Fault Finding - Edwards EXS Series Instruction Manual

8. Fault finding

Table 21 Fault finding
Condition
Pump does not start up
Pump gets too hot
Motor power consumption is too high
Pump is too loud
Pump is losing lubricant
Oil gets too dark
Lubricant in the pump chamber
Pump does not attain its pumping speed
Fault Pump does not start up
Cause Motor incorrectly connected.
Remedy Connect motor correctly.
Cause Overtemperature switch or motor stator defective.
Remedy Contact us.
Cause Motor rotor defective.
Remedy Contact us.
Cause Pump has seized
‐ defective rotors, bearings or toothed gears
‐ pump restarted when it is still hot.
Remedy Wait for 60 minutes and restart the pump again. If the pump does not start, contact
us.
Fault Pump gets too hot
Cause Cooling water supply is not sufficient.
Remedy Make sure that the cooling water supply is sufficient.
Cause Cooling water lines are clogged.
Remedy Decalcify cooling water lines.
Cause Ambient temperature is too high or cooling air flow is obstructed.
Remedy Install the pump at a suitable place or ensure a sufficient flow of cooling air.
Cause Pump is operating in the wrong pressure range.
Remedy Check the pressure levels within the system.
Cause Gas temperature is too high.
Remedy Check system.
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