/11.2015/
G17D
41
EN
Controller C7000, Start/stop-key
The doors can only be opened with the key provided and rep-
resent a protective device. During operation the doors may not
be opened and the rear panels may not be removed.
• Adjust the desired return air temperature at the controller.
Oil dilution! Bearing malfunction!
• It is important to ensure that new compressors are not subjected to liquid
abuse. If the compressor is equipped with a crankcase heater, turn it on
12 hours before starting the compressor.
• Start the A/C unit by pressing the Start/Stop-key on the controller.
• Check after 20 minutes operation, whether bubbles are visible in the sight
glass of the liquid line. If this is the case, refrigerant might have escaped
by a leak. Check the circuit on leaks, eliminate these and top up the circuit
with refrigerant in regard of the chapter "Maintenance".
• Check the oil level at the compressor in respect of the right level.
The oil level should be between the lower quarter and the middle of the
sight glass.
There is no oil sight glass in A/C units with speed controlled compressor.
• Check the current consumption of the compressors and the fans comparing
it with the values of the e-data sheet.
• Instruct the operational staff of the controller manipulation (refer to the
controller manual).
Oil sight glass, On/Off compressor
E-box for A/C units with speed controlled compressor
Main switch
µPC-board
for the control of inverter
and electron. expansion
valve in the first refrige-
rant circuit
Inverter
