Instruction book
48 6996 0224 30
4.2 Starting
Procedure:
Check oil level and oil condition.
Switch on the voltage.
To avoid excessive energy consumption and damage to the vacuum pump the
maximum allowed starting frequency is 6 starts per hour.
For more frequent operation, let the pump run continuously and control the vacuum
demand by a pitot valve on the pump inlet.
4.3 During operation
The operator must apply all relevant safety precautions. See section Safety
precautions during operation.
Also consult section Problem solving.
Regularly check the oil level and the oil condition. The oil level should be in the middle of the oil sight glass.
See instructions in sections Preventive maintenance schedule and Oil and oil filter change.
4.4 Stopping
We recommend running the unit off-line for typically 30 minutes with closed inlet valve but open gas ballast
prior to switching off. This will condition the oil ready for the next start-up. If the gas stream was heavily
contaminated with water vapour, a longer period of running the unit off-line can only extend oil lifetime.
If the pump is stopped before all the condensed vapour has been disposed off, it will be deposited by
gravity separation from the oil on the bottom of the oil after about 8 to 10 hours.
Before restarting, check for any water in the oil tank-leads to an increase of the oil level-through the oil
viewer (high water handling capability versions only). If there is water, follow the instructions from
paragraph 5.1.
In case of long machine downtime, check section Taking out of operation.
4.5 Taking out of operation
The operator must apply all relevant safety precautions. See section Safety
precautions during operation.
Also consult section Problem solving.
Procedure
Switch off the voltage and disconnect the vacuum pump from the mains.
Drain the oil.
Recycle the oil, oil filter and exhaust filter(s) in accordance with local environmental regulations for
waste disposable and recycling.
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