dixell XR160C, Инструкции по установке и эксплуатации

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Dixell
Installing and Operating Instructions
release 7.0
3.2 Fast freezing
When defrost is not in progress, it can be activated the keypad by holding the “ UP ” key pressed for about 3
seconds. The compressor operates in continuous mode for the time set through the “ CCt ” parameter. The
cycle can be terminated before the end of the set time using the same activation key, “ UP ” for about 3
seconds.
3.3 Defrost
Two defrost modes are available through the “ tdF ” parameter: defrost through electrical heater (tdF = 0) and
hot gas defrost (tdF = 1). Other parameters are used to control the interval between defrost cycles and its
maximum length.The defrost end is controlled by the evaporator’s probe.
At the end of defrost the drip time starts - it is controlled through the “
Fdt ” parameter.
3.4 “Air dryer” applications
The tdF parameter can be set also for “Air dryer” applications. In this case (tdF=2 or 3) the defrost relay is
energised according to the “Short Time” mode. The following parameter table describes the cycle times when
the
tdF parameter is selected for Long or Short time.
Parameters Long time (tdF = 0; 1) Short time (tdF = 2; 3)
dAF, dSd, MdF, Fdt minutes seconds
IdF hours minutes
3.5 Control of evaporator fans
The fan control mode is selected by means of the “ FnC ” parameter:
FnC=0 fans will switch ON and OFF with the compressor and not run during defrost : ;
FnC=1 fans will run continuously, but not during defrost
After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd” parameter.
FnC=2 fans will switch ON and OFF with the compressor and run during defrost;
FnC=3 fans will run continuously also during defrost
An additional parameter “FSt” provides the setting of temperature, detected by the evaporator probe, above
which the fans are always OFF. This can be used to make sure circulation of air only if his temperature is
lower than set in “FSt”.
3.6 Fan relay used as 2° compressor
If FnC=4 the fan relay is programmed to control a second compressor, in this case the Fnd parameter value is
defined as time delay, in seconds, between turning on compressors 1 and 2.
4. FRONT PANEL COMMANDS
SET :
TO DISPLAY TARGET SET POINT : by pressing and releasing this key the set point is displayed
for 5s.
TO MODIFY SET POINT: b y holding the key pressed for at least 2s set point change mode is entered: the set
point is displayed and the LEDs of the first and third digits blink. To change the value use the “ UP ”
and “ DOWN ” keys. The new value can be stored either by pressing the “SET” key (the instrument
restores temperature display) or by waiting the exit time-out to expire (15s).
(
UP ): in programming mode or in “ Function Menu ” it browses the parameter codes or increases the
value of the displayed variable. Hold pressed for a faster change.
TO START A FAST FREEZING CYCLE: in normal operation, by holding it pressed for 3s the fast
freezing cycle is started. Such cycle can be interrupted by holding the “ UP ” key pressed for 3s.
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