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Testing
Before removing the valve, depressurise the compressor.
See section Problem solving.
Valve (SV) can be tested on a separate air line. If the valve does not open at the set pressure stamped on the
valve, it needs to be replaced.
Valve (SV1) is fitted on tank-mounted versions. The valve can be tested on a separate air line. If the valve
does not open at the set pressure stamped on the valve, it needs to be replaced.
Warning
No adjustments are allowed. Never run the compressor without safety valve.
9.8
Dryer maintenance instructions
Safety precautions
Refrigeration dryers of ID type contain refrigerant HFC.
When handling refrigerant, all applicable
aware of the following points:
• Contact of refrigerant with the skin will cause freezing. Special gloves must be worn. If contacted 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; always wear safety glasses.
• Refrigerant is harmful. Do not inhale refrigerant vapours. Check that the working area is adequately
ventilated.
Be aware that internal elements such as the pipes can reach a temperature of 110˚C (230˚F). Therefore, wait
until the dryer has cooled down before removing the panels.
Before starting any maintenance or repair work, switch off the voltage and close the air inlet and outlet valves.
154
Safety valve on compressed air vessel
safety precautions
must be observed. Please be specifically
Instruction book
2920 7090 51
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