Download User Manual - Laboratory ovens

Thermo Scientific
Model 3940 Series
3-3
* Inspect and clean the humidity generator, at the minimum.
Clean drip pan and drain lines
Clean refrigeration system condenser
Verify defrost cycle for below 10°C operation
Change filters (under normal conditions)
†Replace the filter elements on the dryer, if applicable.
†Rebuild the solenoid valves on the dryer, if applicable.
†Replace/repack the dessicant towers on the dyer, if applicable.
†Replace the check valve and o-rings on the dryer, if applicable.
5
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* Qualified service personnel only
~ Regular monitoring routines of the various levels in your unit is encouraged.
† Refer to Puregas Dryer manual included in shipping box.
Verify and document all calibrations, at the minimum.
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More frequent decontamination may be
required, depending on use and
environmental conditions.
side panels with disinfectant. Rinse everything well with sterile distilled water.
5
Between Experiments
Perform a complete decontamination procedure. Wipe down interior, shelves,
4
5 Years
Check air exchange ventilator caps for adjustment; open or close as required
2 Years
3
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Yearly
Inspect door latch, hinges and door gasket seal
Action
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Refer to
Manual Section
Preventive Maintenance for Environmental Chambers
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6 Years