nash_elmo Industries GmbH
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Order No.: 610.44436.40.000
Subject to change
Edition 09/2003
Intended Use
2 Intended
Use
These operating instructions
•
apply to gas-ring vacuum
pumps/compressors of the G_400 series,
models 2BH7 2, 2BH7 3, 2BH7 4, 2BH7 5
and 2BH7 6,
•
contains instructions concerning transport
and handling, installation, commissioning,
operation, shut-down, storage, servicing
and disposal of the G_400,
•
must be completely read and understood by
all operating and servicing personnel before
beginning to work with or on the G_400,
•
must be strictly observed,
•
must be available at the site of operation of
the G_400.
About the operating and servicing personnel of
the G_400:
•
These persons must be trained and
authorized for the work to be carried out.
•
Work on electrical installations may be
carried out by trained and authorized
electricians only.
The G_400s
•
are pump-motor units for generating
vacuum or gauge pressure;
•
are used to
extract
,
pump
and
compress
the following gases
:
–
Air,
–
Non-flammable, non-aggressive, non-
toxic and non-explosive gases or gas-air
mixtures.
–
For differing gases/gas-air mixtures,
inquire with the Service Department.
•
are equipped with one of the following kind
of drive motors:
–
3-phase AC drive motor with a standard
or explosion-protected design
–
Single-phase AC drive motor
These operating instructions apply
only to
pump-motor units with a
standard design
.
For the explosion-protected design
, see
the separate operating instructions.
•
exist in the following designs:
–
single-impeller (single-stage)
–
two-impeller (two-stage)
–
three-impeller (three-stage)
Increased pressure differences can be
achieved with the two-impeller and three-
impeller pump-motor units.
•
are intended for industrial applications,
•
are primarily intended for higher pressure
conditions;
•
are designed for continuous operation.
With increased switch-on frequency (at
equal intervals of approx. 5x per hour) or
increased gas entry and ambient
temperature, the overtemperature of the
winding and the bearings can be exceeded.
Consultation with the Service Department is
required for operating conditions of this
kind.
When operating the G_400, the limits listed in
Chapter 3, "Technical Data", Pg. 7 ff. must
always be complied with.
Foreseeable Misuse
It is prohibited
•
to use the G_400 in applications other than
industrial applications unless the necessary
protection is provided on the system, e.g.
guards suitable for children's fingers;
•
to use the device in rooms in which
explosive gases can occur if the G_400 is
not expressly intended for this purpose;
•
to extract, to deliver and to compress
explosive, flammable, corrosive or toxic
fluids, unless the G_400 is specifically
designed for this purpose;
•
to operate the G_400 with values other than
those specified in Chapter 3, "Technical
Data", Pg. 7 ff.
Any unauthorized modifications of the G_400
are prohibited for safety reasons.
The operator is only permitted to perform the
maintenance and service work described in
these operating instructions.
Any maintenance and service work which goes
beyond this many only be performed by
companies authorized by the manufacturer
(inquire with the Service Department).