Hale 80FC - Manual (Page 59)

59 Pump Ends
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Pr ev en tive M ain te n an ce
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2. Increase the pump pressure up to normal operating pressure as indicated
on the master pressure gauge per normal operating procedures.
3. Turn the relief valve hand wheel counterclockwise until the valve opens.
The relief valve is open when the AMBER indicator light is ON and the pres-
sure begins to drop. (See Figure 3-2: “TPM / PMD Relief Valve Control” on
page 51.)
4. Turn the relief valve hand wheel clockwise. The pressure should return.
Cycle the relief valve a few times to ensure that the hand wheel turns freely.
Observe the pressure gauge and indicator light for proper valve operation.
5. Return the relief valve hand wheel and the apparatus to normal operational
condition.
Governor Test
If your system is equipped with an electronic governor, follow the manufac-
turer’s instructions for preventive maintenance.
Priming System
1. Tighten all pump caps, and close all pump valves.
2. Pull the primer control while you watch for a below-zero (0) reading on the
master intake gauge.
3. Continue operation for three (3) to five (5) seconds after the primer starts
flushing water through the pump to clear any possible dirt or slug (gum)
buildup.
4. Verify that the master intake gauge readings hold for approximately five (5)
minutes after you release the primer control. A drop of 10” Hg. in this 5
minute period is anticipated per NFPA 1901.
5. If air leaks are heard or the gauge bounces back to or above zero (0), the
pump or valves require service.
Valve Maintenance
Properly functioning valves are integral to the operation of the pump. Refer to
the separate valve manual for proper valve maintenance procedures.