Cause The ambient temperature is too high.
Remedy Cool down ambient temperature
Cause The cooling air supply is insufcient or is too hot.
Remedy Check the distance from the object which could affect air ow
Cause The process gas is too hot or the maximum continuous operating pressure has
been exceeded.
Remedy Check the ambient of pumping medium and maximum inlet pressure
Cause The fan is not working or is not connected.
Remedy Check the fan connection or contact us
Fault The pump has failed to achieve the required performance
Cause Gas ballast may be selected.
Remedy To close gas ballast, turn the control a quarter turn so that the valve snaps shut.
Use this setting to achieve the best possible vacuum. If the pump has been used to
pump condensible vapours or is to pump a large chamber that has been exposed to
atmospheric air (water vapour), it may be necessary to run for at least an hour on gas
ballast.
Cause If the electrical supply voltage is more than 10% below the
lowest voltage specied on the user inter
- face panel, the
pump may operate but deliver a degraded vacuum performance.
Remedy Use correct power supply
Cause There is a leak in the system.
Remedy Check full system for vacuum leakage
Cause Tip seals may need further run‑in, typically 24 hours, with some requiring up to a
maximum of 100 hours.
Remedy Keep the pump running for additional time, for speed up tip seal run-in, you can open
GB valve
Cause The pressure measurement technique or gauge head is unsuitable or gives an
incorrect indication of pressure.
Remedy Check or calibrate measure equipment
Cause The vacuum ttings are dirty or damaged.
Remedy Replace the tting
Cause The inlet strainer is blocked.
Remedy Clean or replace the strainer
Cause The connecting pipelines are too long or too small in diameter, conductance.
Remedy Use hoses with the bigger diameter or contact us for calculation your system
Cause There is high pressure or a blockage in the exhaust line.
Remedy Check exhaust pipeline
64 300668736_002_C7 - © Leybold
Fault nding
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