Dixell
Installing and Operating Instructions
release 7.0
4. “
Pr2
”: includes all the instrument’s parameters (at installer level). It can be accessed through a security
code. Hence it is possible to modify all parameters and add or remove parameters from “Pr1” (user level)
by pressing
“SET”
+
“DOWN”
. When a parameter is enabled at user level, LED
(Alarm LED) is on.
5. “
LOC
”: keyboard lock. When enabled the “POF” flashing message is displayed for a few seconds then the
keys are locked . Only the set point display is enabled.
6. “
Out
”: exits from menu.
From functions “dFt” and “Pt2” the instrument will go back to “Functions Menu” by time out. From the all other
functions the instrument will display again the room temperature by time out.
5.3 Exit Timeout
If no key is pressed within 15 seconds the instrument switches back to room temperature display mode.
5.4 Accessing “Pr2” and SECURITY CODE input
To access parameters in “
Pr2
” a security code is required.
1. Enter Function Menu, select label “Pr2” and press the “
SET
” key. The “PAS” flashing message is
displayed, shortly followed by “0 - -” with a flashing zero.
2. Use
“UP”
or
“DOWN”
to input the security code in the flashing digit;
3. Confirm the figure by pressing “
SET
”.
4. Repeat operations 2 and 3 for the other digits.
5. If the security code is correct the access to “Pr2” is enabled by pressing “
SET
” on the last digit, otherwise
the security code input process restarts from the beginning.
If no key is pressed within 15 seconds the instrument reverts to room temperature display mode.
SECURITY CODE is
321
NOTE
: each parameter in “Pr2” can be removed or put into “Pr1” (user level) by pressing
“SET”
+
“DOWN”
.
When a parameter is present in “Pr1” LED
is on.
5.5 Changing a parameter’s value
Each parameter is identified by a special alphanumeric code (label).
To change the parameter’s value operate as follows:
1. Enter the Function Menu and select the parameters’ list you require: “
Pr1”
or “
Pr2”
.
2. Browse the parameters’ list using “
UP
” or “
DOWN
” until the required parameter is displayed.
3. Press the “
SET
” key to display its value.
4. Use “
UP
” or “
DOWN
” to change its value.
5. Press “
SET
” to store the new value and skip to the following parameter.
TO EXIT
: Press “
SET
”+”
UP
” or wait 15s without pressing a key.
NOTE
: the set value is stored even when the procedure is exited by waiting the timeout to expire.
6. LIST OF PARAMETERS
Hy Differential
: (0,2°C ÷ 12,0°C / 2°F ÷120°F) Intervention differential for set point, always positive.
Compressor Cut IN is Set Point Plus Differential (Hy). Compressor Cut OUT is when the temperature
reaches the set point.
LS Minimum set point
: (-57°C÷SET/-57°F÷SET): Sets the minimum acceptable value for the set point.
US Maximum set point
: (SET÷99°C/SET÷196°F). Set the maximum acceptable value for set point.
AC Anti-short cycle delay
: (0
÷
30 min) minimum interval between the compressor stop and the following
restart.
ALC Temperature alarms configuration
: (0 = temperature alarm are related to SET, alarm relay and buzzer
works in parallel; 1 = temperature alarms are referred to absolute values; alarm relay and buzzer work in
parallel; 2= referred to set, alarm relay is active when the alarm is active; 3= absolute temperature, alarm
relay is active when the alarm is active) determines if temperature alarms are referred to set point or if
alarms are referred to absolute temperatures.
952057-58
XR160C - XR170C - XR160D - XR170D - XR162C - XR172C
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