Electra KN 24 RC, Руководство по обслуживанию, Страница: 67 / 168

11-12
CONTROL SYSTEM
Revision Y06-02 Service Manual - KN Series
c. IF A N operation rules f or RH group
1) In RH group, IF A N starts w hen HE starts. When HE s w itches to OFF, IF A N
s w itches to LOW f or 30 sec and then stops.
d. Heaters operation rules f or RC and SH groups:
1) For both RC and SH groups, Heaters versus ǻ T is as f ollo w s:
OFF
ON
ON
OFF
HE1
HE2
1 2 3 4
T=SP-RT [
o
c]
2) Operation rules f or Heaters in RC group:
a) Heaters can be enabled only i f IF A N is ON.
b) Heaters w ill operate according to
ǻ
T a nd the f ollo w ing graph:
32
20 20
15
50
ON
OFF
ICT
45
HE-1
&
HE- 2
General:
Windo
w :
3) Rules f or Heaters operation in SH group:
a) When heaters are to be ON and IF A N is to be OFF according to d. 1)
above, IF A N w ill be f orced to LOW speed.
b) Heaters w ill operate according to
ǻ
T and the f ollo w ing graph:
4) For both RC and SH groups, excluding deicing, HE1 and HE2 can be ON only
w hen the co m pressor is ON.
50
ON
OFF
ICT
45
HE - 2
3 7 42
HE -1
ON
OFF