Hale RSD - Manual (Page 40)

❑ Operation
40 Section 3: Operating
Hale Products, Inc., Nov.2005, Rev-A
3.6 PUMP AND ROLL
IMPORTNAT !
DURING PUMP AND ROLL OPERATION, IT IS NECESSARY TO SLOW THE FOR-
WARD MOTION OF THE APPARATUS TO THE PTO MANUFACTURER'S RECOM-
MENDED 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’s recommendations.
Note: Most PTOs must be engaged while the apparatus is stopped. Only a "Hot
Shift" PTO can be engaged while the apparatus is rolling.
2. Engage the PTO.
3. Verify the PUMP ENGAGED light is ON. Also see Figure 3-1: “Driver’s
Compartment Indicator Lights” on page 28.
4. Open the valve between the tank and pump suction.
5. Observe pump discharge pressure and verify that the pump pressure
increases.
6. Prime the pump, if necessary.
7. Open the discharge valves and commence operations.
3.7 RELIEF VALVE PROCEDURES
Be sure to select the correct procedure based on how the truck is equipped.
(See Figure 3-3: “TPM / PMD Relief Valve Control” on page 41.) Some trucks
may utilize a governor in place of the relief valve.
Standard Relief Valve Procedures
Note: Be sure to select the correct procedure, according to the relief valve in your
system.
1. Increase the engine RPM to the desired pump operating pressure while
reading the discharge pressure gauge.