Daikin Tewis ECO2SMART Handleiding pagina 55
3.4. Alarms and safety
General alarms and safety: the same as for the MT compressors in a CO2 booster
rack.
3.5. Operating logic as ECO2 (D_ECO2 digital signal)
In general operation (D_ECO2 selector signal active), the system can only operate with subcooling.
3.5.1. START-UP PROCESS IN ECO2 MODE
MV1 = open, ECO2 compressors = stopped, VE1 = closed
Start Compressor with ECO2 VF (30 Hz) and Activate EV1
Normal regulation depending on the
3.5.2. SHUT DOWN PROCESS IN ECO2 MODE
Close EV1 and stop all ECO2 compressors in
sequence except the VF compressor which will be
Stop ECO2 compressors and Open MV1
C/ Sir Alexander Fleming, 7 _ 46980 Paterna (Valencia) SPAIN info@tewis.com www.tewis.com (+34) 963 13 42 02
When SUBCOOL PERMISSION conditions are met
Close MV1
When MV1 is detected as closed or after the specified time
After the specified time
GC outlet temperature
kept at 30 Hz.
When the maximum stop time or P11 < Pmin compressor is met
When the time between system start-ups has elapsed
AVC system ready
The system may subcool again if conditions permit
11
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