Hale HFM - Manual (Page 12)

Caution: If clutch does not shift easily through its 180 degree travel, do
not force it, as this may cause serious damage to the pump
transmission. Back the clutch off and reengage it.
4. Pull out primer valve handle. When discharge gauge registers pressure, open
discharge line and release primer handle.
5. Accelerate engine and adjust discharge valves to obtain desired pressure and
volume. Caution: Do not try to pump a large volume of water, as suction line from
the tank will not handle it.
Pumping From Draft
1. Position chassis as dose to water source as possible and set parking brake.
Shift truck transmission to neutral position.
Caution: Make sure that truck transmission shift quadrant lock is used.
Place wheel chocks in front and behind tires. The pump will exceed the
rated capacity on a ten foot vertical lift, however, as the lift increases,
performance and capacity will decrease.
2 Attach hard suction hose to the suction nipple on pump and attach the hose
strainer to the other end. Be sure suction hose gasket and inlet strainer are in
place and all drain valves are dosed.
3. For best results, submerge suction strainer two feet or more in the water and
avoid pumping large volumes from shallow water.
4. Maintain engine idle speed, pull out primer handle, and slowly engage clutch in
pump transmission.
Caution: If clutch does not shift easily through its 180 degree travel, do not
force it, as this may cause serious damage to the pump transmission.
Instead, back the clutch off and re engage it.
5. When discharge gauge registers pressure, open discharge line, and release
primer handle. Caution: Care must be exercised not to operate pump without
water as this can seriously damage pump.
6. Accelerate engine and adjust discharge valves to obtain desired pressure and volume.
7. When suction hose must be carried over some obstruction such as a bridge rail, or if for
any reason the hose does not slope from pump to the water, the best results will be
obtained by priming with the discharge valve wide open
.