Copyright 2013 Baker Hughes Company.
38 | Dry
TC / Liquid
TC Temperature Calibrators–English
If you are unable to remedy the problem, immediately disconnect the calibrator to protect against
unintended operation. Return the calibrator to Druck for repair.
8. Maintenance, Cleaning and Transportation
Before maintenance, cleaning and transportation, ensure:
1. The calibrator has cooled sufficiently. See Section
2. The calibrator has been switched off and disconnected from the mains.
8.1 Maintenance
The calibrator is maintenance-free and cannot be repaired by the user. In case of a defect, the
calibrator must be returned to Druck, or approved service representative for repair.
For safe operation of the calibrator, the following checks must be carried out at regular intervals.
8.1.1 Before Use
1. Check the calibrator for damage.
2. For micro bath calibrators, check the filled height of the calibration liquid. See
8.1.2 Annually
1. Visually inspect all parts of the calibrator for corrosion, wear and damage.
2. Have a trained technical person carry out an electrical safety inspection.
8.1.3 Recalibration
It is recommended to send the calibrator to Druck for recalibration after 36
months, or after a
maximum of 500 operating hours, whichever is sooner.
8.1.4 Calibration Liquid
Calibration liquids become contaminated with age and with use. The speed at which this occurs
depends greatly on the type of liquid and the usage behavior.
1. Replace contaminated or aged calibration liquid.
8.1.5 Magnetic Stirrer
The magnetic stirrer is subject to mechanical wear and tear during normal operation. The
magnetic stirrer has a limited lifetime and requires periodic replacement. The fillet in the middle
of the magnetic stirrer reduces the friction during the rotary movement. Once the fillet has worn,
the stirring function can no longer be guaranteed because of the increased friction.
1. Check the fillet of the magnetic stirrer for wear and tear. Replace the magnetic stirrer if
necessary.
8.1.6 Mains Fuses
The mains fuses of the calibrator are located on the front side and are integrated in the mains
connection. If mains voltage is present, but the display is dark and the fan is not running, check
the mains fuses. Replace the fuses if necessary.
PREVENT FAILURE
Never open the calibrator. Critical parts or
components may be damaged.
WARNING
Only use fuses of the same type.
For fuse specification, see Section
