Draining lubricant
1. Shut down the vacuum pump and allow it to cool if necessary.
2. Vent the vacuum pump to atmospheric pressure via the intake side.
3. Unscrew the filler screws.
4. Place the collection receptacle underneath.
5. Unscrew both drain screws.
6. Fully drain the lubricant.
7. Screw the drain screws back in.
– Tightening torque:
max. 32 Nm
7.3.2 Filling up lubricant
Consumable
● Lubricant
Required tools
● Ring spanner, WAF 17 mm
● Calibrated torque wrench (tightening factor ≤ 2.5)
Required aids
● Funnel (optional)
Procedure
1. Pour in lubricant on both sides.
– Fill level: approx. 5 mm below the middle of the inspection glass.
2. Screw in the filler screws again.
– Tightening torque:
max. 32 Nm
7.4 Changing sealing oil
NOTICE
Damage to the vacuum pump due to incorrect procedure when filling sealing oil
Disassembly of the lubricator causes leakage in the system. The lubricant expands when the roots
pump heats up, which could cause lubricant to leak if overfilled.
► Use only the lubricator’s filler flap to fill up.
► While the roots pump is cold, fill the lubricator
no more than halfway
.
Consumable
● Lubricant
Required tools
● Open-end wrench, WAF 17
● Calibrated torque wrench (tightening factor ≤ 2.5)
Maintenance
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