Figure 3-3 Temperature Controller Operating Sequence (Frozen Range); Figure 3-4 Temperature Controller Operating Sequence "Lead" Evaporator - Carrier SUPRA 850Mt Operation And Service Manual

FROZEN RANGE
CONTINUOUS & START/STOP

Figure 3-3 Temperature Controller Operating Sequence (Frozen Range)

FROZEN RANGE
CONTINUOUS in LEAD
compartment

Figure 3-4 Temperature Controller Operating Sequence "Lead" Evaporator

(Frozen Range) Controller Set Point Below - -12
HS COOL
+1 _ C
LS COOL
NULL
--4 _ C
LS HEAT
--5 _ C
HS HEAT
Controller Set Point Below - -12
HS COOL
+1 C
_
LS COOL
--1.5 C
_
LS HEAT
--5 C
_
HS HEAT
3-10
On start/stop, the diesel engine
stops when all compartments
are in null. It restarts when any
one of the compartment reaches
autorestart preset conditions.
+2 C
_
+0.5 C
_
Frozen set point < --12
--3 C
_
--4 C
_
Electrical heating for
non lead compartment
C (+10 F)
_ _
+2 C
_
Frozen set point < --12
--0.5 C
_
--4 C
_
Hot gas heating for
lead compartment
C (+10 F)
_ _
˚
C
˚
C