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Decommissioning
8 Decommissioning
8.1 Shutting down for longer periods
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
► Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
► Decontaminate affected parts before carrying out maintenance work.
► Wear protective equipment.
Procedure for a longer downtime of the turbopump (> 1 year)
1. Remove the turbopump from the vacuum system if necessary.
2. Change the operating fluid reservoir of the turbopump if necessary.
3. Close the high vacuum flange of the turbopump.
4. Evacuate the turbopump via the fore-vacuum connection.
5. Vent the turbopump via the venting connection with dry, oil-free air or inert gas.
6. Seal all flange openings with the original protective caps.
7. Store the turbopump upright with the high vacuum flange upwards.
8. Store the turbopump indoors only, within the specified temperature range.
9. In rooms with humid or aggressive atmospheres: Hermetically seal the turbopump together with a
8.2 Recommissioning
Risk of damage to the turbopump as a result of operating fluid aging after recommissioning
The shelf life of the operating fluid of the turbopump is limited. Aging of the operating fluid may lead
to the failure of the ball bearing and cause damage to the turbopump.
► Pay attention to when the operating fluid must be changed:
► Observe the maintenance instructions and inform Pfeiffer Vacuum Service.
Procedures for recommissioning the turbopump
1. Check the turbopump for pollution and moisture.
2. Clean the turbopump exterior with a lint-free cloth and a little isopropanol.
3. If necessary, arrange for Pfeiffer Vacuum Service to completely clean the turbopump.
4. Observe the total running time of the turbopump and if necessary, arrange for Pfeiffer Vac-
5. Change the operating fluid reservoirs of the turbopump.
6. Install the turbopump according to these instructions
7. Recommission the turbopump according to these instructions .
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WARNING
process media.
drying agent in a plastic bag.
● after maximum 2 years without operation,
● after maximum 4 years combined operation and downtimes.
uum Service to replace the bearing.
NOTICE
(see chapter "Installation", page
20).
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