Nuvair MCH60, Operation Manual

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MCH60
Nuvair Page 15 www.Nuvair.com
4.2 Lead Compressor vs. Lag Compressor
The Dashboard automatically designates “Lead Compressor”
and “Lag Compressor.” The designation changes every seven
(7) days so the operating hours of each compressor are
balanced.
4.3 Compressor Unavailable
If for any reason a compressor must be disabled, press the
green “Enabled” button. The button turns yellow and reads
“Disabled.” The adjacent green button (either “Compressor A
Lead/Lag” or “Compressor B Lead/Lag”) will turn gray and read
“Compressor Unavailable.”
Once a compressor is made unavailable the unit can no longer
turn on. Maintenance or repairs can be done.
4.4 Global Alarms
The Global Alarms pages shows all alarms for both
compressors: “Compressor A” (left compressor) and
“Compressor B” (right compressor). Alarm values are factory
set.
When an alarm setpoint is reached, the button color turns yellow
and the system will either (a) sound an alarm, and/or (b) shut down the compressor.
Global Alarm definitions:
AIT_Shutdown_Alm
Gas analyzer out of range. The system shuts down immediately and sounds an alarm.
Analyzer_Alm
The gas analyzer reading is outside of setpoints. The system shuts down immediately and sounds an alarm.
ESTOP
Check emergency stop push button. The system shuts down with the E-Stop button is pushed.
FailToRun_Alm
Compressor A should be running but is not. Alarm sounds.
FailToRun_AlamB
Compressor B should be running but is not. Alarm sounds.
FilterChangeRequired
Compressor A alert. After 250 hours of runtime, breathing filters change is required. Alarm sounds.
MaintenanceSD timer activates.
FilterChangeRequired_B
Compressor B alert. After 250 hours of runtime, breathing filters change is required. Alarm sounds.
MaintenanceSD_B timer activates.
FirstStageTemp_HiAlm
Compressor A alert. The compressor first stage temperature is high and requires evaluation. Alarm sounds.