6 Operation
6.1 Commissioning the vacuum pump
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C.
► Provide suitable touch protection.
NOTICE
Property damage from using non-approved lubricant
Attainment of product-specific performance data is not ensured. If non-approved lubricants are used,
all liability and warranty claims against Pfeiffer Vacuum are excluded.
► Use only lubricants approved by Pfeiffer Vacuum.
► Use alternative, application-specific lubricants only following consultation with Pfeiffer Vacuum.
NOTICE
Lubrication of a dry-running screw pump
Lubricating the compression chamber can cause damage to the screw pump.
► Never lubricate the compression chamber with oil or grease.
NOTICE
Property damage from contaminated gases
Pumping gases that contain contamination damages the vacuum pump.
► Use suitable filters or separators from the Pfeiffer Vacuum range of accessories, to protect the
vacuum pump.
Before switching on
1. Inspect the screw pump for visible damage and ensure that the screw pump is only operated
when in a sound condition.
2. Check the fill level of the lubricant on the motor side and vacuum side. Top up lubricant as re-
quired.
3. If a plate heat exchanger is installed, check the cooling liquid level and top up with cooling liquid
as required.
4. Compare the voltage and frequency specifications on the motor rating plate with the available
mains voltage and frequency.
5. Make sure that the suction chamber is free from all foreign matters.
6. Protect the screw pump from sucking in contamination using suitable measures (e.g. dust filter).
7. Make sure that the shut-off units on the pressure side open before starting the pump.
8. Open the cooling water flow and ensure the flow rate.
9. If necessary, vent the cooling chambers.
10. With a supply of sealing gas, open the sealing gas feed and set the sealing gas pressure.
6.2 Switching on the vacuum pump
CAUTION
Health hazard from increased noise emission
Remaining in the close proximity of the vacuum pump for a sustained period of time may cause hear-
ing damage.
► Ensure adequate sound insulation.
► Wear hearing protection.
Operation
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