Hettich MIKRO 22 - Offset calibration; Protection

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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2.11. Offset calibration
• Offset calibration is performed in order to equalize the tolerances of the temperature
sensor and the electronics.
Perform Offset calibration
when replacing:
Where/How
− the temperature sensor
calibrate the temperature sensor.
− the CP
calibrate temperature sensor and read out the
old offset values and put them in the new CP.
− the CP-EPROM
Read out the old offset values and put them in the
new CP.
2.12. Protection
Mains power input
⇒
Mains input with overvoltage protection.
Mains switch
⇒
Thermal overload protection (fuse).
FC
⇒
Electronic protection.
Motor
⇒
Overtemperature cutout > 135°C (only 115V
version).
Cooling
⇒
Overtemperature switch in centrifuge chamber and
at condenser.