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Operation
Pressure Relief Procedure
WARNING
FLUID INJECTION HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci-
dentally. To reduce the risk of an injury from acci-
dental spray from the gun, splashing fluid, or
moving parts, follow the
Pressure Relief Proce-
dure
whenever you:
D
are instructed to relieve the pressure,
D
stop spraying,
D
check or service any of the system equipment,
D
or install or clean the spray nozzle.
1.
Shut off the air supply to the pump.
2.
Close the bleed-type master air valve (required in
your system).
3.
Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
4.
Open the drain valve (required in your system),
having a container ready to catch the drainage.
5.
Leave the drain valve open until you are ready to
spray again.
If you suspect that the spray nozzle or hose is com-
pletely clogged, or that pressure has not been fully
relieved after following the steps above,
very slowly
loosen the nozzle retaining ring or hose end coupling
and relieve pressure gradually, then loosen completely.
Now clear the nozzle or hose.
Flush Pump Before Using
Pumps are tested with lightweight oil which is left in to
protect the pump parts. To prevent contamination of
fluids, flush the pump with a compatible solvent before
using. If the pump will supply a circulating system,
circulate the solvent until the system is thoroughly
flushed.
WARNING
Be sure your entire system is properly grounded
before flushing. Refer to
Fire or Explosion Haz-
ard
on page 3. Relieve pressure, remove the tip
from the gun, then hold a metal part of the gun
firmly to the side of a grounded metal pail, and use
the lowest possible pressure to flush.
