Hale MBP Booster - Manual (Page 36)

35 Silencer Series Booster Pump, p/n: 029-0020-83-0
Operation
❑
14. After completion of pumping procedures, gradually reduce the engine RPM
until it is at an IDLE speed. See heading “Post Operation procedure” on page
40.
15. Disengage the PTO per the PTO manufacturer’s instructions.
3.2 PUMP AND ROLL OPERATION
During pump and roll operation, it is necessary to slow the forward motion of
the apparatus to the PTO (Power Take-Off) manufacturer's recommended
engagement speed.
The following outlines a general pump and roll procedure:
1. Slow the apparatus to a safe PTO engagement speed as recommended by
the PTO manufacturer. Note that this speed may be STOPPED.
Note: Many PTOs must be engaged while the apparatus is STOPPED.
2. Engage the PTO (power take-off) per the PTO manufacturer’s instructions.
3. Verify the PUMP ENGAGED light is ON.
4. Open the valve between the tank and pump suction.
5. Observe pump discharge pressure and verify the pump pressure increases.
6. Prime the pump if necessary.
7. Open the discharge valves and commence operations.
3.3 RELIEF VALVE PROCEDURES
Be sure to select the correct procedure based on how the truck is equipped.
(See Figure 3-4: “TPM Relief Valve Control,” on page 36.) Some trucks may
utilize a governor in place of the relief valve.
1. Set the pressure indicator on the PMD control valve to a position slightly above
the normal operating pressure (even before water starts to flow).
2. After normal operating pressure has been achieved (as indicated on the master
pressure gauge while the pump is discharging water), slowly move the
adjusting hand wheel counterclockwise until the relief valve opens.