Hitachi SAMURAI Series Service Manual page 75

3. Servicing
Index
3.1 LCD display for Service Menu ............................................................................................................... 69
3.2 General notes ........................................................................................................................................ 77
3.3 Access inside the module for servicing ................................................................................................. 77
3.4 Removing covers................................................................................................................................... 78
3.4.1 Unit description .............................................................................................................................................. 78
3.4.2 Panels on the left (2 panels) or right side (2 panels). .................................................................................... 79
3.4.3 Front cover (E-Box - compressor side) ......................................................................................................... 79
3.4.4 Front cover (Hex lower cover) ....................................................................................................................... 80
3.4.5 Rear cover (water connection side) ............................................................................................................... 80
3.4.6 Water pipes support ...................................................................................................................................... 81
3.4.7 Protection net (Air cooler grille) ..................................................................................................................... 82
3.5 Cycle components ................................................................................................................................. 83
3.5.1 Compressor removal ..................................................................................................................................... 83
3.5.2 Overhaul work ............................................................................................................................................... 85
3.5.3 Recovering the refrigerant ............................................................................................................................ 86
3.5.4 Replacement of the Brazed plate heat exchanger ........................................................................................ 87
3.5.5 Replacement of the expansion valve ............................................................................................................ 89
3.5.6 Replacement of the check valve ................................................................................................................... 90
3.5.7 Filter drier ...................................................................................................................................................... 91
3.5.8 Replacement of the stop valve (with check joint) .......................................................................................... 92
3.5.9 Replacement of the high pressure switch (PSH) ........................................................................................... 92
3.5.10 Replacement of the pressure sensor (Pd) ................................................................................................... 92
3.5.11 Replacement of the pressure sensor (Ps) ................................................................................................... 92
3.5.12 Replacement of the pressure sensor (PSW) ............................................................................................... 93
3.5.13 Replacement of the pressure relief valve .................................................................................................... 93
3.5.14 Replacement of the sight glass ................................................................................................................... 93
3.5.15 Replacement of the crankcase heater (CH) ................................................................................................ 93
3.5.16 Replacement of the stop valve (x3) ............................................................................................................. 94
3.5.17 Replacement of the thermistor (Suction, THMs) ......................................................................................... 94
3.5.18 Replacement of the thermistor (Discharge, THMd) ..................................................................................... 95
3.5.19 Replacement of the thermistor (x2) (Evaporation, THMr2) ......................................................................... 95
3.5.20 Replacement of the thermistor (Cooler water inlet, THMwi) ........................................................................ 96
3.5.21 Thermistor (Cooler water outlet, THMwo2) ................................................................................................. 96
3.5.22 Thermistor (Cooler water outlet, THMwo) ................................................................................................... 97
3.5.23 Replacement of the solenoid valves (SVa, SVb, SVc) ................................................................................ 97
3.5.24 Replacement of the water inlet pipe purge .................................................................................................. 97
3.5.25 Removing the differential pressure device (optional) .................................................................................. 98
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SMGB0082 rev.1 - 07/2015
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S e r v i c i n g
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