Electrical connection
WARNING
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified per-
sonnel that knows and adheres to the following regulations:
- IEC 364 or CENELEC HD 384 or DIN VDE 0100, respectively,
- IEC-Report 664 or DIN VDE 0110,
- BGV A2 (VBG 4) or corresponding national accident prevention
regulation.
CAUTION
The connection schemes given below are considered to be standard.
Depending on the specific order or for certain markets deviating
connection schemes may apply.
Risk of damage to the drive motor!
The inside of the terminal box must be checked for drive motor
connection instructions/schemes.
l
Electrically connect the drive motor
l
Connect the earth conductor
Delta connection (Low voltage):
Star connection (High voltage):
Star-star connection, multi-voltage motor (Low voltage):
Delta connection, multi-voltage motor (High voltage):
CAUTION
Operation in the wrong direction of rotation, even for a short time
while can destroy the vacuum pump.
Prior to starting up, make sure that the vacuum pump will operate in
the proper direction of rotation.
In the case of portable installation of the vacuum pump, the electrical
connection has to be equipped with cable guides in order to prevent
undue stresses on the electrical cable.
If the direction of rotation of the fan must be changed:
u
Switch any two of the drive motor wires in the terminal box
Looking at the motor fan cover, the direction of rotation is clockwise.
Operation notes
Application
CAUTION
The vacuum pump is designed for operation under the conditions
described below.
In case of disregard risk of damage or destruction of the vacuum
pump!
Risk of Injury!
The vacuum pump must be operated under the conditions
described below.
The vacuum pump is designed for
–
the suction (SV) or the exhaust (SD)
of
–
air and other dry, non-aggressive, non-toxic and non-explosive ga-
ses
Conveying media with a higher density than air leads to an increased
thermal and mechanical load on the vacuum pump and is permissible
only after prior consultation with Busch.
The vacuum pump is made for the intended use in potentially non-ex-
plosive areas
The vacuum pump is thermally suitable for continuous operation.
The vacuum pump isleak-tight at ultimate pressure.
CAUTION
This vacuum pump is a dry-running pump.
Do not lubricate the vacuum pump with oil or grease.
Installation and Commissioning
Page 6
