28 OM Centrif Micro ΙΙ-5
ALARMS Setpoint
Figure 16, ALARMS Setpoint Screen
Table 14, ALARM Setpoints
Description No. Default Range
Pass-
word
Comments
Low Net Oil Pressure 14 50 psi 50 to 90 psi T Min net pressure (feed minus sump)
Low Oil Delta Temperature 13
40 °F 20 to 80 °F
T Min Delta-T (sat evap minus oil temp)
High Oil Feed Temperature 12
140 °F 120 to 240 °F
T Max oil temperature
Condenser Freeze 11
34.0 °F -9.0 to 45.0 °F
T Minimum cond. sat. temp. to start pump
Evaporator Freeze 10
34.0 °F -9.0 to 45.0 °F
T Minimum evap. sat. temp. to start pump
Motor Current Threshold 9 10% 3% to 99% T Min %RLA to consider motor off
Surge Slope Limit 8 20 1 – 99 deg F/min. T Surge slope temp that triggers alarm
Surge Temperature Limit 7 6 2 – 25 deg F T See screen above
High Discharge Temp-
Shutdown
6
190 °F 120 to 240 °F
T
Max discharge gas temp, stop
compressor
High Discharge Temp-Load 5
170 °F 120 to 240 °F
T Max discharge gas temp – load comp
High Condenser Pressure 4 140 psi 120 to 290 psi T
Max discharge pressure, stop
compressor
Low Evap Pressure, Stop 3 29 psi 10 to 45 psi T Min evap pressure – stop compressor
Low Evap Pressure-Unload 2 31 psi 20 to 45 psi T Min evap pressure – unload compressor
Low Evap Pressure-Inhibit 1 33 psi 20 to 45 psi T Min evap pressure – inhibit loading
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