Hale RSD - Manual (Page 47)

47 RSD Series Single-Stage PTO Pumps
p/n: 029-0020-92-0
Pr ev en tive M ain te n an ce
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2. Increase pump pressure up to 150 PSI (10 BAR), as indicated on the mas-
ter pressure gauge, per your normal operating procedures.
3. Turn the relief valve handwheel counterclockwise until the relief valve opens
and the AMBER light illuminates. The master pressure gauge should drop
at least 5 to 10 PSI (0.35 to 0.7 BAR). (See Figure 3-3: “TPM / PMD Relief
Valve Control” on page 41.)
4. Turn the control valve handwheel clockwise then counterclockwise a few
times to ensure that the handwheel turns freely. Observe the master pres-
sure gauge and indicator light for proper valve operation.
5. Reset the relief valve to its normal operational setting.
Governor Test
If your apparatus is equipped with an electronic governor, follow the manufac-
turer’s instructions for preventive maintenance.
Priming System Test
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. during this 5
minute period is anticipated per NFPA 1901 standards.
5. If air leaks are heard or the gauge bounces back to or above zero (0), the
pump or valves require service.
Pump Shift Warning Indicator Lights
1. Switch to non-pumping operations and verify the warning indicators are
OFF. See Section 3 “Basic Operation” on page 27.