To Recalibrate Temperature
Remove rear cabinet.
Remove Dumper C (this locks PC
board to TEST
mode).
Press temperature button and
maintain.
Display shows the TEST
calibration TEMPERATURE
(should be 25° C).
If not 25° C, adjust
temperature (TEMP)
potentiometer as shown
until 25° C is displayed.
Release TEMPERATURE button
on keypad.
Displays TEST RESISTIVITY
(should be 15 Megohm x cm).
If display does not show TEST: 15 Megohm x cm after Temperature
Recalibration:
Adjust RESISTIVITY (F/RES) potentiometer until display shows
15 Megohm x cm.
Replace test Jumper C in position.
Replace rear cover and lock in place.
Fault: Display shows TEMPERATURE < 0° C or TEMPERATURE
> + ° C for 2 seconds, followed by product XX,X Megohm x cm
for 2 seconds.
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