Operation - Graco 309489 Instructions Manual

Pressure Relief Procedure
With the Evenflor control, its bypass valve, and the
pump Relax-A-Valve properly set, fluid pressure is
relieved from the pump and hose each time you re-
lease the gun trigger. Always engage the gun trigger
safety when you stop spraying. To relieve air pressure,
close the Evenflo regulators and open the bleed-type
master air valve.
WARNING
INJECTION HAZARD
If you suspect that the Evenflor system
is not properly set, or that pressure is
not fully relieved, 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, or moving parts, fol-
low 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 or install or clean the spray tips.
1. Engage the spray gun or dispensing valve safety
latch.
2. Close the pump air regulator.
3. Close the master bleed-type air valve (required).
4. Disengage the gun or dispensing valve safety
latch.
5. Hold a metal part of the gun/valve firmly to a
grounded metal waste container and trigger to
relieve fluid pressure.
6. Engage the safety latch again.
7. Insure the Relax-A-Valve is set in the automatic
position.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
8 309489

Operation

Never operate the pump with the air motor plate
removed. Moving parts in the piston can pinch or
amputate fingers.
Startup
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
The pump was tested in oil, and some oil was left in
the pump to protect it from corrosion. if the oil will
contaminate the fluid your are pumping, flush it out.
To Start the Pump:
1. Close the fluid drain valve (H).
2. Open the bleed–type master air valve (A).
3. Open the Evenflo
B
Fig. 2
4. Holding a metal part of the applicator firmly against
the side of a grounded metal pail, hold the trigger
open while slowly opening the air regulator (B).
While the applicator air is on, slowly open the
pump air regulator (A). If the pump does not
operate, release the trigger and close the control
valve (M) a quarter turn.
5. Repeat this process until the pump operates when
the applicator is triggered. Trigger the applicator
until flushing of the oil is complete.
6. Gradually adjust the pump and applicator air
pressure as needed during normal operation.
WARNING
WARNING
R
control knob (M) four full turns.
A
M
6412B