Panasonic CS-XE9DKE Service Manual page 42

CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE
B. Oxygen enrich control overview
Upon receiving ON signal from indoor unit, the outdoor vacuum pump, fan & 2 way valve will operate according to the various
protection control setting.
C. Oxygen enrich protection control (O
1. Vacuum pump protection
• Base on outdoor air temp., Comp. top temp., the oxygen supply level is decided.
• Priority is given to the lower level.
• Vacuum pump operation cycle time = EOPMPS01.
• O
supply level change only after vacuum pump ON/OFF operation completed 1 cycle time if the new level is higher than
2
the present level.
• O
supply level change immediately if the new level is lower than the present level (avoid O
2
• Vacuum pump operate with ON/OFF timing according to O
freeze-up prevention control (F-2).
E.g. Oxygen supply level change timing (vacuum pump continuous running control, (C-2) not yet activated).
supply level judgement)
2
2
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supply level except during continuous running required by
supply level hunting).
2