Carel plug-in PJ32C, User Manual

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Cod. +030221881 rel. 1.0 - 11/02/2000 15
Based on the factory settings, the
PDLQ functions are the following:
•
3-6: configured as a thermostat, with operation in degrees centigrade, 6HW3RLQW at 4ºC and differential of 2ºC. The
DEFROST operation is enabled by time at 8 hour cycles lasting 30 minutes (compressor stop only). The high and low temperature
alarms are disabled. In the case of operation in continuous cycle, the duration is 4 hours and the temperature alarm is bypassed for
2 hours from the end of the cycle.
•
3-<3-;: have the same settings as the PJ32S. Furthermore, these are programmed to manage defrosting using electrical
elements, with operation based on time for the X version, and with the second probe for the Y model. The display of the
temperature during defrosting remains on the last value acquired before the start of the defrost. There is an evaporator dripping
time of two minutes after the defrost, and the high temperature alarm is bypassed for one hour from end defrost.
•
3-&: on top of the functions of the IR32Y, these units are set to manage the evaporator fans, which are stopped when the
compressor is off and during defrosting. Furthermore, a one minute pause is set for the fans after dripping, to allow the evaporator
to return to operating temperature before starting forced ventilation. In the IR32C, the defrost is stopped when the probe on the
evaporator measures 4ºC (defrost by temperature).
If many of the instrument’s parameters need to be modified during installation, it may be useful to set the complete configuration of
one instrument, and then copy it using the KEY accessory; in this case the operation can be performed in just a few seconds, with a
complete copy of all the parameters.
7DEOHVXPPDULVLQJWKHSDUDPHWHUVWREHFKHFNHGEHIRUHLQVWDOODWLRQ
FRGH SDUDPHWHU W\SH PLQ PD[ XRP GHI
UG control differential
F 0 +19 °C/°F 2
FRQWURO
SDUDPHWHUV
/ control Set Point -50 127 °C+/°F 4
G
type of defrost (0=heating element, 1=hot gas, 2=heating element
by time, 3=hot gas by time)
C 0 1 flag 0 (*)
G, interval between defrosts
F 0 199 h 8
GHIURVW
SDUDPHWHUV
GW end defrost temperature Set Point
F -50 +127 °C/°F 4
$G temperature alarm delay
F 0 +199 min 0
$/ shift low temperature alarm threshold
F 0 +127 °C/°F 0
DODUPSDUDPHWHUV
$+ shift high temperature alarm threshold
F 0 +127 °C/°F 0
RWKHUVHWWLQJV
+
enable defrosting mod. S and selection of multifunction relay
function (alarm)
C 0 1 flag 1
7DE
(*)
:$51,1*6:
•
for all models where the second probe is not used or used for the display of the product temperature, or for the models with
the alarm relay, parameter
G must be set for timed defrost, in this way, any alarms from the second probe are not signalled. To
stop the running of the defrost cycles, parameter
G, must also be set to 0;
•
the S models with two probes (codes PJ32S00 and S0P) have been designed to use the second probe for measuring and
displaying the food storage temperature (Food Probe). To manage the second probe, these models are in fact programmed as Y
models, with all the corresponding parameters, but do not have the defrost relay; it is clear that they must be set so as defrosting is
not enabled, or, if necessary, only timed defrost with compressor off;
•
the S models with alarm relay, PJ32S20*, to use the function of programming the status of the alarm relay by parameter
+ are
set as X models; as they don’t have the defrost relay they must be programmed so as defrosting is not enabled, or, if necessary,
only timed defrost with compressor off (
G,=0 or G,>0 for cyclical defrost).