BUSCH Seco SG 0008 A, Installation And Operating Instructions Manual

Page: 6 / 20

Seco SG 0008 A
page 6
0870162612 /
190709
•
Make sure that the suction line fits to the suction connection (c)
of the vacuum pump
•
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 (c) of the vac-
uum pump
In case of very long and thin suction lines a loss of volume flow is pos-
sible. Seek advice from your Busch representative!
In case the vacuum pump is planned to be used for the suction of gas
that contains limited quantities of condensable vapour or in case of
risk of suction of liquids:
♦
Provide a shut-off valve, a drip-leg and a drain cock in the
suction 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
Gas Discharge
The discharged gas must flow without obstruction. It is not permitted
to shut off or throttle the discharge line or to use it as a pressurised
air source.
Max. permitted back pressure 0.1 mbar g.
•
Make sure that the discharge line fits to the gas discharge (g) of
the vacuum pump
•
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 discharge line over the entire
length is at least as large as the gas discharge of the vacuum
pump
In case of very long and thin suction lines a loss of volume flow and an
overload of the vacuum pump is possible. Seek advice from your
Busch representative!
•
Make sure that the discharge line either slopes away from the
vacuum pump or provide a liquid separator or a drip leg with a
drain cock, so that no liquids can back up into the vacuum pump
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 the responsibility of the designer of the machinery
into which the vacuum pump is to be incorporated;
➔
page 13:
note in the E
U
Declaration of Conformity).
•
Make sure that the power supply for the drive motor is compati-
ble with the data on the nameplate of the drive motor
•
Make sure that a motor safety switch (e.g. Eaton PKZM0-0,63)
will be installed and adjusted to trip level I
R
= Nominal current I
N
•
Make sure that the drive of the vacuum pump will not be af-
fected by electric or electromagnetic disturbance from the mains;
if necessary seek advice from the Busch service
•
Make sure that an earth point is available for connection to the
earthing connection of the vacuum pump
All signal lines shall be executed with shielded cables according to
EN 60079-14 or the equivalent national or local regulations.
Installation
Mounting
•
Make sure that the installation prerequisites (
➔
page 5) are com-
plied with
•
Set down or mount the vacuum pump at its location
Connecting Electrically
Connection Scheme Three-Phase Motor
•
Electrically connect the drive motor
•
Determine the intended direction of rotation with the arrow
(stuck on or cast)
•
Connect the earthing connection (e) of the vacuum pump to the
earth point with an earth cable
WARNING
The vacuum pump is intended to convey potentially explosive
gases/gas mixtures.
Risk of explosion in the discharge area!
The process gas/gas mixture must be disposed of such that no
potentially explosive gas mixtures can accumulate in the dis-
charge area.
WARNING
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified
personnel 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
Operation in the wrong direction of rotation can destroy the vac-
uum pump in short time.
Risk of explosion!
Prior to starting-up it must be made sure that the vacuum pump is
operated in the proper direction (clockwise rotating field).