ROTORCOMP NK 100, Руководство по эксплуатации, Страница: 31 / 52

Operating Manual - NK 100
[en] 09/2008 6.1
6 Commissioning
6.1 Preparation for commissioning
The components of the screw compressor are
carefully checked and tested at the factory. These
tests ensure that the required performance and
checking data are complied with. Nevertheless,
the screw compressor system should be observed
during the initial operating hours.
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Caution:
With regard to commissioning, the applicable reg-
ulations of the specific country must be observed.
In Germany these include the Operating Safety
Ordinance.
The following points must be observed prior to first
commissioning:
– Direction of rotation: be sure to observe (see
chapter 6.2 "Checking direction of rotation").
– The max. final pressure specified on the name-
plate may not be exceeded.
– Do not switch off screw compressor systems
running under load at the Emergency-Stop or
main switch.
– Check the oil level (see chapter 7.2 "Oil level").
– Before each first commissioning and when
recommissioning after a longer shut-down of
the screw compressor compact module,
always carry out the activities described in
Chapter 6.4 "Recommissioning screw com-
pressor system".
– With a belt drive: check the belt tension and belt
routing (see chapter 7 "Maintenance").
– Check the position of the shut-off valve.
– Check all screw fitting and fastening screws for
firm seating.
6.2 Checking direction of rotation
Direction of rotation:
Standard model rotating to the left (counterclock-
wise) looking at the shaft.
Transmission model rotating to the right (clock-
wise) looking at the shaft.
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Caution:
The direction of rotation of the screw compressor
must be checked during first commissioning and
each time changes are made to the electrical sup-
ply line of the electric motor drive. For this pur-
pose, switch on the drive motor briefly and then
switch off again immediately.
An incorrect direction of rotation for more than
2 seconds will result in destruction in the screw
compressor. Reconnect the phases of the connec-
tion cable if necessary.
6.3 Test run
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Caution:
The system is discharged extremely quickly down
to the opening pressure "minimum pressure valve"
in the Stop mode, "with shut-off valve opened"!
This can result in the oil in the separating tank
foaming up.
The possible consequences include:
– Oil escaping with the discharge air
– Oil flooding the fine separator cartridges
– Compressed air containing oil when restarting
the line
Therefore, the following points must be observed
during the test run:
– Only switch off the system with the shut-off
valve closed!
– If possible, connect the system to a com-
pressed-air reservoir!