Heatcraft Refrigeration Products Refrigeration System H-IM-82B - Manual (Page 10)

10
Reprinted with permission from Dixell.
DISPLAY
CF
Temperature
measurement unit
°C=Celsius; °F=Fahrenheit. WARNING: When
the measurement unit is changed the SET
point and the values of the parameters Hy,
LS, US, Ot, ALU and ALL have to be checked
and modified if necessary
Pr2
°C = Celsius
°F
=Fahrenheit
°F °F °F
DEFROST
tdF Defrost type EL = electrical heater; in = hot gas Pr2
EL = electric
defrost / in
= hot gas
defrost
EL EL EL
dtE
Defrost termination
temperature
(-50÷50 °C/ -58÷122°F) (Enabled only when
EdF=Pb) sets the temperature measured by
the evaporator probe, which causes the end
of defrost
Pr1 -58~122 65 65 38
IdF
Interval between
defrost cycles
(0÷120h) Determines the time interval
between the beginning of two defrost cycles
Pr1
0 ~ 120
hours
6 6 6
MdF (Maximum) length
for defrost
(0÷255min) When P2P = n, (not evaporator
probe: timed defrost) it sets the defrost
duration, when P2P = y (defrost end based
on temperature) it sets the maximum
length for defrost
Pr2
0 ~ 255
minutes
40 40 60
Fdt Drip time
(0÷120 min) time interval between reaching
defrost termination temperature and the
restoring of the control’s normal operation.
This time allows the evaporator to eliminate
water drops that might have formed due
to defrost
Pr1
0 ~ 255
minutes
2 2 0
FANS (XR60CX ONLY)
Fnd Fans delay after
defrost
(0÷255min) Interval between end of defrost
and evaporator fans start
Pr1
0 ~ 255
minutes
2 2
Not
Applicable
Fct
Temperature
differential
avoiding short
cycles of fans
(0÷59°C; Fct=0 function disabled). If the
difference of temperature between the
evaporator and the room probes is more
than the value of the Fct parameter, the
fans are switched on
Pr2 0~90 10 10
Not
Applicable
FSt
Fans stop
temperature
(-50÷50°C/122°F) setting of temperature,
detected by evaporator probe, above
which fans are always OFF
Pr1 -58~122 35 35
Not
Applicable
ALARMS
ALC Temperature alarms
configuration
(Ab; rE) Ab= absolute temperature: alarm
temperature is given by the ALL or ALU
values. rE = temperature alarms are
referred to the set point. Temperature alarm
is enabled when the temperature exceeds
the “SET+ALU” or “SET-ALL” values
Pr2
rE = relative
to set point
Ab =
absolute
Ab Ab Ab
ALU MAXIMUM
temperature alarm
(SET÷110°C; SET÷230°F) when this
temperature is reached the alarm is
enabled, after the “ALd” delay time
Pr2 ALL~ 302 38 50 50
ALL Minimum
temperature alarm
-50.0 ÷ SET°C; -58÷230°F when this
temperature is reached the alarm is
enabled, after the “ALd” delay time
Pr2 -58~ ALu -25 15 30
ALARM SIGNALS
Message Cause Outputs
“P1”
Room probe
failure
Compressor output
according to par. “Con” and
“COF”
“P2”
Evaporator probe
failure
Defrost end is timed
“HA”
Maximum
temperature alarm
Outputs unchanged.
Message Cause Outputs
“LA”
Minimum
temperature alarm
Outputs unchanged.
“dA” Door open
Compressor and fans
restarts
“EA” External alarm Output unchanged.
2.
Fr
eez
ers