CAUTION
_ac
During operation the surface of the vacuum pump may reach tem-
peratures of more than 70 °C.
Risk of burns!
●
Make sure that the vacuum pump will not be touched inadver-
tently during operation, provide a guard if appropriate
●
Make sure that the sight glass (j) will remain easily accessible
If the oil change is meant to be performed on location:
◆
Make sure that the drain port (i) and the filling port (d) will re-
main easily accessible
●
Make sure that enough space will remain for the removal and the
reinsertion of the exhaust filter
Suction Connection
CAUTION
_a
Intruding foreign objects or liquids can destroy the vacuum pump.
In case the inlet gas can contain dust or other foreign solid particles:
◆
Make sure that a suitable filter (5 micron or less) is installed
upstream the vacuum pump
●
Make sure that the suction line fits to the suction connection (h) of
the vacuum pump
●
Make sure that the gas will be sucked through a vacuum-tight
flexible hose or a pipe
In case of using a pipe:
◆
Make sure that the pipe will cause no stress on the vacuum
pump’s connection, if necessary use an expansion joint
●
Make sure that the line size of the suction line over the entire
length is at least as large as the suction connection (h) of the
vacuum pump
In case of very long suction lines it is prudent to use larger line sizes in
order to avoid a loss of efficiency. Seek advice from your Busch
representative!
If two or more vacuum pumps work on the same suction line, if the
volume of the vacuum system is large enough to suck back oil or if the
vacuum shall be maintained after switching off the vacuum pump:
◆
Provide a manual or automatic operated valve (= non-return
valve) in the suction line
(the standard non-return valve that is installed inside the suction con-
nection is not meant to be used for this purpose!)
If the vacuum pump is planned to be used for the suction of gas that
contains limited quantities of condensable vapour:
◆
Provide a shut-off valve, a drip-leg and a drain cock in the suc-
tion line, so that condensates can be drained from the suction
line
●
Make sure that the suction line does not contain foreign objects,
e.g. welding scales
CAUTION
_a
The discharged gas contains small quantities of vacuum oil.
Staying in vacuum oil contaminated air bears a risk of damage to
health.
If air is discharged into rooms where persons stay, sufficient ventila-
tion must be provided for.
Electrical Connection / Controls
●
Make sure that the stipulations acc. to the EMC-Directive
2004/108/EC and Low-Voltage-Directive 2006/95/EC as well as
the EN-standards, electrical and occupational safety directives and
the local or national regulations, respectively, are complied with
(this is in the responsibility of the designer of the machinery into
which the vacuum pump is to be incorporated.
●
Make sure that the power supply for the drive motor is compatible
with the data on the nameplate of the drive motor
●
Make sure that an overload protection according to EN 60204-1 is
provided for the drive motor
●
Make sure that the drive of the vacuum pump will not be affected
by electric or electromagnetic disturbance from the mains; if neces-
sary seek advice from the Busch service
In case of mobile installation:
◆
Provide the electrical connection with grommets that serve as
strain-relief
Installation
Mounting
●
Make sure that the Installation Prerequisites (
Ú
page 5) are com-
plied with
●
Set down or mount the vacuum pump at its location
Connecting Electrically
WARNING
_ab
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified per-
sonnel that knows and observes 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
_a
The connection schemes given below are typical. 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 shall be checked for drive motor con-
nection instructions/schemes.
●
Electrically connect the drive motor
●
Connect the protective earth conductor
Connection Scheme Three-Phase Motor
Delta connection (low voltage):
6
