Pierce Pumper, Руководство по эксплуатации и техническому обслуживанию

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Pierce Pumper / 4-3
MAINTENANCE
8. Purge primer.
Primer should be purged regularly in cold weather to prevent the primer from freezing.
9. Allow water to drain.
10. Close all valves.
NOTE: If your apparatus is equipped with a foam system, refer to the applicable foam system manual for
draining procedures.
4-4. Flushing the Drain Valves
4-4.1 Forward Flushing
Drain valves are the lowest point in the pump system. Dirt and debris in the water will settle in the drain valve bodies.
Flush each drain valve with clean water monthly or after pumping dirty or salty water. Flush drain valves to prevent
sediment from accumulating in the valve body and hurting proper operation of the drain valve.
1. Fill water tank.
Begin flushing procedure with a full water tank of clean, fresh water.
2. Cap all intake and discharge connections.
Cap all connections to hold the clean water from the tank in the pumping system.
3. Open all intake and discharge valves.
Open all control valves to allow fresh water to reach all points in the pumping system.
4. Open the tank-to-pump valve.
Open the tank-to-pump valve to flood the pumping system with clean water.
5. Open drain valves one at a time.
Open each drain valve. Keep open until a steady stream of water flows from the valve for 20 seconds. If no water
or reduced water flows, find out why water fails to drain and make a repair.
6. Close tank-to-pump valve.
Close the tank-to-pump valve to prevent any more water from entering the pumping system.
7. Open drain valves.
Open each drain valve again until remaining water is drained from the system.
8. Remove caps.
Remove intake and discharge caps.
9. Allow water to drain.
10. Close all intake and discharge valves.
11. Replace caps.
Replace intake and discharge caps.
12. Close drain valves.
13. Refill water tank.