Polar Refrigeration CK640 Bedienungsanleitung Seite 11

TEST TO CHECK CORRECT PIN PROBE INSERTION
Set-temperature cycles are preceded by a test step in order to check correct pin probe insertion.
The test has two stages:

if the outcome of the first stage is positive, the second will not be run

if the outcome of the first stage is negative, the second will be run. The outcome of the first stage is
positive if "the temperature measured by the pin probe - the temperature of the cabinet" is greater than
the value set by parameter rc at least 3 times out of 5 (the comparison is made every 10 s); if
parameter rc is set to 0, neither the first nor second stages will be run.
The outcome of the second stage is positive if the difference "temperature measured by the pin probe -
temperature of the cabinet" is greater by at least 1ºC/1ºF (with respect to the previous comparison) at
least 6 times out of 8 (the comparison is made every "rd/8 s").
If the outcome of the test is positive:
• the cycle will be activated.

the cycle will be started in timed mode

the LED
If power is interrupted during the test, when power is restored, the test will start again from the beginning.
SETTING THE CONFIGURATION PARAMETERS
The parameters are arranged on two levels.
To access the first level:
•
ensure the device is in "stand-by" mode and no procedures are running
• press
and
To access the second level:•
• access the first level
• press
or
• press
• press
or
• press
or leave for 15 s
• press
and
To select a parameter:
• press
or
To modify a parameter:
• press
• press
or
• press
or leave for 15 s
will flash.
for 4 s: the display will show "PA"
to select "PA"
within 15 s to set "-19"
for 4 s: the display will show "CA1"
within 15 s
UK