Star connection (high voltage):
Double star connection, multi-voltage motor (low voltage):
Star connection, multi-voltage motor (high voltage):
CAUTION
_a
Operation in the wrong direction of rotation can destroy the
vacuum pump in short time.
Prior to starting-up it must be made sure that the vacuum pump is
operated in the proper direction.
Version with three-phase motor:
◆
Determine the intended direction of rotation with the arrow (c)
(stuck on or cast)
◆
“Bump” the drive motor
◆
Watch the fan wheel of the drive motor and determine the di-
rection of rotation just before the fan wheel stops
If the rotation must be changed:
◆
Switch any two of the drive motor wires (three-phase motor)
Connecting Lines/Pipes
●
Connect the suction line
●
Connect the discharge line
Installation without discharge line:
◆
Make sure that the gas discharge (k) is open
●
Make sure that all provided covers, guards, hoods etc. are
mounted
●
Make sure that cooling air inlets and outlets are not covered or ob-
structed and that the cooling air flow is not affected adversely in
any other way
Recording of Operational Parameters
As soon as the vacuum pump is operated under normal operating
conditions:
●
Measure the drive motor current and record it as reference for fu-
ture maintenance and troubleshooting work
Operation Notes
Use
CAUTION
_a
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 and adjoining plant components!
Risk of injury!
The vacuum pump must only be operated under the conditions de-
scribed below.
The vacuum pump is intended for
–
the suction
of
–
air and other dry, non-aggressive, non-toxic and non-explosive
gases
Conveying media with a lower or higher density than air leads to an in-
creased thermal and/or mechanical load on the vacuum pump and is
permissible only after prior consultation with Busch.
Max. allowed temperature of the inlet gas: 40 °C
Standard-version:
The gas shall be free from vapours that would condensate under
the temperature and pressure conditions inside the vacuum pump.
Version “Aqua”:
The vacuum pump features the corrosion protection coating CPC
and is capable of conveying water vapour (
Ú
page 8: Conveying
Condensable Vapours). Conveyance of other vapours shall be
agreed upon with Busch. Conveyance of water or other liquids in
liquid phase increases the power consumption and shall therefore
be avoided (risk of drive overload).
The vacuum pump is intended for the placement in a non-potentially
explosive environment.
Vacuum pumps MM 1324 AV standard-version are thermally suitable
for continuous operation down to ultimate pressure.
Vacuum pumps MM 1324 AV Version “Aqua” are thermally suitable
for continuous operation at intake pressures down to 200 hPa abs
(200 mbar abs). By means of process control and/or vacuum relief
valves it must be made sure that the minimum allowed intake pressure
will not be underrun.
Vacuum pumps MM 1202 AV, MM 1200 AV, MM 1252 AV and
MM 1250 AV are thermally suitable for continuous operation at intake
pressures down to 100 hPa abs (100 mbar abs). By means of process
control and/or vacuum relief valves it must be made sure that the mini-
mum allowed intake pressure will not be underrun.
Vacuum pumps MM 1322 AV and MM 1320 AV are thermally suitable
for continuous operation at intake pressures down to 150 hPa abs
(150 mbar abs). By means of process control and/or vacuum relief
valves it must be made sure that the minimum allowed intake pressure
will not be underrun.
Version “Aqua”:
The safety valve on the vacuum pump protects the vacuum pump
against overheating only. It is not designed for frequent use and
must therefore not be used as a system pressure regulating valve.
MM 1324, 1202, 1252, 1322, 1200, 1250, 1320 AV
Installation and Commissioning
0870133276 / 070328
page 7
