Pneumatech AD 1250 - Maintenance Instructions

Instruction book
9828 0931 61 35
5 Maintenance
5.1 Maintenance instructions
Before
starting any maintenance or repair, press the stop button, wait until the dryer
has stopped, press the emergency stop button, switch off the voltage by means of the
isolating switch (customer's installation) and depressurize the dryer.
Safeguard against unintentional switch-
on. Apply all relevant safety precautions,
including those mentioned in this book.
Filters and valves between the compressor, dryer and air consumers may require
other maintenance than stated below. Refer to the appropriate manual for more
information.
Attention
AD type cooling dryers contain refrigerant HFC.
Safety precautions
When handling refrigerant R410A, 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 R410A is poisonous. Do not inhale refrigerant vapors. Check that the working
area is adequately ventilated.
When removing the side panels of the dryer, be aware that internal elements such as the pipes can
reach a temperature of 120˚C (248˚F). Therefore, wait until the dryer has cooled down before removing
the side panels.
Before starting any maintenance or repair work, switch off the voltage and close the air inlet and outlet
valves.
Local legislation
Local legislation may stipulate that:
• Work on the refrigerant circuit of the cooling dryer or on any equipment which influences its
fu
nction must be undertaken by an authorized control body.
• The installation should be checked once a year by an authorized control body.
General
The following remarks should be kept in mind:
• Keep the dryer clean.
• Inspect and clean the filter of the steam trap daily.
• Brush or blow off the finned surface of the condenser monthly.