4
Table of Contents, cont’d
4.0 CHARGING ........................................................................................................ 20
4.1 Voltage Phase Check .......................................................................................... 20
4.1.1 Evaporator ........................................................................................................... 20
4.1.2. Secondary Heat Exchanger ................................................................................ 20
4.2 Air Cooled Systems ............................................................................................. 20
4.2.1 Fan Speed Control System Charging.................................................................. 20
4.2.2 Flooded System Charging ................................................................................... 21
4.3 Water/Glycol Cooled Systems ............................................................................. 22
4.3.1 Water/Glycol Cooled Systems Charging ............................................................. 22
4.4 Refrigerant Handling ........................................................................................... 23
4.5 Important Refrigeration Components .................................................................. 23
4.5.1 Expansion Valve .................................................................................................. 23
4.5.2 High Pressure Cutout Switch .............................................................................. 23
4.5.3 Low Pressure Cutout Switch ............................................................................... 23
5.0 GLYCOL SYSTEMS ........................................................................................... 24
5.1 Glycol Concentration ........................................................................................... 24
5.2 Internal(Fluid)Volume-DownowModels ......................................................... 24
5.3 Internal(Fluid)Volume-UpowModels ............................................................. 24
5.4 Fluid Cooler Internal Volume ............................................................................... 25
5.5 Copper Piping Internal Volume............................................................................ 25
5.6 Freezing Point of Aqueous Solutions .................................................................. 25
6.0 CONTROLS ....................................................................................................... 26
6.1 dap4 Microprocessor Control Panel .................................................................... 26
6.2 Secondary Heat Exchangers............................................................................... 26
6.3 Wiring Diagrams .................................................................................................. 26
7.0 ELECTRONICALLY COMMUTATED MOTORS (EC MOTORS) ........................ 26
7.1 Start-up with EC motors/plus fans ....................................................................... 26
7.2 Testing ................................................................................................................. 27
7.3 Protective features .............................................................................................. 27
7.4 Maintenance ........................................................................................................ 27
8.0 REGULAR MAINTENANCE ITEMS .................................................................. 28
8.1 Airlters .............................................................................................................. 28
8.2 HumidierCanisters ............................................................................................ 28
8.3 Fuses ................................................................................................................... 28
8.4 Heating Elements ................................................................................................ 28
8.5 Refrigerant Filter Drier ......................................................................................... 28
9.0 WARRANTY ....................................................................................................... 29
10.0 CONTACT DATA AIRE ...................................................................................... 30