MIN
MAX
MIN
MAX
MAX
MIN
Fig. 28:
Checking the lubricant level on the motor side
MAX
MIN
MAX
MIN
MAX
MIN
Fig. 29:
Checking the lubricant level on the vacuum side
Checking the lubricant level
1. Shut down the vacuum pump.
2. Wait for 1 minute and check the lubricant level at the sight glass.
– Check the lubricant level on the motor side and the vacuum side.
3. Make sure that the level is in the area at the middle of the inspection glass or up to 3 mm above it.
4. Top up lubricant as required.
5. Check the lubricant level daily during continuous operation, or prior to each activation.
7.4 Checking the cooling liquid level
NOTICE
Property damage as a result of inadequate cooling
Inadequate cooling may cause damage to the vacuum pump.
► Only use the cooling liquid prescribed by Pfeiffer Vacuum (Zitrec M 25).
► Evacuate the cooling chambers following repairs and fill cooling liquid.
The check is only required if a heat exchanger is installed
Check the cooling liquid level for screw pumps with a heat exchanger.
Required consumables
● Cooling liquid
Required tool
● Allen key,
WAF 10
Required aids
● Funnel (optional)
7.4.1 Approach for the Hepta 100 P
Checking the fill level
The correct fill level is between the MIN/MAX markings on the filler screw.
Prerequisite
● Vacuum pump switched off and cooled
MAX
MIN
MAX
MIN
MAX
MIN
Fig. 30:
Checking the cooling liquid level
Maintenance
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