Maintenance
7.3 Changing the operating fluid
Risk of poisoning from contact with harmful substances
The operating fluid and parts of the turbopump may contain toxic substances from pumped media.
► Decontaminate affected parts before carrying out maintenance work.
► Prevent health hazards or environmental impacts with adequate safety precautions.
► Observe the operating fluid safety data sheet.
► Dispose of the operating fluid according to locally applicable regulations.
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
► Observe the application instructions and precautions.
► Do not allow tobacco products to come into contact with the operating fluid.
You can find the safety data sheet in the
Prerequisites
● Turbopump switched off
● Turbopump cooled down
● Vacuum system vented to atmospheric pressure
● Electric supply interrupted
● All cables removed from electronic drive unit
● All openings sealed with original protective covers and screw plugs, if needed
7.3.1 Draining the operating fluid
Required tools
● Allen key, size 5
● Calibrated torque wrench (tightening factor ≤ 1.6)
Required aids
● Suitable vessel for collecting the operating fluid
Fig. 25:
Procedure
1. Place a suitable vessel under the operating fluid pump of the turbopump.
2. Unscrew the lower drain plug from the operating fluid pump.
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WARNING
WARNING
Examples: Draining operating fluid for the standard and U versions
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