Rogers GPKD-1550-H, Инструкция по эксплуатации, Страница: 12 / 49

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1.6. Monitoring and Limiting Devices
The compressor is equipped with the following monitoring and limiting devices:
•
Compressor 1st stage suction air pressure transmitter. Monitors pressure at the
compressor inlet. Pressure is displayed on the HMI. This pressure is monitored for
loaded and unload condition, and condition of the inlet air filter.
•
Compressor 2nd stage suction air pressure transmitter. Monitors pressure after the
intercooler and before air enters the compressor 2nd stage. Pressure is displayed on
the HMI. Indicates condition of the intercooler and compressor stages and is
monitored for loaded or unloaded operation.
•
Compressor air outlet pressure transmitter. Monitors pressure as air exits the
compressor. Pressure is displayed on the HMI. Indicates condition of the aftercooler
and compressor 2nd stage and is used for compressor load control.
•
Oil pressure transmitter. Monitors lubrication oil pressure at the last bearing oil
nozzle. Pressure is shown on the HMI. Indicates condition of the lube oil system, oil
filter, and the setting of the oil pressure control valve.
•
Inlet air temperature. Monitors temperature at the compressor inlet filter housing.
Temperature is displayed on the HMI.
•
1st stage discharge air temperature sensor. Monitors temperature at the discharge of
the compressor 1st stage. Temperature is displayed on the HMI. Indicates condition
of the compressor 1st stage.
•
2nd stage suction air temperature sensor. Monitors temperature after the intercooler;
at the air inlet of the compressor 2nd stage. Temperature is displayed on the HMI.
Indicates condition of the intercooler.
•
2nd stage discharge air temperature sensor. Monitors temperature at the discharge
of the compressor 2nd stage. Temperature is displayed on the HMI. Indicates
condition of the compressor 2nd stage and discharge check valve.
•
Compressor outlet air temperature sensor. Monitors air temperature after the
aftercooler; delivered to the compressor outlet. Temperature is displayed on the HMI.
Indicates condition of the aftercooler.
•
Oil temperature sensor. Monitors temperature of the lubricating oil downstream of the
thermostatic valve. Temperature is displayed on the HMI. Indicates condition of the
oil cooler and thermostatic control valve.
Total compressor running hours, total compressor loaded hours, and the count of
load/unload cycles can be viewed on the HMI.
The compressor control panel includes pilot lights to indicate the following conditions:
'Running', 'Loaded', 'Standby', 'Alert', 'Alarm'. There is also an alarm buzzer, which
sounds when an alarm or alert condition is detected. The HMI includes an 'LED Test'
function, which tests for proper operation of the pilot lights and alarm buzzer by briefly
illuminating all lights and sounding the buzzer. The operation of the compressor is not
affected by an LED test.