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10
Preventative Maintenance
It may be possible to extend the life of the pump and prevent a pump down situation by establishing a
preventative maintenance program. This may be done by periodically performing a list of activities and recording
certain information to be able to spot potential problems before they become serious. It is recommended that
these activities be performed after the filter cleaning procedure so that the information will be taken from the
same baseline each time. All or part of the following activities could provide the foundation for a preventative
maintenance program.
1. Record the time it takes for the
pump to prime and come to
a stable operating condition.
Increased priming times
can indicate a problem. See
Troubleshooting section, on
page 14.
2. Observe the sound coming from
the pump housing. A substantial
change in sound from inside the
pump is a clue that something
in the circulation system has
changed.
3. Observe the sound coming from
the motor. Motor bearings rarely
fail without first becoming noisy.
4. Observe the temperature of the motor. The motor is designed to carry the pump load without building
up excessive heat. An increase in normal operating temperatures may indicate a potential problem. A
thermocouple placed at the motor ventilation discharge opening may be used to monitor motor temperature. It
normally takes about 1 hour for the motor temperature to stabilize. See Troubleshooting section, on page 14.
5. Record any flow and pressure readings on the circulation system meters and gauges. See Troubleshooting
section, on page 14.
6. Record supply voltage and amps. Supply voltage can change throughout the day depending on other
electrical loads in the area. Changes in supply voltage will affect the amp draw and water output of the pump.
7. Inspect the floor around the pump to ensure there are no indications of leaks. Address leaks immediately.
A mechanical seal leak is indicated by water dripping between the motor and the motor adapter. A mechanical
seal leak can result in a failed motor bearing.
8. Inspect the exterior pump components for any sign of a structural failure. Most structural failures will start with
a hairline crack that originates from a corner where two different shapes intersect.
9. Verify that the support brackets or hangars for the suction and discharge piping are continuing to fully support
the weight of the piping.
10. Motor bearings are a permanently lubricated/sealed type and do NOT need grease or oil applied, even in the
presence of grease fittings. Applying grease or oil can damage the bearing seal allowing water to enter the
bearing causing premature bearing failure.
EQ SERIES® High Performance Commercial Pump Installation and User' s Guide
Figure 8
Towards
Motor
Correct Locking Ring START Position
Towards
Motor
Correct Locking Ring LOCKED Position
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