HALE AP, Technical Manual

Page: 35 / 177

23
3.4. Pumping From Draft Verification Operations
This test is ONLY conducted to verify a pump can now pump from draft when the fault repaired
prevented the failed pump from pumping from draft. Perform the following test ONLY when re-
quired to verify a pump repair has corrected a failure to pump from draft (lakes, ponds, streams
and other non-pressurized water supplies). This test is intended to be conducted under con-
trolled conditions and NOT from a randomly available/selected water source.
NOTE
This test is intended to be conducted using a known lift under controlled conditions.
The pump can ONLY draw 100% of its rated capacity with less than a 10 ft vertical
lift. As the lift increases to above 10 ft, the pump capacity will be reduced and a con-
clusive test can NOT be conducted.
A. Prepare truck to pump from draft.
Position apparatus at test pit or other predetermined testing water 1.
source.
Bring truck to a complete stop. 2.
Apply truck parking brake. 3.
Shift truck transmission into NEUTRAL. 4.
Engage pump PTO. 5.
Shift road transmission into proper gear (usually DRIVE). 6.
Check indicator lights to see if pump is in gear, check speedometer, and 7.
listen as pump goes in gear.
Momentarily press accelerator to ensure shift is complete. 8.
DO NOT LEAVE THE CAB OR ATTEMPT TO PUMP UNTIL ALL OK TO PUMP LIGHTS IN
THE CAB ARE ILLUMINATED. SEE FIGURE 7.
ONLY after completing ALL previous steps, exit driving compartment. 9.
DO NOT OPEN THE THROTTLE UNLESS THE GREEN INDICATOR LIGHT IS ON.
SEE FIGURE 8. FAILURE TO WAIT FOR THE ILLUMINATED GREEN INDICATOR MAY RE-
SULT IN EQUIPMENT DAMAGE OR FAILURE.
Verify pump panel shift indicator light is on. 10.
Open Tank-to-Pump valve. (Prevent pump from running dry as quickly as 11.
possible.)
Set wheel chocks. 12.
Complete all hose connections and close all discharges. 13.
a) Ensure intake hose is free of humps and sharp bends and no part of hose is high-
er than pump intake inlet. (Air pockets in the intake hose may cause loss of prime
or erratic pump action, and may reduce pump capacity.)
b) Ensure all intake connections are tight and all discharge valves are closed.