MAINTENANCE
4-2 / Pierce Pumper
© 2019 Pierce Manufacturing Inc. All Rights Reserved.
Pump Maintenance
4-3.
Draining the Pumping System
NOTE:
If it is desired to retain water in the water tank, the Tank to Pump and Tank Fill valves should be left
in the closed position.
Every part of the water pump system must be drained if exposed to freezing temperatures.
1. Locate the lowest points on every plumbing line and the drain valve that opens it.
2. Remove caps.
AFTER opening air bleeder valves, remove all intake and discharge caps.
3. Open master pump drain.
Figure 4-1: Typical Master Pump Drains
POM0029, 0030
The master pump drain
will empty both the discharge and inlet manifolds of water when opened.
4. Open discharge line drains.
Locate each discharge line and open the drain valves.
5. Open intake line drains.
Locate each intake line and open the drain valves.
6. Open intake relief valve drain—on apparatus equipped with relief valves.
7. Open control valves.
Open all intake and discharge valves.
Freezing water can damage pipes, valves, primers, and gauges.
If you are moving a truck containing water outside when temperatures will approach freezing (32°F /
0°C), make sure that all fittings, valves, waterlines and caps have been opened or removed.
These include, but are not limited to: drain valves, discharge valves, intake valves, etc.
Following this recommendation could prevent damage to critical water system components and avoid
costly repairs.
Summary of Contents for Pumper
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