Hale Q Series Muscle - Manual (Page 56)

 Basic Operation
56 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
 Some vehicles drive the speedometer from the front wheel of the chassis.
In this case, the speedometer will not register after shifting to the PUMP posi-
tion. See the chassis manual for details.
6. Open the hydrant. Bleed off the air from the suction hose.
7. Open the suction valve to allow water flow into the pump.
8. Open the appropriate valve to expel air or prime the pump, if so equipped. Also
see heading “Pumping From Draft” on page 58.
Figure 4-2: Pump Operator’s Panel
9. Note the discharge and intake pressures, then gradually open the engine throttle
until the master discharge gauge indicates the desired pressure.
10. Set the automatic relief valve according to your fire department policy, if so
equipped. If your fire department does not have a policy, see heading “TPM
Operation from a Hydrant” on page 57.
CAUTION!
DO NOT REDUCE THE PRESSURE ON THE INTAKE GAUGE BELOW DEPARTMENT
LIMITS. SERIOUS DAMAGE TO THE WATER MAIN COULD RESULT.
11. If the master intake gauge shows a vacuum before the desired discharge pres-
sure or flow is achieved, you are receiving all the water that the suction piping
(hydrant) can supply.