93
HELIX™ Manual
(P/N 26291)
Chapter 5: Inspection & Maintenance
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
Figure 5.6c
5. INSTALL AND CONNECT NEW
REPLACEMENT BATTERY (P/N 24903) TO
‘Secondary’ LOCATION
(NEW SECONDARY BATTERY)
4. CONNECT PREVIOUS SECONDARY
BATTERY TO ‘Primary’ LOCATION
(NEW PRIMARY BATTERY)
6. POPULATE NEW BATTERY
REPLACEMENT LABEL AND APPLY OVER
OLD LABEL
1. DISCONNECT SECONDARY
BATTERY FIRST
2. DISCONNECT AND REMOVE
PRIMARY BATTERY
P
R
E
V
IOUS
P
R
IM
A
R
Y
B
A
T
T
E
RY
P
R
E
V
IOUS
S
E
C
ONDA
R
Y
B
A
T
T
E
R
Y
P
RE
V
IO
US
S
E
CO
NDA
RY
B
A
T
T
E
R
Y
3. MOVE PREVIOUS SECONDARY
BATTERY TO PRIMARY LOCATION
(LEFT)
P
R
E
V
IOUS
S
E
C
ONDA
R
Y
B
A
T
T
E
R
Y
N
E
W
RE
P
LA
C
E
M
E
N
T
B
A
T
T
E
R
Y
(
P
/N
24
9
03
)
Figure 5.6b
Figure 5.6a
