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Operation - First Time Startup
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, electric
shock, or moving parts, follow the Pressure Relief
Procedure whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D install or clean the spray tip.
1. Lock the spray gun trigger safety.
2. Shut off the air to the feed pumps.
3. Turn off the air to the proportioning pump.
4. Close the gun manifold needle valves.
5. Unlock the trigger safety, trigger the gun to relieve
pressure, and lock the trigger safety again.
6. If possible, allow the heater to cool before opening
the drain valves. This prevents the resin from
frothing.
7. Open both fluid filter drain valves, having a
container ready to catch the draining fluid.
8. If you are working on any part of the heater, shut
off the main electrical power to the heater.
9. If you suspect that the spray tip/nozzle or hose is
completely clogged or that pressure has not been
fully relieved after following the steps above, very
slowly loosen the hose end coupling and relieve
pressure gradually, then loosen the coupling
completely. Now clear the tip/nozzle or hose
obstruction.
I .
Prime the sprayer.
WARNING
ELECTRIC SHOCK HAZARD
Be sure the heater and heated hose
circuit breakers (63) are shut off to
reduce the risk of electric shock. See
Fig. 19, page 18.
NOTE: For each step, if no figure drawing is referred
to, see Fig. 1, on page 8, to locate the parts men-
tioned in the step.
1. Close the feed pump air inlet valves or regulators
(8).
2. Close the heater drain valves (61).
3. Close the needle valves (64) of the spray gun
manifold. See Fig. 15.
CAUTION
Do not overtighten the needle valves to avoid crack-
ing the seals.
RES HOSE
64
Fig. 15
4. Fill the displacement pump packing nut 2/3 full with
IPO (ISO Pump Oil), supplied.
5. Be sure the proportioning pump fluid intake valves
(321) are open.
6. Open both main air line shutoff valves (1).
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of overpressurizing the supply
drum or container, which could rupture the drum
and cause serious injury and property damage
follow these precautions.
D Do not operate the Air Dryer with any part
removed.
D Do not operate with the restrictor nipple (14)
removed. These nipples limit the volume of air
to the Air Dryer.
D Do not operate with either pressure relief valves
(12) removed. These valves relieve air pressure
to the drums if it exceeds 5.5 psi (38 kPa, 0.38
bar).
D Do not operate with the metal power guard (A)
removed from the oil filter or desiccant dryer.
ISO HOSE
04879
308144
15
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