SABROE UNISAB S-Control, Instruction Manual

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13
0171-761-EN
Alarm/warning functions
Alarms
When an alarm limit is exceeded the com-
pressor stops. The relevant LED will flash
quickly and the alarm relay will change to
alarm position.
The cause of the excessive temperature/
pressure must be corrected and the value
brought within the warning limit before the
alarm can be cancelled. Please refer to the
section
Warning limits .
The compressor can now restart in two dif-
ferent ways -- some of the alarms by
auto-
matic reset and some by manual reset .
·
At manual reset the compressor can only
start when the reason for stopping has
been rectified and the actual value is
once again within the
warning limit
and
the
RE-
SET
key has been pressed. Please re-
fer to the section Warning limits .
·
At automatic reset the compressor can
restart when the actual value is again
within the
warning limit (i.e. it is not
necessary to press the
RE-
SET
key).
In the following table manual reset is in-
dicated by
M , and automatic reset by A .
Suction pressure
Discharge pressure
Superheat
Discharge temp.
Oil temperature
Brine temperature
Low High ­ ¯
A
A
M
M M
M M
M M
M
Set Point
Set Point
Diff. pressure M M