Graco 3A0410D Manual De Usuario
Operation
12
3A0410D
Operation
Pressure Relief Procedure
1.
Shut off the air supply to the pump.
2.
Open the dispensing valve, if used.
3.
Open the fluid drain valve (F) to relieve fluid pres-
sure. Have a container ready to catch the drainage.
sure. Have a container ready to catch the drainage.
Flush the Pump Before First Use
The pump was tested in water. If water could contami-
nate the fluid you are pumping, flush the pump thor-
oughly with a compatible solvent. See Flushing and
Storage, page 13.
nate the fluid you are pumping, flush the pump thor-
oughly with a compatible solvent. See Flushing and
Storage, page 13.
Start and Adjust the Pump
1.
2.
Check fittings to be sure they are tight. Use a com-
patible liquid thread sealant on male threads.
Tighten fluid inlet and outlet fittings securely.
patible liquid thread sealant on male threads.
Tighten fluid inlet and outlet fittings securely.
3.
Place the suction tube (if used) in fluid to be
pumped.
pumped.
NOTE: If fluid inlet pressure to the pump is more than
25% of outlet working pressure, the ball check valves
will not close fast enough, resulting in inefficient pump
operation.
25% of outlet working pressure, the ball check valves
will not close fast enough, resulting in inefficient pump
operation.
4.
Place the end of the fluid hose into an appropriate
container.
container.
5.
Close the fluid drain valve (F).
6.
Back out the air regulator knob (C), and open all
bleed-type master air valves (B, D).
bleed-type master air valves (B, D).
7.
If the fluid hose has a dispensing device, hold it
open.
open.
8.
Slowly increase air pressure with the air regulator
until the pump just starts to cycle. Allow the pump to
cycle slowly until all air is pushed out of the lines
and the pump is primed.
until the pump just starts to cycle. Allow the pump to
cycle slowly until all air is pushed out of the lines
and the pump is primed.
NOTE: Use lowest possible air pressure to prime, just
enough to cycle the pump. If the pump does not prime
as expected, turn air pressure DOWN.
enough to cycle the pump. If the pump does not prime
as expected, turn air pressure DOWN.
9.
If you are flushing, run the pump long enough to
thoroughly clean the pump and hoses.
thoroughly clean the pump and hoses.
10. Close the bleed-type master air valve (B).
Follow the Pressure Relief Procedure
whenever you see this symbol.
whenever you see this symbol.
This equipment stays pressurized until pressure is
relieved manually. To help prevent serious injury from
pressurized fluid, such as splashing in the eyes or on
skin, follow the Pressure Relief Procedure whenever
you stop pumping and before you clean, check, or ser-
vice the equipment.
relieved manually. To help prevent serious injury from
pressurized fluid, such as splashing in the eyes or on
skin, follow the Pressure Relief Procedure whenever
you stop pumping and before you clean, check, or ser-
vice the equipment.
NOTICE
Excessive fluid inlet pressure can reduce diaphragm
life.
life.