NOTICE:
Cavitation can cause damage to the internal surfaces of the pump. Ensure net positive suction
head available (NPSH
A
) always exceeds NPSH required (NPSH
3
) as shown on the published
performance curve of the pump.
Operation under freezing conditions
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that will freeze that is inside
the pump and any auxiliary equipment. Failure to do so can cause liquid to freeze and damage
the pump. Note that different liquids freeze at different temperatures. Some pump designs do
not drain completely and may require flushing with a liquid that doesn't freeze.
5.11 Shut down the pump
WARNING:
Precautions must be taken to prevent physical injury. The pump may handle hazardous and/or
toxic fluids. Proper personal protective equipment should be worn. Pumpage must be handled
and disposed of in conformance with applicable environmental regulations.
1.
Slowly close the discharge valve.
2.
Shut down and lock out the driver to prevent accidental rotation.
5.12 Deactivate the i-ALERT®3 Equipment Health Monitor
NOTICE:
Always deactivate the health monitor when the pump is going to be shut down for an extended
period of time. Failure to do so will result in reduced battery life.
Disengage the snap fit of the i-ALERT®3 using a flat head tool as shown below:
Figure 40: Disengage the battery from the sensor when shutting the pump for an extend-
ed period of time
5.11 Shut down the pump
64
Model 3700i API610 / Type OH2 Installation, Operation, and Maintenance Manual