring (10) were previously removed

from Packing Screw (12) slide Packing Screw (12) and Back-up Ring

(10) onto Main Stem (6). Apply a thin coat of light oil on Cup Packing

(9) and with flat side of Cup Packing (9) facing Trigger (18) carefully

screw Cup Packing over threads of Main Stem (6). Important: Cup

Packing (9) must be installed in correct direction (see Figure 1a).

5. Install Valve Seat (4) and Cap (3) loosely onto Body (5).

6. Insert stem assembly into Inlet Body (5); begin to thread Packing

Screw (12) into Inlet Body (5).

7. Tighten Cap (3) and Packing Screw (12).

8. Assemble Trigger (18), Trigger Guide (19) and Roll Pin (16) and (17) if

previously disassembled. Roll Pin (16) slot should face toward

threaded end of Trigger Guide (19). Lubricate area where Roll Pin (16)

contacts Trigger Guide (19) with white grease or equivalent.

Figure 1

Figure 1a

9. Thread flat side of hex Stem Nut (13) onto threaded end of Main Stem

(6) until approximately 3/16” of threaded stem projects from recessed

surface of Stem Nut (13).

10. Install #6 Burr (washer) (15), Spring (14), and end of Main Stem (6)

which has hex Stem Nut (13) onto Trigger Guide (19). Do not allow hex

Stem Nut (13) to drift from preset position on Main Stem (6).

11. Tighten hex Stem Nut (13) using a back-up wrench on the flats of

Trigger Guide (19).

12. Place Body Trigger Assembly (3) thru (19) in Left Hand Housing (2)

making sure Roll Pin (17) is engaged in hole in Left Hand Housing (2).

13. Install Lock Spring Ring (20) in Left Hand Housing (2).

14. Place Trigger Lock (21) in Left Hand Housing (2).

15. Install Right Hand Housing (2) and 7 Screws (1).

Caution: Do not over tighten screws.

16. Be sure Trigger Lock (21) is in locked position before attaching to

pump.

REPLACEMENT OF PACKING CUP (9):

Steps 1 through 14 of Disassembly Procedure and steps 1 through 16 of

Assembly Procedure.

TRIGGER ADJUSTMENT PROCEDURE:

When correctly adjusted there should be no Stem (6) travel when Trigger Lock

(21) is in the locked position and trigger operation is attempted. A visual check

can be made by detecting no Stem Nut (13) movement. Adjust Main Stem (6)

to engage Trigger Guide (19) approximately 3/16” which should result in 1/8”

to 5/32” of stem travel when mounted in plastic housing. (See steps 9, 10, and

11 of Assembly Procedure.)

DATA SHEETS

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