NOTICE
Damage to the turbopump due to nonpermissibly fast pressure rise during venting
Non-permissibly high pressure rise rates place a significant load on the rotor and the magnetic bear-
ing of the turbopump. During venting very small volumes in the vacuum chamber or the turbopump,
there is a risk of uncontrollable pressure rises. This causes mechanical damage to the turbopump,
including potential failure.
► Observe the prescribed maximum pressure rise speed of
15 hPa/s
.
► Avoid manual and uncontrolled venting of very low volumes.
► Where necessary, use a venting valve from the Pfeiffer Vacuum range of accessories.
Risks during maintenance
WARNING
Danger of death from electric shock during servicing and maintenance work
The device is only free of voltage with the mains plug disconnected and the turbopump at a standstill.
► Switch off the main switch prior to starting any work.
► Wait for the turbopump to come to a standstill (speed = 0)
► Disconnect the mains plug from the device.
► Secure the device against accidental restart.
WARNING
Health risk and potential environmental damage due to toxic contaminated parts or devices
Toxic process media result in contamination of the devices or parts thereof. During maintenance work
there is a health risk due to contact with these poisonous substances. The non-permitted disposal of
toxic substances results in environmental damage.
► Take appropriate safety precautions and avoid health risks or environmental hazards due to toxic
process media.
► Decontaminate the affected parts before carrying out maintenance work.
► Wear protective equipment.
NOTICE
Malfunction due to changing the connection configuration
The pumping station connections are pre-configured at the factory. If the control lines on the connec-
tor are mixed up, this causes the pumping station to malfunction or fail.
► When removing components, note their original layout for subsequent re-assembly.
► Make a note of the accessories configuration and important setting values from the DCU before
disassembly of the pumping station or components.
Risks during recommissioning
NOTICE
Damage to the turbopump due to excessive aging of the operating fluid after recommission
ing
The storage capacity of the operating fluid in the turbopump is limited. Excessive aging of the operat-
ing fluid can result in the ball bearings failing and cause damage to the turbopump.
► Observe the usable service life of the operating fluid:
● Without operation, maximum of 2 years,
● Following operating and standstill times, 4 years in total.
► Observe the maintenance instructions and inform Pfeiffer Vacuum Service.
Safety
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