Hussmann ISCGG-D, Инструкция по установке и обслуживанию

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Page 8
CONTROLS and ADJUSTMENTS
REFRIGERATION
CONTROLS
c
DEFROST CONTROLS
d
MODEL
PRO
D
UCT
APPLI
CATI
O
N
DIS
C
H
A
R
G
E
AI
R
TEMPERAT
URE
DEFR
OST
FR
EQU
E
NCY
(HO
U
RS)
TYPE OF
DEFR
OST
PRESS
U
RE
TERMI
NATI
O
N
FAILS
A
FE
e
TIME
(MI
N
U
TES)
LOW TEMP
(FROZEN FOOD)
- 10
°
F
12 ELECTRIC
All
ISFGG/
RGG
And
DUALTEMP
ISCGG
MEDIUM TEMP
(DAIRY, DELI)
LOW TEMP
(ICE CREA
M
)
+ 24
°
F
- 20
°
F
12
12
ELECTRIC
ELECTRIC
80 psig for
R–22
104 psig for
R507
or R-404a
104 psig for
30
30
ISMGG/
RGG
MEDIUM TEMP
(DAIRY, DELI)
+ 24
°
F
12
OFF
TIME
80 psig for
R–22
54 psig for
R-134a
70
c
A refrigeration thermostat controls refrigeration temperature. This is factory installed in
the control panel. Adjust this thermostat to maintain the discharge air temperature
shown. Measure discharge air temperatures at the centre of the discharge honeycomb.
d
On self contained models, defrosts are time-initiated and pressure terminated. The
defrost timer is factory set as shown. All that is required is to set the timer to the correct
time of day.
e
To insure a thorough defrost, defrost must be terminated by pressure termination setting,
not by time. It may be necessary to increase this failsafe time in some instances.