Atlas Copco GA 160 VSD, Instruction Book

Page: 96 / 112

Testing the Electronic water drain
Control panel, EWD
Briefly press the TEST button and check that the valve opens for condensate discharge.
Checking the alarm signal
• Press and hold the test button for at least 1 minute.
• Check that the alarm LED flashes.
• Check that a warning is generated on the display of the regulator.
• Release the test button.
8.2 Maintenance instructions
Important
Cooling dryers of the ID type contain refrigerant HFC.
Safety precautions
When handling refrigerant R404a, all applicable safety precautions must be observed. The following
points are stressed:
• Contact of refrigerant with the skin will cause freezing. Special gloves must be worn and, if there is 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; therefore, safety glasses must be worn.
• Refrigerant R404a is poisonous. Do not inhale refrigerant vapors. Check that the working area is
adequately ventilated.
Local legislation
Local legislation may impose that:
• Work on the refrigerant circuit of the cooling dryer or on any equipment which influences its function
must be carried out by an authorized control body.
• The installation should be checked once a year by an authorized control body.
Instruction book
94 APF192090