Carrier SUPRA 950Mt - Table 2-10 Battery Voltages; Figure 2-9 Main Heat Valves - - no and NC

2
-
2
6
6
2
-
-
6
1
1
X
X
-
-
2
0
(
0
3
/
0
4
)
i.
Bat
ter
y
vol
tage
Provisions are made to sense when the battery is
go
od
.
A
go
od
ba
tte
ry
is
de
fin
ed
as
ha
vi
ng
13
.4v
at
24
_
C
(75
_
F).
Thi
s condi
tion is use
d to
all
ow shut
-of
f of
the
diesel engine.
If the battery voltage falls below 10v during glow
cy
cl
e,
th
e
sta
rte
r
wi
ll
no
t
en
ga
ge
an
d
the
sta
rt
se
qu
en
ce
will continue, this is considered a failed start. The start
sequence is repeated until the unit starts or three con-
secutive start attempts have failed.
Table 2-10 Battery Voltages
Message-
Display
V
oltage-
Level
 Description
LOW BATT
AL4
10 or Le
ss
Uni
t will sh
ut dow
n ex-
cept during cranking.
1
1 to 1
4.5
Con
sid
ered
as n
orm
al
voltage
HI BATT AL5
17
or
more
Uni
t w
ill
shu
t d
own
.
j.
Oil
pre
ssur
e s
igna
l
When
the
oil
pre
ssu
re
swi
tch
is
clo
sed
,
it
sho
ws
that
the engine is running and prevents engagement of the
starter motor when operating in auto mode.
k.
Maxim
um off-
time
A
keypad
selec
table
feature
is
provid
ed
which will
cause the engine to be started 30 minutes after the
engine has stopped regardless of the box temperature.
l.
Sta
rt/
Sto
p co
ndit
ions
Unit will not cycle off if :
-
-
eng
ine
coo
lan
t
temp
erat
ure
is
les
s
tha
n
50
_
C
(122
_
F)
-- battery is less than 13.4 Volts
Unit will restart (overidding minimum off time) if
-- battery drops below 11 Volts
-- coolant temperature drops below 1
_
C (34
_
F)
If the uni
t can no
t cycl
e off,
it will
opera
te norma
lly
in
continuous mode. If all temperature probes fail and the
se
tpo
in
t
is
le
ss
or
eq
ua
l
to
-
-12
_
C(10
_
F)
th
e
un
it
wi
ll
no
t
shut down.
2.8
.13
Re
mote
Monit
orin
g -
Mic
rol
ink
(Opt
iona
l)
The microproce
ssor controller is
equip
ped with
a
RS232 communication port. This port can be used to
communicate unit operating data to a mobile satellite
tran
smi
tter
.
Thi
s
info
rma
tion
wil
l
the
n
be
rel
aye
d
bac
k
to
the office via a modem to a computer.
There are presently three (3) protocols supported.
The
pro
toco
l
for
the
Qual
Com
m
tran
smi
tter
,
theprotoc
ol
for the HUGHES transmitter, and Carrier Communica-
tion Protocol. The microprocessor will power up and
transmit a HUGHES protocol packet and continue to
transmit a packet every hour. The microprocessor will
transmit in the Carrier, QualComm protocol if a data
packet is requested.
2.9
REFRI
GERA
TION
COMPO
NENT
OPER
A-
TION
2.9
.1
Com
pre
sso
r
pre
ssu
re
reg
ulat
ing
val
ve
(CPR) ( see Figure 2-1 & Figure 2-2 )
This adjustable regulating valve is installed on the
su
cti
on
li
ne
of
the
co
mp
res
so
r
to
reg
ul
ate
the
am
ou
nt
of
suctio
n
pressu
re entering
the compressor
.
The CPR
valve setting is the maximum suction pressure for the
compressor.
The
suc
tion
pre
ssu
re
is
con
trol
led
to
avo
id
ove
rlo
ad-
ing
the
ele
ctri
c
mot
or
or
eng
ine
dur
ing
hig
h
box
temp
er-
ature operation.
2.9
.2
Mai
n
He
at
V
alv
e
MHV
1
(NO
)
/
MH
V2
(NC
)
MHV1
MHV2
Figure 2-9
Main Heat V
alves -
-
NO and NC
Description
The 2 valves govern cool or heat mode by allowing
the hot gas refri
geran
t to circula
te
from the
compre
ssor
to
the
co
nd
en
se
r
(co
ol
)
or
to
the
ev
ap
or
ato
r
(h
ea
t
mode).