A
f\TL
n
n
PAGE
78
DATE
4/12/71
oo
Q_
2
THRU
3
SYMPTOM
PROCEDURE
O
O
oo
C
}
o
LU
RCS
quad
1
(2.
3,
4)
temp
abnormal
>190
F
<125
F
OO
Q0
OO
Q_
<c
IT
When
LR
not
needed:
•cb
(ll)PGNS:
LOG
RDR
open
IT
REMARKS
IT
When
LR
temp
<148
F:
•cb
(ll)PGNS:
LDG
RDR

close
(if
needed)
Quad
temp?
Deactivate
heaters.
•cb
(11)
HTR
RCS
SYS
A/B
1:
QUAD
1
(2.
3,
4)o&n
•cb
(16)
HTR
RCS
SYS
A/B
2:
QUAD
1
(2,
3,
4)open
•Allow
TCA
to
cool.
Reconfigure.
•cb
(11)
HTR
RCS
SYS
A/B
1:
QUAD
1
(2.
3.
4)

close
•cb
(16)
HTR
RCS
SYS
A/B
2:
QUAD
1
(2,
3.
4)

close
7

Reconfigure
heaters.
'HTR
CONT:
QUAD
(affected
quad)

QE£
•cb
(11)
HTR
RCS
SYS
A/B
1:
QUAD
1
(2.
3,
4)£lfiss
•HTR
CONT:
QUAD
(affected
Quad)MAN
(as
required
to
maintain
temp)
1
Heater
sys
in
operation'
A/B
1
ONLY
]3"
•cb
(16)
HTR
RCS
SYS
A/B
2:
(affected
quad)
close
•HTR:
CONT:
QUAD
(affect¬
ed
quad)

AUTO
Temp
incr?
FT
W
INST
OR
DOUBLE
HEATER
SYS
FAILURE
SYS
A/B
1
HEATER
CKTRY
FAILURE
OO
o
Cd
SYMPTOM
PROCEDURE
(T)
Abnormal
high
temp
is
for
periods
of
no
thruster
activity
after
temp
soakback
from
previous
activity
(if
any)
has
stabilized.
(?)
RCS
heater
systems
A/Bl
and
A/B2
are
both
in
operation,
ex¬
cept
during
lunar
stay
powerdown:
then
only
system
A/Bl
is
in
oper¬
ation.
B300PMSI005
REMARKS
Permalink: http://pid.emory.edu/ark:/25593/sn57k