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Troubleshooting
70
130001398_002_C0 - 09/2016 - © Leybold
6.1 Fault and Alarms Displayed at the Frequency Converter
Faults and alarms indicate problems in the frequency converter or in the
pump.
An alarm (warning) is indicated by a code on the data display and the flas-
hing ALM LED. The frequency converter output is not necessarily switched
off.
A fault is indicated by a code on the data display and the ALM LED is on.
The frequency converter output is always switched off immediately and the
motor coasts to stop.
To remove an alarm or reset a fault, trace the cause, remove it and reset the
frequency converter by pushing the Reset key on the operator or by cycling
the power supply.
This list includes the more important alarms and faults only.
Malfunction
Possible cause
Remedy
Repair
Pump is losing
lubricant
Lubricant leak is apparent:
Oil drain plug is leaky.
Oil sight glasses leaky.
Gear cover is leaky.
Puddle under the motor, leak in the seal.
No lubricant leak is apparent:
See malfunction “Lubricant in the pump
chamber”.
Drain lubricant, firmly screw in a new oil
drain plug with the gasket, fill in correct lubri-
cant quantity
Leybold Service.
Replace the O-ring of the gear cover.
Leybold Service, shutdown pump immediately.
See malfunction “lubricant in the pump
chamber”.
5.2
-
-
-
Oil gets too dark.
Oil has been used up.
Pump gets too hot.
Exchange the oil.
See malfunction “Pump gets too hot”; after
remedy of the malfunction, exchange the oil.
5.2
-
Lubricant in the
pump chamber.
Lubricant level is too high.
Lubricant is ejected from the system.
Pump is not standing horizontally.
Pump has a gas leak towards the outside.
Pump has an internal leak.
Piston rings are defective.
Drain the lubricant down to the correct level.
Check system.
Place the pump correctly.
Check to ensure that the oil-fill and oil drain
plugs are correctly seated. If required
replace the gaskets. Replace the O-ring of
the gearbox cover.
Leybold Service.
Leybold Service.
5.2
-
3.1
5.2
-
-
Pump does not
attain its
pumping speed.
Intake screen is clogged.
Motor incorrectly connected.
Speed is too low.
Pump system has a gas leak.
Valve of the pressure balance line does not close
(WHU only).
Clean intake screen.
Connect motor correctly.
Set up the correct speed.
Detect leak and seal it off.
Clean the valve or have it repaired.
5.3
3.4
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Содержание RUVAC WH 2500
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