Goulds Pumps 3420 - IOM - Manual (Page 36)

2. Increased radial loads - Increases stress on the shaft
and increases loads on the bearings.
3. Heat build up - Vaporization of the pumpage may
cause the rotating parts to score or seize.
4. Cavitation - Damages the internal surfaces of the
pump.
OPERATING UNDER FREEZING
CONDITIONS
Exposure to freezing conditions, while the pump is idle,
could cause the liquid to freeze and damage the pump.
Liquid inside the pump should be drained. Liquid inside
cooling coils, if supplied, should also be drained.
SHUTDOWN
1. Slowly close the discharge valve.
2. Shut down and lock out the driver to prevent
accidental rotation.
s
! WARNING
Lock out driver power to prevent accidental rotation
and physical injury.
s
! WARNING
When handling hazardous and/or toxic fluids, proper
personal protective equipment should be worn. If the
pump is being drained, precautions must be taken to
prevent physical injury. The pumpage must be handled
and disposed of in conformance with the applicable
environmental regulations.
FINAL ALIGNMENT
1. Run the unit under actual operating conditions for a
sufficient length of time to bring the pump and driver
up to the normal operating temperature. 2. Check the alignment while the unit is at the normal
operating temperature per the alignment procedure in
Section 3.
3. Reinstall the coupling guard. Refer to the coupling
guard instructions in Appendix I.
32
3420 IOM 8/09