Baker Hughes Temperature Calibrators Dry TC 650

- Clean the calibrator with a dry or slightly damp lint-free cloth. Do not use sharp objects or aggressive agents for cleaning. Ensure that your cleaning agent cannot be a source of danger from a reaction with parts of the calibrator or the materials inside. If unsure of clean agent compatibility, contact Druck Services.

- The grille openings, see Figure 1 items 11 and 12, in the base of the calibrator must be cleaned at regular intervals. The cleaning interval depends upon on the air pollution at the installation site and the amount of use.

1. Clean the grille openings by vacuuming or brushing.

During normal operation, the inserts create small quantities of metal dust. This can result in an insert getting stuck in the dry block.

1. Remove the insert from the dry block with the aid of the sleeve exchange tool.

2. Clean the insert and the dry block at regular intervals.

- 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.;

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.;

- 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.;

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.

1. Disconnect the mains connection cable from the calibrator.

2. Prise open the fuse compartment from the bottom with a fingernail or a flat screwdriver.

3. Remove the compartment with the fuses.

4. Check the fuses and replace any blown fuses.

Note: Always replace both fuses, even if only one has blown.

5. Fit the fuse compartment back in place and connect the mains connecting cable. See Section 4.2.

Note: Should the fuses blow repeatedly, there is probably a fault with the calibrator. Send the calibrator to Druck for repair.;