68 CT-600-2
No. Function Description Related
alarms,
warnings
(see 14.1)
Related
param.
(see 13.1)
Related
timers
(see 13.2)
exceeded for the timer period.
Lubricating pressure is defined as the
difference between oil pressure after
filter (before compressor) and suction
pressure.
2.8 Oil system
pressure drop
high
Surveillance for high oil system
pressure drop. A warning is issued
when the warning limit is exceeded. An
alarm is issued when the alarm limit is
exceeded. Oil system pressure drop is
defined as the difference between
discharge pressure (after compressor)
and oil pressure after filter (before
compressor)
8 70, 71
2.9 Oil filter
pressure drop
high
Surveillance for high main oil filter
pressure drop. A warning is issued
when the warning limit is exceeded. An
alarm is issued when the alarm limit is
exceeded.
9 72, 73
2.10 Suction
superheat low
Surveillance for low suction superheat.
A warning is issued when the warning
limit is exceeded. An alarm is issued
when the alarm limit is exceeded (after
timer delay). Suction superheat is set to
1.0, if suction temp. sensor is disabled.
10 25, 26 7
2.11 Suction
superheat high
Surveillance for high suction superheat.
A warning is issued when the warning
limit is exceeded. An alarm is issued
when the alarm limit is exceeded.
Suction superheat is set to 1.0, if
suction temp. sensor is disabled.
11 27, 28
2.12 Discharge
superheat low
Surveillance for low discharge
superheat for each individual
compressor. A warning is issued when
the warning limit is exceeded. An alarm
131, 132,
133, 161,
162, 163
54, 55 25
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