Carrier 69NT40-489-100 Series - Page 18

iv
T-305
TABLE OF CONTENTS -- Continued
PARAGRAPH NUMBER Page
4.5 CONNECT REMOTE MONITORING RECEPTACLE 46......................................
4.6 STARTING AND STOPPING INSTRUCTIONS 46...........................................
4.6.1 Starting the Unit 46...................................................................
4.6.2 Stopping the Unit 46..................................................................
4.7 START--UP INSPECTION 46.............................................................
4.7.1 Physical Inspection 46................................................................
4.7.2 Check Controller Function Codes 46....................................................
4.7.3 Complete Inspection 47...............................................................
4.8 PRE-TRIP DIAGNOSIS 47...............................................................
4.9 OBSERVE UNIT OPERATION 48.........................................................
4.9.1 Crankcase Heater 48.................................................................
4.9.2 Probe Check 48.....................................................................
4.10 SEQUENCE OF OPERATION 48...........................................................
4.10.1 Sequence Of operation -- Perishable Mode -- Cooling 50...................................
4.10.2 Sequence Of Operation -- Perishable Mode -- Heating 50..................................
4.10.3 Sequence Of Operation -- Frozen Mode -- Cooling 50.....................................
4.10.4 Sequence Of Operation -- Defrost Mode 51..............................................
4.11 EMERGENCY OPERATION 52...........................................................
4.11.1 Emergency Bypass Operation 52......................................................
4.11.2 Emergency Defrost Operation. 52......................................................
TROUBLESHOOTING 53.........................................................................
5.1 UNIT WILL NOT START OR STARTS THEN STOPS 53......................................
5.2 UNIT OPERATES LONG OR CONTINUOUSLY IN COOLING 53..............................
5.3 UNIT RUNS BUT HAS INSUFFICIENT COOLING 54........................................
5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING 54................................
5.5 UNIT WILL NOT TERMINATE HEATING 54................................................
5.6 UNIT WILL NOT DEFROST PROPERLY 54................................................
5.7 ABNORMAL PRESSURES (COOLING) 55.................................................
5.8 ABNORMAL NOISE OR VIBRATIONS 55..................................................
5.9 REFRIGERATION CONTROLLER MALFUNCTION 55.......................................
5.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW 56..............................
5.11 THERMOSTATIC EXPANSION VALVE MALFUNCTION 56...................................
5.12 AUTOTRANSFORMER MALFUNCTION 56................................................
5.13 WATER-COOLED CONDENSER OR WATER PRESSURE SWITCH 56........................
SERVICE 57....................................................................................
6.1 SECTION LAYOUT 57...................................................................
6.2 SERVICE VALVES 57....................................................................
6.3. MANIFOLD GAGE SET 57...............................................................
6.4 PUMPING THE UNIT DOWN 59..........................................................
6.5 REFRIGERANT LEAK CHECKING 59.....................................................