Spraying Systems MI-CU150A CU150A GunJet Spray Guns User Guide

Spraying Systems MI-CU150A CU150A GunJet Spray Guns

INTRODUCTION

The Model CU150A GunJet® is a heavy-duty, impact-resistant spray gun with a brass or aluminum body with a replaceable rubber body cover. The Model CU150A GunJet provides a variable liquid spray from a 50° hollow cone to a solid stream spray pattern by trigger control. The light trigger pull provides sensitive spray pattern control. The heat-resistant rubber body cover remains comfortable at high liquid temperatures. The Model CU150A GunJet will accommodate the 36467 and 36466 inlet swivel connectors with 3/4” garden hose thread (F), 1/2” (12 mm), 5/8” (16 mm) or 3/4” (19 mm) hose shank inlet connections. These connectors also have lock rings for locking the GunJet trigger in the spraying position.

FEATURES OF THE MODEL CU150A — GUN JET SPRAY GUNS

• The maximum pressure and temperature — 150 psi at 200° F(10 bar at 93° C).
• The flow rate at 100 psi (7 bar) can be changed from 10 to 22 GPM(38 to 83 l/min) by changing the Orifice Cap.
• Single piece cast brass or aluminum Body.
• Stainless Steel Valve Stem.
• Buna-N Valve Seat and O-ring Seals.
• Comfortable Hand Grip (handle to trigger).
• Easy operation… designed to reduce fatigue.
• Replaceable rubber Body Cover provides temperature insulation and protects spray gun from extensive abuse.
• Easy repair… all components are user serviceable.

WARNING AND SAFETY PRECAUTIONS

IMPORTANT: READ ALL INSTRUCTIONS BEFORE USING A SPRAY GUN

1. For water use only.
2. Before spraying, the gun must be pointed in direction of the arrow shown inside of the gun.
3. If gun assembly is equipped with a trigger lock ring, the ring must be released before the spraying operation is finished.
4. Proper clothing and eye protection should always be worn by operator and people in the spray areas.
5. DO NOT use with steam service.
6. DO NOT point a gun at any person or any part of the body. High-temperature liquids under spraying pressures can cause serious burns or injury.
7. DO NOT exceed 200° F (93° C) temperature.
8. DO NOT drop the gun on the trigger as this may actuate hot spray onto personnel.

INSTALLATION

1. Make sure all power is turned off to the pump. Attach GunJet to a hose that has a pressure and temperature rating meeting that of your anticipated maximum pressure and temperature.
2. Follow your pump and accessory equipment manufacturers’ recommendations for operation and safety.
3. Examine all connections, making sure they are of proper type and are secure and leakproof.
4. Holding the GunJet in a downward vertical position with arrows pointed away from the body, turn on the pump.
5. After checking that all safety precautions were taken, begin spraying by slowly “squeezing” the trigger.

MAINTENANCE

With proper care, your Model CU150A- 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 PLCU150A & PLBCU150A- ) **If it becomes necessary to disassemble this unit, follow these steps:**

1. Make sure all 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. Remove the GunJet from the hose.
4. Remove Rubber Cover (12) by pulling on its back end until it clears the body (6). Pull the front (orifice) end off of the front of the Body (6). This will expose Orifice Cap (1).
5. Unscrew and remove Orifice Cap (1)
6. Drill out and remove Rivet (9) and slip Trigger (10) out of the Body.
7. The remaining parts (2, 3, 4, 5) can be removed from Body (6) by gently pushing the Main Stem, Seat, and Pintel sub-assembly (2) towards, and out of, the front end of Body (6).
8. These parts (3, 4, 5) can now be removed from the Main Stem sub-assembly (2). If necessary, they should be repaired or replaced with new ones from the #AB63140-KIT repair kit or #AB63140-RBKIT rebuild kit, respectively.

ASSEMBLY PROCEDURE: (SEE FIGURE 1 AND PARTS LIST PLCU150A- & PLBCU150A- )

• A. Before reassembling the gun apply an O-ring lubricant such as Parker O-lube to the O-Ring (5).
• B. When reassembling the CU150A-AL GunJet (with aluminum body casting), apply Fel-Pro C5A or similar thread or anti-seize compound to the threads on Orifice Cap (1).

1. Place parts (3, 4, 5) in the correct order on to Main Stem sub-assembly (2).
2. Gently push this complete “assembly” in through the front end of Body (6) with Pintel point of stem sub-assembly towards the front of Body (6).
3. Slip Trigger (10) back into Body (6) with the slot on top of Trigger (10) engaging the slots on the Main Stem sub-assembly (2). Attach Trigger (10) to Body (6) with Binding Screw (CP36491-302SS) and Binding Stud (CP9034-2-302SS) included in the #AB63140-KIT Repair Kit or #AB63140-RBKIT Rebuild Kit.
4. Screw Orifice Cap (1) into the front end of Body (6) and tighten.
5. If rubber Cover (12) was completely removed from Body (6), slip handle part of Cover (12) over grip/handle of Body (6). (Note: Wetting Cover (12) and Body (6) with soapy water make assembly easier.) Next, pull front end of Cover (12) over front (orifice) end of Body (6). Finally, pull back the end of Cover (12) over back of Body

PARTS LIST

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