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Pump Tanks Chapter 4: Operation 17 of 36
4-3 Stand-by Pump Usage
All stand-by pumps should be checked intermittently to make sure they are operational for
when they may be required for usage.
Single Stand-by pump:
1. Open the suction valve fully and lock down.
2. Open the discharge valve slowly until it is equal to the pump it will be replacing.
3. Shut down the pump being replaced and make sure the suction and discharge valves
are fully closed.
Dual Stand-By Pump
1. Open the discharge manifold valve on the proper side of the divider for the
pump being replaced. Be sure the opposite discharge manifold valve is fully
closed.
2. Open the suction valve on the proper side of the divider for the pump being
replaced. Be sure the opposite suction valve is fully closed.
3. Open the discharge valve slowly until it is equal to the pump it will be
replacing.
4. Shut down the pump being replaced and make sure the suction and discharge
valves are fully closed.
4-4 Shut-down
1. Prepare all process and related equipment for shutdown.
2. Shut down all pumps
3. Close the water makeup valve.
4. If you are draining the system, open the 2” drain valve.