Elmo Rietschle G-BH9 - Manual (Page 14)

Installation
610.44434.40.000 14 / 32 © Gardner Denver Deutschland GmbH
Carry out the following work to install the pump-
motor unit:
 Installation and securing,
 Attachment of the included loose muffler if
necessary,
 Attachment of threaded flange or hose flange
(available as accessories)
for the connection of inlet or discharge pipe to
the muffler,
 Electrical connection,
 Connection of inlet and discharge connection
to the system.
5.1 Installation
 WARNING
For an installation that differs from the following
specifications, it is necessary to inquire with the
Service Department!
Ambient conditions:
The pump-motor unit is suitable for installation in
the following environments:
 In a dusty or damp environment,
 in
buildings,
 in the open.
When properly installed in the open, the
pump-motor unit must be protected from
exposure to intensive sunlight, e.g. by
attaching a protective roof. Otherwise, no
special protective devices against the effects
of weathering are required.
The drive motors of the pump-motor units have
the following design:
 with degree of protection IP55 (see rating
plate),
 with tropicalized insulation.
Installation conditions:
The pump-motor unit must be installed as
follows:
 on level surfaces,
 at a maximum height of 1000 m [3280 ft]
above sea level.
When installing at an altitude of more than
1,000 m [3,280 ft] above sea level, first inquire
with the Service Department.
Minimum distances:
To ensure sufficient cooling of the pump-motor
unit, it is absolutely necessary that the required
minimum distances to the fan guard and to the
face of the vacuum pump/compressor cover
be maintained. see Chapter 3.1, "Mechanical
data", Section "Minimum distances", Pg. 8.
The minimum distances to the face of the
vacuum pump/compressor cover are especially
important when installing on the vacuum
pump/compressor cover or near a wall.
CAUTION
To ensure sufficient cooling of the pump-motor
unit, also observe the following:
 Ventilation screens and openings must
remain clear.
 Discharge air of other units may not be
directly sucked in again!
Noise radiation:
To reduce the noise radiation, the following must
be observed:
 Do not mount pump-motor unit on noise-
conducting or noise-radiating parts (e.g. thin
walls or sheet-metal plates).
 Provide pump-motor unit with sound-
insulating intermediate layers (e.g. rubber
buffers under the base of the pump-motor
unit) if necessary.
 Install the pump-motor unit on a stable
foundation or on a rigid mounting surface.
This provides for smooth, low-vibration
running of the pump-motor unit.
Components for reducing noise on the pump-
motor unit:
 Mufflers (included as standard equipment):
On delivery the pump-motor units are
equipped with attached mufflers as standard.
The noise radiation is considerably reduced
by the mufflers. See Fig. 2 to Fig. 9, Pg. 18 ff.
 Additional silencer (available as an
accessory for the 2BH1):
The additional mufflers enable a further noise
reduction. They may only be used with free
entry and exit of gases, i.e. with direct intake
out of or direct feeding into the atmosphere
without piping
.