6 Maintenance instructions
Safety precautions
Before starting any maintenance or repair work, close the air inlet and outlet valves and switch off
the voltage.
When removing the side panels of the dryer, be aware that internal elements such as the pipes can
be hot. Therefore, wait until the dryer has cooled down before removing the side panels.
Dryers of F type contain refrigerant HFC.
When handling refrigerant, all applicable safety precautions must be observed. Please be
aware of the following points:
• Contact of refrigerant with the skin will cause freezing. Special gloves must be worn. In case of
contact with the skin, the skin should be rinsed with water. On no account may clothing be
removed.
• Fluid refrigerant will also cause freezing of the eyes; safety glasses must hence be worn.
• Refrigerant is hazardous. Do not inhale refrigerant vapors. Check that the working area is
adequately ventilated.
Local legislation
Local legislation may stipulate that:
• Work on the refrigerant circuit of the cooling dryer or on any equipment which influences its
function must be undertaken by an authorized control body.
• The installation is checked once a year by an authorized control body.
Instructions
• Keep the dryer clean.
• Inspect and clean the filter of the automatic condensate drain monthly and, in dusty
environments, inspect and clean weekly:
• Release the pressure in the dryer by pressing the TEST push button on top of the
condensate drain (before switching off the supply voltage).
• Switch off the voltage.
• Remove the filter from the automatic drain and clean it with an air jet, working from inside
to outside.
• Reinstall the filter.
• Brush or blow off the finned surface of the condenser monthly. Do not use water or solvents.
Note:
These maintenance intervals are intended for well-ventilated, non-humid, and dust-free
environments.
Under high-humidity ambient conditions, the intervals should be halved.
Instruction book
26 2920 7210 40
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