Komatsu PC360LC-11 Shop Manual page 19

00 INDEX AND FOREWORD
CIRCUIT DIAGRAM AND ARRANGEMENT OF CONNECTOR PINS FOR AIR CONDITIONER ......... 80-33
AIR CONDITIONER SYSTEM DIAGRAM ............................................................................................. 80-35
INPUT AND OUTPUT SIGNALS OF AIR CONDITIONER CONTROLLER .................................... 80-36
INSTALLATION LOCATIONS OF AIR CONDITIONER PARTS AND ARRANGEMENT OF CONNECTORS ..
.......................................................................................................................................................... 80-38
TESTING AIR LEAKAGE (DUCT)......................................................................................................... 80-42
METHOD FOR TESTING AIR LEAKAGE (DUCT) ......................................................................... 80-42
TESTING AIR CONDITIONER USING SELF-DIAGNOSIS FUNCTION................................................ 80-44
HOW TO OPEN THE ELECTRICAL SYSTEM ABNORMALITY RECORD SCREEN IN SERVICE MODE
OF THE MACHINE MONITOR .......................................................................................................... 80-45
TEST VENT (MODE) CHANGEOVER .................................................................................................. 80-46
METHOD FOR TESTING VENT (MODE) CHANGEOVER ............................................................ 80-46
TESTING FRESH/RECIRC AIR CHANGEOVER.................................................................................. 80-48
METHOD FOR TESTING FRESH/RECIRC AIR CHANGEOVER .................................................. 80-48
TEST SUNLIGHT SENSOR.................................................................................................................. 80-49
METHOD FOR TESTING SUNLIGHT SENSOR............................................................................ 80-49
TEST (DUAL) PRESSURE SWITCH FOR REFRIGERANT.................................................................. 80-50
METHOD FOR TESTING (DUAL) PRESSURE SWITCH FOR REFRIGERANT............................ 80-50
TEST RELAYS...................................................................................................................................... 80-51
METHOD FOR TESTING RELAYS ................................................................................................ 80-51
AIR CONDITIONER TROUBLESHOOTING CHART 1 ......................................................................... 80-52
AIR CONDITIONER TROUBLESHOOTING CHART 2 ......................................................................... 80-53
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE........................................................... 80-56
FAILURE CODE [879AKA].................................................................................................................... 80-58
FAILURE CODE [879AKB].................................................................................................................... 80-59
FAILURE CODE [879BKA].................................................................................................................... 80-60
FAILURE CODE [879BKB].................................................................................................................... 80-62
FAILURE CODE [879CKA].................................................................................................................... 80-64
FAILURE CODE [879CKB].................................................................................................................... 80-65
FAILURE CODE [879DKZ].................................................................................................................... 80-66
FAILURE CODE [879EMC] ................................................................................................................... 80-68
FAILURE CODE [879FMC] ................................................................................................................... 80-69
FAILURE CODE [879GKX] ................................................................................................................... 80-70
A-1 TROUBLESHOOTING FOR POWER SUPPLY SYSTEM (AIR CONDITIONER DOES NOT OPERATE).
.......................................................................................................................................................... 80-72
A-2 TROUBLESHOOTING FOR COMPRESSOR AND REFRIGERANT SYSTEM (AIR IS NOT COOLED)...
.......................................................................................................................................................... 80-74
A-3 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS
ABNORMAL) ..................................................................................................................................... 80-77
A-4 TROUBLESHOOTING FOR FRESH/RECIRC AIR CHANGEOVER............................................... 80-79
TROUBLESHOOTING USING GAUGE PRESSURE............................................................................ 80-81
CONNECTION OF SERVICE TOOL ..................................................................................................... 80-84
METHOD FOR CONNECTING SERVICE TOOL ........................................................................... 80-84
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITION-
ER PIPINGS...................................................................................................................................... 80-86
HANDLE COMPRESSOR OIL .............................................................................................................. 80-88
90 CIRCUIT DIAGRAMS ............................................................................................................................... 90-1
CONTENTS ............................................................................................................................................ 90-2
ABBREVIATION LIST ............................................................................................................................. 90-3
HYDRAULIC CIRCUIT DIAGRAM .......................................................................................................... 90-9
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM .................................................................. 90-9
HYDRAULIC CIRCUIT DIAGRAM ................................................................................................. 90-13
ELECTRICAL CIRCUIT DIAGRAM ....................................................................................................... 90-15
SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM............................................................... 90-15
ELECTRICAL CIRCUIT DIAGRAM (1/8)........................................................................................ 90-19
ELECTRICAL CIRCUIT DIAGRAM (2/8)........................................................................................ 90-21
ELECTRICAL CIRCUIT DIAGRAM (3/8)........................................................................................ 90-23
ELECTRICAL CIRCUIT DIAGRAM (4/8)........................................................................................ 90-25
PC360LC-11,PC390LC-11
INDEX
00-17