Operating instructions
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0175-168 - ENG
Rev. 2005.09
Operating Manual - SAB 202
Preparations before start
1.
Turn on the control voltage. The emergency
stop button on the side of the control equip-
ment cabinet must be in the ON position
(pulled out), see Fig. 8. If the system fails to
start, check the fuses, see Fig. 9.
Fig. 8
Operator's panel
Fig. 9
The fuses and their position
2.
Check the oil level in the oil separator. It
must not be higher than the upper sight
glass. Oil must be added when the level
reaches the lower sight glass.
The correct level appears only when the unit
is in operation.
If the oil level is too low, the cause must be
identified.
3.
Make sure that all valves are positioned in
accordance with the following table
Position
during operation
.
4.
The oil return valve (52) is a viscosity-
controlled return valve with a built-in throttle
valve.
The throttle valve regulates the oil flow
amount.
5.
Check that the compressor capacity control
system is in minimum slide pos. 0-4%. This
can be checked on the UNISAB II display.
Starting
Before starting the screw compressor unit, always
read the section
Preparations before start
.
Reset any alarm in accordance with the instruc-
tions for the control system.
UNISAB
Emergency
stop button
U N IS AB II
1
2
3
3 A
