Elmo Rietschle G-BH9 - Manual (Page 21)

Commissioning
© Gardner Denver Deutschland GmbH 21 / 32 610.44434.40.000
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 is too dry.
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 arrows on the vacuum
pump/compressor housing (Fig. 1, Pg. 2,
Item. 7).
 The gas delivery 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.