Deicing Procedure - Electra WNG 7 Service Manual

Deicing procedure

o
OCT [ c]
12
0
DOC
DST
(DDT)
3 min
ON
COMP
OFF
DI (note 1)
ON
OFAN
OFF
ON
RV
OFF
ANY
L
IFAN
ON
HE
ANY
ANY
IFAN
OFF
ANY
HE
OFF
ON
OPER
BLINK
LED
Notes :
•
At the first COMP activation after SB or OFF, if (OCT < 0
min, else DI = 40 min.
•
In the following Deicing cycles, the time interval between two Deicing
cycles activation is between 30 to 80 min (refer to the flow chart).
•
For RC group, HEs are forced OFF. IFAN operation is as in Heat
Mode, Sect 4.0.3.a, i.e. IFAN will be set to OFF when ICT<30
For WAX, the IFAN is simply forced OFF.
•
For SH group, HEs are forced ON and IFAN is forced to operate in Low
speed, regardless of the ICT and difference between RAT & SPT.
Service Manual - WNG
36s max 12 min.
30s 30s
DT
IFAN is forced to Low Speed
HEs are forced ON
Note 3
HEs are forced OFF
Revision Y05-03
CONTENT
CONTROL SYSTEM
3 min
36s
DI (note 2)
o c), then DI = 10
o c.
12-21