10
Installation
5.3 Connecting the exhaust side
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Choose the cross-section of the exhaust line to be at least the size of the nominal
connection diameter of the vacuum pump's exhaust connection.
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Piping to the pump must be suspended or supported.
– Forces from the piping system must not be allowed to act on vacuum pumps.
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Lay piping from the pump, sloping downward so that no condensate can flow
back into the pump; otherwise fit a condensate separator.
– If an air trap is created in the system then a device for draining condensation
water must be provided at the lowest point.
5.4 Connecting to the mains power supply
Depending on the pump type, different motor versions are possible:
• Three phase motor without switch and mains cable (with 3 PTC).
• Three phase motor with switch and mains cable (without 3 PTC).
CAUTION
High pressure in the exhaust line!
Danger of damage to the seals and danger of the pump bursting.
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Install the line without shut-off valves on the exhaust side.
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If there is danger of a build-up of excess pressure (> 1500 mbar abs.) in the lines,
observe all official accident prevention safety regulations.
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If the exhaust gases are being extracted, the exhaust pressure must be at least
250 mbar greater than the pressure at the intake side.
WARNING
Emission of toxic substances from the exhaust!
Danger of poisoning from emitted gases or vapours, which can be detrimental to
health and/or can pollute the environment, depending on the particular application.
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Comply with the applicable regulations when working with toxic substances.
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Only officially approved filter systems may be used to separate out these
substances.
CAUTION
Excess voltage!
Danger of destroying the motor.
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Power connections must comply with local regulations. Voltage and frequency infor-
mation given on the motor rating plate must correspond to the mains voltage and
frequency values.
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To protect the motor and supply cable in case of malfunction, mains fuse protection
must be implemented.
WARNING
Danger of injury from moving parts!
After power failure or motor shutdown due to overheating, the motor may restart auto-
matically.
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Secure the motor so that it cannot be switched on while any work is being performed
on the pump.
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If necessary, dismantle the pump from the installation for inspection.
