NOTICE
Vacuum pump damage caused by overpressure
Mixing up the connections causes overpressure overload. The vacuum pump can be started only
against max. 1 bar differential pressure between inlet and outlet; otherwise the motor jams and sus-
tains damage.
► Make sure that the distributor is installed correctly on the diaphragm heads, before connecting
the vacuum pump to the vacuum equipment.
► Before commissioning, make completely sure that the pressure side pressure is below the per-
missible limit.
NOTICE
Property damage due to incorrect polarity
Incorrect or excessive supply voltage will destroy the motor.
► Always observe the motor rating plate specifications.
► When connecting the supply cable, observe the colored marking on the corresponding wires.
► Always provide a suitable mains fuse.
Risks during operation
WARNING
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
process media.
► Decontaminate affected parts before carrying out maintenance work.
► Wear protective equipment.
WARNING
Risk of explosion from reactive, explosive or other hazardous gas / air mixtures.
Uncontrolled inlet of gas at the flushing gas nozzle leads to sparks generated mechanically following
diaphragm rupture, hot surfaces or to explosive gas / air mixtures in the vacuum system caused by
static electricity.
► If necessary, use inert gas for supplying the flushing gas in order to avoid a potential ignition.
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
Risk of poisoning due to toxic process gases escaping
For intake pressures > 500 hPa, process gas may escape from the flushing gas nozzle.
► If necessary, use an extraction line.
Safety
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