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POWERCIAT LX ST/HE/XE
This manual applies to the following two PowerCiat versions:
•
LX ST units, standard efficiency
•
LX HE units, high seasonal efficiency
• LX XE Premium units
For the operation of the control, please refer to the POWERCIAT Connect'Touch control manual.
CONTENTS
9 - FANS WITH AVAILABLE PRESSURE ................................................................................................................................43
10 - UNIT OPERATION WITH A FREE COOLING DRYCOOLER ........................................................................................... 43
10.1 - Unit operation option with a free cooling drycooler ......................................................................................................... 43
11 - MAJOR SYSTEM COMPONENTS AND OPERATION DATA ........................................................................................... 45
11.1 - Direct-drive twin-screw compressor with variable capacity slide valve ........................................................................... 45
11.2 - Pressure vessels .............................................................................................................................................................45
11.3 - High-pressure safety switch ............................................................................................................................................ 46
11.4 - Condensers .....................................................................................................................................................................46
11.5 - Fans .................................................................................................................................................................................46
11.6 - Electronic expansion valve (EXV) ................................................................................................................................... 47
11.7 - Moisture indicator ............................................................................................................................................................47
11.8 - Filter drier ........................................................................................................................................................................47
11.9 - Sensors ...........................................................................................................................................................................47
11.10 - Service valve set (option) .............................................................................................................................................. 47
11.11 - Power factor correction capacitors (option) ................................................................................................................... 47
12 - MAIN OPTIONS .................................................................................................................................................................49
13 - STANDARD MAINTENANCE ............................................................................................................................................51
13.1 - Level 1 maintenance .......................................................................................................................................................51
13.2 - Level 2 maintenance .......................................................................................................................................................51
13.3 - Level 3 (or higher) maintenance...................................................................................................................................... 51
13.4 - Tightening torques for the main electrical connections ................................................................................................... 51
13.5 - Tightening torques for the main bolts and screws ........................................................................................................... 52
13.6 - Condenser coil ................................................................................................................................................................52
13.7 - Evaporator maintenance .................................................................................................................................................53
13.8 - Compressor maintenance ...............................................................................................................................................53
13.9 - Precaution for compressor power supply bus bar connection......................................................................................... 54
13.10 - Check of power factor correction capacitors ................................................................................................................. 54
14 - START-UP CHECKLIST FOR LX LIQUID CHILLERS
(USE FOR JOB FILE) ........................................................................................................................................................ 55
