4.2.4 Removing the Manifold Gauge Set ........ 28
4.3 REMOVING THE REFRIGERANT CHARGE ....... 28
4.4 REFRIGERANT LEAK CHECKING ...................... 29
4.5 EVACUATION AND DEHYDRAYION ................ 29
4.5.1 Preparation ............................................. 29
4.5.2 Procedure for evacuation and dehydrating
the system ....................................................... 29
4.6 CHARGING THE REFRIGERATION SYSTEM ..... 30
4.7 LOW SIDE PUMP DOWN ................................ 31
4.8 CHECKING THE REFRIGERANT CHARGE ......... 31
4.9 CHECKING AND REPLACING FILTER-DRIER .... 32
4.9.1 Checking Filter-Drier................................... 32
4.9.2 Replacing the Filter-Drier ........................... 32
4.10 PRESSURE SWITCHES ................................... 33
4.10.1 Removing switches ............................... 33
4.10.2 Testing Pressure Switch........................ 33
4.11 COMPRESSOR .......................................... 34
4.11.1 Removal ................................................ 34
4.11.2 Installation ............................................ 34
4.11.3 System Compressor and Oil ................. 34
4.11.4 Adding extra oil to the system ............. 34
4.11.5 Checking the oil level............................ 34
4.12 HOT GAS & CONDENSER SOLENOID VALVE &
COILS ................................................................... 35
4.12.1 Diagnosis of solenoid coils ................... 35
4.12.3 Diagnosis of solenoid valves ................. 35
4.12.3 Replacing solenoid coil ......................... 36
4.12.4 Replacing Valve Internal Parts .............. 37
4.13 BRAZING PROCEDURES ............................... 37
4.14 THERMOSTATIC EXPANSION VALVE ............ 38
4.14.1 Expansion Valve Superheat Check &
Adjustment ...................................................... 39
4.14.2 Diagnosing Expansion valves ................ 40
4.14.3 Replacing expansion valve ................... 40
4.15 ADJUSTING THE CPR VALVE ........................ 40
4.16 TESTING DEFROST SYSTEM ......................... 41
4.17 STRUCTURAL MAINTENANCE ...................... 42
4.17.1 Unit Inspection ..................................... 42
4.17.2 Evaporator Coil ..................................... 42
4.17.3 Condenser Coil ...................................... 42
4.17.4 Condensor Mounting Bolts ................... 42
4.18 ELECTRICAL MAINTENANCE ..................... 43
4.18.1 In-cab controller .................................... 43
4.18.2 Unit is not working in electric mode 43
4.18.3 Electric standby circuits ........................ 43
4.18.4 DC Motor Maintenance ........................ 44
SECTION 5 - Diagnosis .............................................. 45
5.1 TROUBLESHOOTING TOPICS .......................... 45
5.2 TROUBLESHOOTING BY SYMPTOM ................ 47
5.3 TROUBLESHOOTING BY ALARM CODE ........... 53
SECTION 6 – Temperature and Pressure ................. 56
6.1 VAPOR TEMP/PRESSURE RELATIONSHIP ....... 56
6.2 PRESSURES AT 100⁰F
AMBIENT ..................... 57
Section 7 – Parameter Values .................................. 57
7.1 Parameter Issues ............................................ 57
Common Parameter issues .............................. 57
7.2 SETTING VALUES single-temperature - R404a/R134a -
without stand-by option ...................................... 58
7.3 SETTING VALUES single-temperature - R404a/R134a -
with stand-by option ............................................ 59
SECTION 8 - Wiring diagrams ................................... 60
8.1 Z1001N REV.2 ................................................. 61
8.2 Z1006 REV.2 ................................................... 62
8.3 Z1006N REV.3 ................................................. 63
8.4 WIRING DIAGRAM KEY ................................... 64
Содержание Zer0 120
Страница 1: ...Zer0 120 0WSMZ120 Workshop Manual ...
Страница 15: ...8 Figure 1 Z120 Condensing Section Components ...
