Table of content
8.2 Replacing the power cord with plug .................................................................................................. 77
8.3 Replacing the line filter (-1Z1) ........................................................................................................... 78
8.4 Checking and replacing the main switch (-1S1) and the humidity switch (-8S1) .............................. 79
8.5 Removing the electric mounting plates from the machine room ....................................................... 80
8.6 Components of the electric mounting plate (standard) ..................................................................... 82
8.7 Components of the electric mounting plate (optional plate) .............................................................. 83
8.8 Controller MB1 I/O Board (-3N2) ....................................................................................................... 84
8.8.1 Replacing the controller MB1 I/O Board (-3N2) ................................................................................ 85
8.9 Replacing the controller display (-3N1) ............................................................................................. 85
8.10 Replacing individual mTRON relay modules .................................................................................... 86
8.11 Replacing the RS422 / Ethernet converter (-2U1) ............................................................................ 88
8.12 Replacing the 24 V power supply unit (-2T1) .................................................................................... 89
9 Humidifying and dehumidifying system ....................................................................................... 90
9.1 Variant A ............................................................................................................................................ 93
9.2 Variant B .......................................................................................................................................... 104
10 Repair work at the cooling system .............................................................................................. 114
10.1 General information ......................................................................................................................... 114
10.2 Required tools for repairing the cooling system .............................................................................. 114
10.3 Replacing the condenser fan .......................................................................................................... 115
10.4 Replacing the capillary tubes .......................................................................................................... 116
10.5 Checking the step motor valve (-7Y3) ............................................................................................. 117
10.6 Interface board IB3 (-7N1) for step motor valve .............................................................................. 118
10.7 Overview cooling cycle .................................................................................................................... 119
11 Calibrating and adjusting the temperature and humidity control ............................................ 120
11.1 General execution of the calibration ................................................................................................ 120
11.2 Calibrating and adjusting points ...................................................................................................... 121
11.2.1 Calibrating and adjusting point of the temperature control ............................................................. 121
11.2.2 Calibrating and adjusting points of the humidity control .................................................................. 121
11.3 Calibrating and adjusting the temperature control .......................................................................... 121
11.3.1 Resetting the temperature controller adjustment ............................................................................ 122
11.3.2 Calibrating the temperature controller ............................................................................................. 125
11.3.3 Adjusting the temperature controller ............................................................................................... 127
11.4 Setting the door heating correction ................................................................................................. 129
11.5 Calibrating and adjusting the humidity controller ............................................................................ 130
11.5.1 Resetting the humidity controller adjustment .................................................................................. 130
11.5.2 Calibrating the humidity controller ................................................................................................... 131
11.5.3 Adjusting the humidity controller ..................................................................................................... 133
12 Spare parts ..................................................................................................................................... 134
13 Parts subject to wear .................................................................................................................... 138
14 Revision history ............................................................................................................................ 138
Service Manual KBF (E5.2) 04-2015 5
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