Elmo Rietschle G-BH7 Operating instructions - Manual (Page 20)

Commissioning
610.44436.40.000 20 / 28 © Gardner Denver Deutschland GmbH
6 Commissioning
 WARNING
Improper use of the unit can result in
serious or even fatal injuries!
Have you read the safety precautions in Chapter
1, "Safety", Pg. 3 f.?
Otherwise you many not carry out any work with
or on the pump-motor unit!
 WARNING
Danger from rotating parts (external fan,
impeller, shaft):
Cutting/cutting off of extremities,
Grasping/winding up of hair and clothing!
Danger due to vacuum and gauge pressure:
sudden escape of fluids (skin and eye
injuries),
sudden drawing in of hair and clothing!
Danger due to escaping fluid:
Burns!
Start-up and operation only under the following
conditions:
 The pump-motor unit must be completely
assembled. When doing so, pay particular
attention to the following components:
–
the vacuum pump/compressor cover,
–
the muffler on inlet and discharge
connections,
–
the fan guard.
 The pipes/hoses must be connected to inlet
and discharge connections.
 Inlet and discharge connections and the
connected pipes/hoses may not be closed,
clogged or soiled.
 Check the mounting elements, connections
of the pipe/hose connections, lines, fittings
and containers for strength, leaks and firm
seating at regular intervals.
6.1 Preparation
 WARNING
Danger from closed connections!
With closed/soiled intake or discharge
connections vacuum or gauge pressure results
in the pump-motor unit.
This can overheat and damage the drive motor
winding.
Before start-up, make sure that the inlet and
discharge connections are not closed, clogged
or soiled!
CAUTION
Before starting up again after a longer standstill:
Measure the insulation resistance of the motor.
With values ≤ 1 kΩ per volt of nominal voltage,
the winding must be dried.
Measures before start-up:
 If a shut-off device is installed in the discharge
pipe:
Make sure that the unit is NOT operated with
the shut-off device closed.
 Before starting up the pump-motor unit,
observe the values specified on the rating
plate. Specifications on the drive-motor
nominal current apply at a gas entry and
ambient temperature of +40 C [+104°F].
 Adjust the motor circuit breaker to the drive-
motor nominal current.
Check direction of rotation:
 The intended rotating direction of the shaft is
marked with an arrow on the face of the
vacuum pump/compressor cover and on the
fan guard (Fig. 1, Pg. 2, Item 7).
 The flow direction is marked with arrows on
the inlet and discharge connections (Fig. 1,
Pg. 2, Item 6).
 Make sure the pipes/hoses on the inlet and
discharge connections are properly
connected.
 Switch the pump-motor unit on briefly and
then off again.
 Compare the actual rotating direction of the
external fan with the intended shaft rotating
direction indicated with the arrows shortly
before the pump-motor unit comes to a
standstill.
 If necessary, reverse the direction of rotation
of the motor.