Hale SMR - Manual (Page 42)

Operating Procedures
3-8 Stainless Max Series Pumps
WARNING !
DO NOT ADVANCE THE THROTTLE UNLESS THE "OK TO PUMP" INDI-
CATOR IS ON.
9. Verify the pump panel shift indicator light is on.
10. Activate the priming pump by pulling the control handle located
on the pump panel or pressing the push button.
The departmental manual for pumping should specify the correct
RPM for priming. In general, priming should be done at idle with
an engine speed of about 1,000 to 1,200 RPM.
11. Monitor the intake and discharge master gauges. The pump is
primed when the intake reading falls below zero (0), and the
discharge pressure starts to increase. Water may also discharge
to the ground.
Running the engine at speeds higher than 1,200 RPM during
priming is not recommended. It will not improve the priming
operation but may cause damage to the pump.
CAUTION
IF DISCHARGE GAUGE READING DOES NOT INCREASE, THE INTAKE
GAUGE READING DOES NOT FALL BELOW ZERO, OR THE PRIMING
PUMP DOES NOT DISCHARGE WATER TO THE GROUND WITHIN 30 TO
45 SECONDS, DO NOT CONTINUE TO RUN THE PRIMING PUMP. STOP
THE PUMP AND CHECK FOR AIR LEAKS OR POSSIBLE PROBLEMS.
SEE SECTION 5: “TROUBLESHOOTING.”
12. Gradually open the discharge valve until water emerges in a
steady stream. Then open the other discharge valves to the
desired setting.
13. Open the engine throttle gradually until the desired pressure or
flow is achieved.
As the throttle is opened, increase the pressure gauge reading
with engine speed. If the engine speed increases without an
increase in pressure, the pump is nearing cavitation. Reduce the
flow from the pump to maintain pressure or reduce the pressure
(throttle) to maintain flow.
Note: Cavitation is discussed in detail under heading “Cavitation,”
beginning on page 3-13.