AERMEC PCO5 User Manual

39
19 ALARM
The alarms are divided into the following categories:
1. Signal only alarms (only a signal on the display, alarm relay)
2. Circuit alarms (they deactivate only the relative circuit, signal on the display, alarm relay)
3. Serious alarms (they deactivate all the system circuits, signal on the display, alarm relay)
4. Gas alarms (alarms related to the management of ammable gas)
The alarms must be considered as being manually reset, except for those specied otherwise.
19.1 SIGNAL ONLY ALARMS
Alarm Source Features
Pump maintenance Count Settable threshold
Compressor maintenance Count Settable threshold
Anti-freeze Digital input
Envelope (On/O compressors) Transducers
Excessive entries in memory T System
T Memory Error System

19.2 CIRCUIT ALARMS
Alarm Source Features
High pressure
Pressure switch
Transducer Settable threshold and dierential
Low pressure Transducer
Delayed with respect to compressor start
Bypassed during and after the pumpdown cycle
Settable alarm bypass time from compressor start
Settable alarm threshold and dierential
Low pressure LOW Transducer
Enabled from the menu
Settable threshold and dierential
Compressor thermal Digital input
Oil dierential Digital input
Delayed at acquisition
Settable acquisition delay time
Condenser pump thermal Digital input
Evaporator antifreeze Probe Settable threshold and dierential
Condenser antifreeze Probe Settable threshold and dierential
Discharge refrigerant temperature Probe Settable threshold and dierential
Pressure dierentials Transducers Settable threshold and delay from start
Probes faulty Probes
Evaporator gas antifreeze Probe Settable threshold and dierential
Increment/decrement relay A.T.
A.T. fault A.T.
Anti-freeze Probe Settable threshold and dierential
Unit oine
Refrigerant drain circuit
Electronic valve alarms Valve driver
Inverter alarms Inverter

19.3 SERIOUS ALARMS
Alarm Source Features
Phase monitor Digital input
Evaporator pump thermal Digital input
Water inlet probe failure Probe
Water ow failure Flow switch Settable bypass from pump start and acquisition delay
Low pressure Pressure switch
Delayed with respect to compressor start
Bypassed during and after the pumpdown cycle
Settable alarm bypass time from compressor start
Condenser High Pressure Transducer Settable threshold and duration of permanence above the threshold
19.4 GAS ALARMS
Alarm Source Features
High pressure Pressure switch
Low pressure Pressure switch
Gas Leakage Leak detector


AERMEC PCO5 Specifications

General

Brand	AERMEC
Model	PCO5
Category	Control Panel
Language	English