Hale RSD - Manual (Page 46)

❑ Preventive Maintenance
46 RSD Series Single-Stage PTO Pumps
p/n: 029-0020-92-0
3. After the pump is completely drained, replace all caps and close all valves.
Salt Water, Contaminated Water, or Foam Solution
1. Flush the pump and suction hoses by using water from a hydrant or other
CLEAN water source.
2. After pumping foam through the pump, flush as above until all foam residue
is flushed from the system.
3. Drain the gearbox cooler, if installed.
4.4 WEEKLY
Weekly maintenance consists of testing the relief valve system or governor, the
priming system and the pump shift warning indicator lights. If testing criteria is
not met, refer to Section 5 “Troubleshooting” on page 59, for corrective mainte-
nance procedures.
❑ Test the relief valve or governor system - see page 46
❑ Test the priming system - see page 47.
Establish and HOLD prime control for about three (3) to five (5) seconds to
flush fresh water through the priming pump.
Note: DO NOT apply lubricant the primer pump vanes or vane slots. Lubricant and
cold water produces a gummy residue that renders the unit inoperative.
❑ Test the pump shift warning indicator lights - see page 47
❑ Perform valve maintenance - see page 48
❑ Check and clean the intake strainers - see page 48
❑ Verify all gauges are in working order - see page 48
❑ Operate pump controls - see page 48
❑ Check auxiliary engine - see page 49
Relief Valve Test
When the relief valve is not in operation, maintain a setting above the normal
operating pressure. (See Figure 3-3: “TPM / PMD Relief Valve Control” on
page 41.) Also refer to NFPA 1901 standards.
1. Prepare to pump from the onboard water tank with the discharge valve back
to the water tank open less than 1/2 way. Also see heading 2a.3 “Pressure
and Relief Valve Control” on page 22.