TECHNICAL MANU AL CD 30÷520 06.06 M T E 0 11 2 5 6 ... - Chiller

CD 30 ÷ 520default page: Mode setting page. Default setting is: Cooling, Auto, On, and the flashingindicator lights with waiting mode. If there is no operation for 8 seconds, it will quit from waitingmode and the indicator lights will be off, then return to home page.2——Mode setting1) Mode setting page can be selected by the local wire controller button operation, and underthis page, you can set the number of the unit which needs to operate.A) On Auto mode, the mode setting is for the whole unit. The number of the units is that ofthe online unit which can not be changed. The unit for start or stopping is selected byelectric controller of the main unit.B) On Manual mode, the mode setting is for the online unit and the number of the unit canbe changed. After setting, the ON/OFF of the actual unit is controlled by wirercontroller. If you choose turning on unit, units will start in the sequence from lowaddress to high address until achieving the number selected. If you choose turning offunit, units will be turned off in the sequence from high address to low address untilachieving the number selected including the units which delays to start during unitrunning term.C) When choosing Manual mode to start unit, units will start every 6s’ interval in thesequence from low address to high address (the units which has started are free ofthis 6s limit) until achieving the number selected. If one unit fails, wire controller will beturned off it, and start the next unit in the sequence from low address to high address.If there is no unit available, the controller will just turn off the failed one and displaycorresponding failure code. When the failed one recovers, it will restart, meanwhilethe replacement will be turned off.D) When choosing Manual mode to start unit, if one unit compressor fails and stops, it willbe restart 3 minutes later, so the start orders of this unit and the others with higheraddress need to delay for 3 minutes to send, which can avoid multi-compressorsstarting simultaneously.E) Choosing Manual mode to close unit, units will be turned off in the sequence from highaddress to low address.F) Starting water pump on Manual mode is only available for the main unit. Main unit can’tbe replaced when the it fails.G) The water pump working mode is just available for the main unit while there is no waterpump mode in auxiliary unit. After setting, irrespective of the number of unit, the wirecontroller only sends the order to main unit to start up, while the auxiliary units keepoff.56