6 Operation
6.1 Putting the vacuum pump into operation
WARNING
Risk of explosion in the medium to be pumped as a result of increased pressure
With installation on the exhaust side, there is a risk of the exhaust pressure of the vacuum pump ex-
ceeding the atmospheric conditions. The ignition temperature of the medium to be pumped is lowered
in the suction chamber.
If the ignition temperature of the medium to be pumped falls below a temperature of +135 °C, there is
a risk of explosion, and consequently serious injury.
► Ensure that the ignition temperatures of the medium to be pumped is maintained above a tem-
perature of +135 °C at 2000 hPa abs.
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 contamination 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).
6.2 Switching on the vacuum pump
CAUTION
Risk of injury from entrapment of body parts
During installation and maintenance, the motor may start up uncontrolled. There is a risk of minor in-
jury 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 connect the motor to the mains during installation.
► Safely disconnect the motor from the mains prior to maintenance.
► Secure the motor against re-start.
Operation
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