2. Freeze-up prevention, vacuum pump continuous running control
• Avoid freeze-up in tube by vacuum pump continuous running at low outdoor temp.
• Start condition
a. OD temp status 1(a,b)
b. O
2
supply level 0
• Control content
a. Continuous running disregard of oxygen supply level
• Cancellation condition
− Start condition not fulfilled
• Exceptional condition
During deice & MOPMPS08 after deice, OD temp. status does not update as the OD fan is stop. (Air temp. detection
disable).
3. Freeze-up prevention, 2 way valve control
• Open valve periodically to prevent freeze-up during low OD air temp.
• Open valve duration change according to air temp. status (1a or 1b).
a. Start condition
Either one of below condition is fulfilled.
i. O
2
supply leve 0 & OD air temp status shift to 1(a,b).
49
CS-XE9DKE CU-XE9DKE / CS-XE12DKE CU-XE12DKE