Differential Oil Pressure Setpoint 1 Alarm Condition Summary - Carrier Pro-Dialog CONTROL 4 User Manual

4.17.4- Differential Oil Pressure Setpoint 1 alarm condition summary.

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CARRIER SA
2. If the compressor has been running for more than 90 seconds but less than 180 seconds and
DOP < (Oil Setpoint1/90)*(Comp. Running Time [in seconds] - 90)
for 3 continuous readings, then the alarm shall be tripped.
3. If the compressor has been running for 180 seconds or more, then if:
a). DOP < Oil pressure setpoint1 for 15 continuous seconds,
OR
b). (Poil - Psuction) < Oil pressure setpoint2 for 15 continuous seconds,
then the alarm shall be tripped.
Action To Be Taken
1. If the alarm is tripped then the affected compressor shall be stopped. The other compressors shall
continue to run.
oil pressure trip
oil setpoint1 oil setpoint1 oil setpoint1 oil setpoint1
15 s delay
3 continued 3 continued 3 continued 3 continued
reading values reading values reading values reading values
0
30s
5s
NOT TO BE DISCLOSED TO PERSONS OUTSIDE CARRIER ORGANIZATION
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reading values reading values
reading values reading values
90s
C
©
.
ARRIER S A
ECG-UG-02-002
Rev: Original
Oil pressure trip with low ambient or
low condensing temperature
15 s delay
3 continued 3 continued 3 continued 3 continued
180s
time from start
Page: 50/98