Operation - Graco 233500 Instructions-Parts List Manual

Pressure Relief Procedure
WARNING
The system remains pressurized until pressure is
manually relieved. To reduce the risk of serious
injury from pressurized fluid, accidental spray from
the gun, or splashing of any fluid, follow this proce-
dure whenever you
D Stop spraying
D Are instructed to relieve pressure
D Check or service any system equipment
D Install, clean, or change spray nozzles
1. Shut off the bleed-type air valve (B).
2. In a spray system, hold the gun (S) firmly against a
grounded metal pail and trigger the gun to relieve
the fluid pressure.
3. Place the drain tube (K) in a waste pail. Open the
drain/circulation valve (J) to relieve any fluid pres-
sure trapped in the system.
Starting and Adjusting the Pump
Read Toxic Fluid Hazard
1.
on page 5.
If lifting the pump, follow the Pres-
2.
sure Relief Procedure above.
3.

Operation

Be sure the pump is
properly grounded.
Read Fire and
Explosion Hazard
on page 4.
4. Check all fittings to be sure they are tight. Use a
compatible liquid thread sealant on all male
threads. Tighten the fluid inlet and outlet fittings
snugly. Do not overtighten the fittings.
5. Place the suction tube (L, if used) in the fluid to be
pumped.
6. Place the fluid hose (P) in a container.
7. Close the drain/circulation valve (J).
8. Close the pump air regulator (F). Open all bleed-
type master air valves (B, E).
9. If the fluid hose has a dispensing device, hold it
open while continuing with the following step.
Slowly open the air regulator (F) until the pump
starts to cycle. Allow the pump to cycle slowly until
all air is pushed out of the lines and the pump is
primed.
If you are flushing, run the pump long enough to
thoroughly clean the pump and hoses. Close the
air regulator. Remove the suction tube from the
solvent and place it in the fluid to be pumped.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
At the end of the work shift, flush the pump and relieve
pressure.
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