Operation and Maintenance Instructions for Spray Guns
Operation
1. Connect air supply hose at handle of gun. 5/16 air hose x 25 ft. max. length is recommended. Also,
only use CAT high flow quick disconnects and avoid using any restrictive fittings for the air supply to
the gun.
2. Connect a pressurized and regulated fluid supply to the gun fluid inlet.
3. Fluid flow can be controlled using the fluid control knob, this restricts flow by limiting needle travel. It
is best to control fluid flow by the proper selection of orifice size that gives the desired material flow rate,
with the fluid pressure adjusted between 3 and 9 psi. Then use the fluid control knob to fine tune flow rate.
4. Fan width can be adjusted using the fan control knob. Turning the knob clockwise narrows the fan.
Maintenance
IMPORTANT! Routine cleaning and maintenance is essential to insure proper gun operation.
Several states prohibit spraying solvent into the atmosphere and require the use of covered gun cleaner.
1. If a gun cleaner is being used, connect and clean the gun in the gun cleaner according to the
manufactures instructions.
2. If a gun cleaner is not being used:
Remove air cap and clean separately using clean solvent.
Connect a pressurized solvent supply to the fluid inlet, trigger the gun allowing solvent to flow thru the gun until clean.
NOTE: Gun disassembly is not recommended for normal cleaning and maintenance.
Gun disassembly and reassembly instructions:
Have repair kit # 10-106 available before gun disassembly.
Disassembly
To remove nozzle carrier (4) and air cap adapter (6):
1. Remove the air cap (1), fluid tip (2), fluid nozzle body (4) and needle (13).
2. Remove needle seal cartridge (23).
3. Loosen locknut (8) and remove fluid inlet (9).
4. The fluid nozzle carrier (4) and air cap adapter (6) will now slide foward from the gun handle (11).
Reassembly
1. Install new o-rings (5) and (7) on the air cap adapter (6).
2. Install air cap adapter into gun body (11).
3. Install the locknut (8) onto the fluid inlet (9) as far as possible.
4. Install a new fluid inlet seal (10) into the recess area on the nozzle carrier (4) inlet port.
5. Slide the nozzle carrier (4) into the air cap adapter (6) as far as possible. Be sure the nozzle carrier
extends into the hole at the back of the gun head. Install the needle seal cartridge (23) but do not tighten.
6. Rotate the nozzle carrier (4) until the fluid inlet port in the nozzle carrier is aligned with the threaded hole
in the gun body (11). While in this position, insert the fluid inlet (9) and tighten firmly.
7. Tighten needle seal (23) to approx.12 ft-lbs torque.
8. Tighten fluid inlet (9) to approx. 25 ft-lbs torque.
9. Tighten locknut (8) to approx. 33 ft-lbs torque.
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