6 Operation
6.1 Putting the vacuum pump into operation
WARNING
Danger of poisoning due to toxic process media escaping from the exhaust pipe
During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape
freely into the air. There is a risk of injury and fatality due to poisoning in processes with toxic process
media.
► Observe the pertinent regulations for handling toxic process media.
► Safely purge toxic process media via an exhaust line.
► Use appropriate filter equipment to separate toxic process media.
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g. increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
► Route the exhaust line without shut-off units.
► Observe the permissible pressures and pressure differentials for the product.
► Check the function of the exhaust line on a regular basis.
Before switching on
1. Check the operating fluid in the sight glass.
2. Compare the voltage and frequency specifications on the motor rating plate with the available
mains voltage and frequency.
3. Protect the vacuum pump from sucking in contaminates using suitable measures.
4. Check the operating fluid at regular intervals.
5. Check the exhaust connection for free passage (max. permissible pressure: 1500 hPa absolute).
6. Actuate the shut-off units so that the shut-off units open before or at the same time as the pump
starts up.
6.2 Switching on the vacuum pump
CAUTION
Risk of injury from entrapment of body parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. A risk
exists of minor injury to fingers and hands (e.g., hematoma), from direct contact with the vacuum
flange.
► Maintain sufficient distance to the vacuum flange during all work.
► Safely disconnect motor from the mains.
► Secure the motor against re-start.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C. If access to the vacuum pump is unrestricted, there is a danger of burns
due to contact with hot surfaces.
► Install suitable touch protection if the vacuum pump is accessible to untrained persons.
► Allow the vacuum pump to cool down before carrying out any work.
► Contact Pfeiffer Vacuum for suitable touch protection in system solutions.
Operation
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