Pfeiffer Vacuum DUO 11 ATEX, Руководство по эксплуатации

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Fig. 8: Connecting the grounding cable
Procedure
1. Connect the ground terminal to the base plate of the vacuum pump with the local equipotential
bonding of the potentially explosive area.
2. Route the connection in accordance with locally applicable provisions.
3. In addition to the ground terminal of the vacuum pump, establish a further connection on the mo-
tor housing.
– Refer to the operating instructions of the motor in this regard.
5.5 Establishing mains connection
Depending on the pump type, different motor designs or mains voltages can be used:
● Three phase motor (without switch and mains cable)
DANGER
Danger to life from electric shock
Touching exposed and voltage-bearing elements generates an electric shock. Incorrect connection of
the mains supply leads to the risk of live housing parts that can be touched. There is a risk to life.
► Before the installation, check that the connection leads are voltage-free.
► Make sure that electrical installations are only carried out by qualified electricians.
► Provide adequate grounding for the device.
► After connection work, carry out an earthed conductor check.
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.
Installation
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