Digital Temperature Controller Reference Manual
Digital Temperature Controller Reference Manual
Digital Temperature Controller Reference Manual
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4.3 Repair<br />
INSTALLATION AND CALIBRATION<br />
Qualified personnel only should carry out repair. If the necessary qualified personnel are not<br />
available, the defective controller or module may be returned to the field service office of<br />
Amtech/Tempress Systems.<br />
It is recommended that spare boards and/or modules are kept in stock so a faulty board can<br />
be quickly replaced. This will give the shortest possible down time. The faulty board can then<br />
be repaired offsite.<br />
Most parts are widely available and should be obtainable from local suppliers. However, it is<br />
important that replacement parts comply with the value, tolerance, rating and dimensions<br />
specifications given in the parts list.<br />
Prior to soldering on any printed circuit board make sure that all power to that board is<br />
disconnected. After soldering, the board should be thoroughly cleaned with particular<br />
attention being given to the removal of fluxes and chemical residues.<br />
Repairs to the Cold Junction board or preamplifiers on the input board should be done with<br />
great care, maintaining the original conditions as close as possible.<br />
After a repair to the analog circuitry, the instrument should be re-calibrated.<br />
DIGITAL TEMPERATURE CONTROLLER REFERENCE MANUAL 4-7
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