Elmo Rietschle L-BV5 Operating instructions - Manual (Page 19)

Commissioning
© Gardner Denver Deutschland GmbH 19 / 32 610.44440.40.000
610.44440.99.B12
Fig. 11: Knocking out the openings in the terminal
box
A B
C
610.44440.99.B13
A Standard entry union
B Entry union with reducer
C Installation position of backing nut
Fig. 12: Entry unions with backing nut
To protect the motor against overloading:
 Use a power limiting switch.
These have to be adjusted to the design cur-
rent specified on the rating plate.
5.3.2 Operation with a frequency converter
 High-frequency current and voltage harmonics
in the motor supply line can create electro-
magnetic interference. This is dependent on
the converter design (type, manufacturer, in-
terference suppression measures).
 Observe the EMC instructions provided by the
manufacturer of the converter.
 Use screened supply cables.
For optimum screening a large area of the
screen should be connected to the motor's
metallic terminal box using a metallic, conduc-
tive union.
 Depending on the type of converter used,
when using motors having integral sensors
(e.g. PTC resistors) interference can be cre-
ated in the sensor cables.
 For the maximum speed of rotation see the
table, "Maximum speeds", page 9.
 In the USA, units having UL approbation may
not be operated on frequency converters
without testing by an appropriate inspection
authority.
6 Commissioning
 WARNING
Improper handling of the equipment can re-
sult in serious or even fatal injuries!
Have you read the safety notes in chapter 1,
"Safety", page 4 above?
If not then you are not allowed to carry out any
work on or with the equipment!
 WARNING
Hazard in case of overpressure and negative
pressure!
Hazard presented by leaking media!
Hazard presented by moving parts!
The unit may only be started up if:
 the fan guard and cover are fitted.
 the piping is connected to the suction and
discharge connections and the operating-
liquid inlet.
 the piping and connections have been pres-
sure and leak tested.
CAUTION
If the unit runs dry the rotary seals will be de-
stroyed within a matter of seconds.
 DO NOT switch on until the system has been
filled with operating-liquid!
6.1 Preparation of the unit
CAUTION
If the gases / vapours expelled on the discharge
side are to be transferred onward, then care
must be taken that the maximum outlet pressure
is not exceeded!
See the section, "Pressures", page 10 above.
ATTENTION
Maximal permissible quantity of water carried
along through the inlet connection:
see the table, Maximum permissible quantity of
water carried along", page 12.
If a shut-off device is installed in the discharge
line: