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Operation
333309E 19
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Engage the gun trigger lock, if present.
2. See F
IG. 2. Turn off the bleed-type master air valve
(E) and air to supply pumps, if present.
3. Disengage the gun trigger lock, if present.
4. Hold a metal part of the gun firmly to a grounded
metal waste container. Trigger the gun to relieve
fluid pressure.
5. Engage the trigger lock, if present.
6. Open all fluid drain valves (W) in the system, having
a waste container ready to catch the drainage.
Leave the drain valve(s) open until you are ready to
spray again.
7. If you suspect that pressure has not been fully
relieved after following the steps above, check the
following:
a. The spray tip may be completely clogged. Very
slowly loosen the air cap retaining ring to relieve
pressure in the cavity between the ball/seat
shutoff and the plugged tip. Clear the tip orifice.
b. The gun fluid filter or the fluid hose may be com-
pletely clogged. Very slowly loosen the hose
end coupling at the gun and relieve pressure
gradually. Then loosen completely to clear the
obstruction.
c. After following the steps above, if the spray tip
or hose still seems completely clogged, very
slowly loosen the tip guard retaining nut or hose
end coupling and relieve pressure gradually,
then loosen completely. With tip removed, trig-
ger gun into waste container.
Prime the Pump
1. Engage the gun trigger lock. Remove tip guard and
spray tip from gun (L). Refer to gun manual. See
Related Manuals, page 3.
2. Close gun air pressure regulator (D) and pump air
pressure regulator (H) by turning knobs counter-
clockwise reducing pressure to zero. Close
bleed-type master air valve (E). Also verify that all
drain valves are closed.
3. Check that all fittings throughout system are tight-
ened securely.
4. Position pail close to pump. Suction hose is 4 ft
(1.2 m) long. Do not stretch hose tight; let it hang to
assist fluid flow into pump.
NOTE: Loose suction hose fittings allow air to enter into
the proportioning pump resulting in the fluid ratio to be
altered.
5. Standard Procedure: Disconnect the fluid hoses
from the mix manifold inlet, taking note of which
hose was connected to which valve.
Procedure for Polyester Model 24W609: Open the
return valves on both A and B pump outlets.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.