Start And Adjust The Pump; Pump Shutdown - Graco SaniForce 3250 Operation

Operation

Start and Adjust the Pump

1. Confirm that the pump is properly grounded. See
Grounding, page 8.
2. Check and tighten all pump clamps and fluid
connections before operating the equipment.
Replace worn or damaged parts as necessary.
3. Connect a flexible fluid suction line (G) from the fluid
to be pumped to the pump fluid inlet.
4. Connect the flexible fluid outlet line (L) to the pump
fluid outlet and route the line to the end container.
5. Close the fluid drain valve (J).
6. Turn the air regulator (C) knob to the lowest air
pressure setting and open the bleed-type master air
valve (B).
7. If the fluid outlet line (L) has a dispensing device,
hold it open while continuing with the following step.
14
8. To prime the pump, slowly increase air pressure
with the air regulator (C) until the pump starts to
cycle. Do not exceed the maximum operating air
pressure as listed in the Technical Specifications,
page 16. Allow the pump to cycle slowly until all air
is pushed out of the fluid lines and fluid exits the
outlet line (G).
NOTE: If the fluid inlet pressure to the pump is more
than 25% of the outlet working pressure, the ball check
valves will not close fast enough, resulting in inefficient
pump operation. Inlet fluid pressure higher than 25% of
the outlet working pressure will also shorten diaphragm
life. Approximately 3–5 psi (0.02–0.03 MPA, 0.21–0.34
bar) fluid inlet pressure should be adequate for most
materials.

Pump Shutdown

At the end of each work shift, perform the Pressure
Relief Procedure, page 13.
Flush the pump if necessary. See Flushing and
Storage, page 15.
3A6779D