Carrier 69NT40-489-100 Series, Operation And Service Manual

Page: 159 / 178

135
T-305
PART THREE -- ELECTRICAL WIRING SCHEMATICS AND DIAGRAMS
SECTION 13
REFRIGERATION CONTROLS
13.1 INTRODUCTION
This section contains the refrigeration unit Schematics and Wiring Diagram. The diagrams are presented as follows:
Figure 85 Provides the legend for use with all figures.
Figure 86 Provides the schematic diagram.
Figure 87 Supplements the Figure 86 and provides schematics for the NatureFRESH.
Figure 88 Provides the wiring diagram.
Sequence of operation descriptions for the various modes of operation are provided in section 4.10, page 48.
SYMBOL DESCRIPTION (Schematic Location)
AMBS AMBIENT SENSOR (C--19)
CB1 CIRCUIT BREAKER -- 460 VOLT (J--1)
CB2 CIRCUIT BREAKER -- AUTO TRANSFORMER (D--1)
CCH CRANKCASE HEATER (T--11)
CF CONDENSER FAN CONTACTOR (M--9, P--6)
CFS CONDENSER FAN SWITCH (L--9)
CH COMPRESSOR CONTACTOR (M--8, G--6, P--1)
CI COMMUNICATIONS INTERFACE MODULE (A--3)
CL COOL LIGHT (M--8)
CM CONDENSER FAN MOTOR (T--6)
CP COMPRESSOR MOTOR (T--1)
CPT CONDENSER PRESSURE TRANSDUCER (G--20)
CPDS COMPRESSOR DISCHARGE SENSOR (A--18)
CPSS COMPRESSOR SUCTION SENSOR (D--18)
CS CURRENT SENSOR (M--2)
DHBL DEFROST HEATER -- BOTTOM LEFT (T--4)
DHBR DEFROST HEATER -- BOTTOM RIGHT (T--4)
DHH DRAIN HOSE HEATER (L--13)
DHTL DEFROST HEATER -- TOP LEFT (T--4)
DHTR DEFROST HEATER -- TOP RIGHT (R--4)
DL DEFROST LIGHT (M--12)
DPH DRAIN PAN HEATER (R--4)
DPT DISCHARGE PRESSURE TRANSDUCER (J--19)
DTS DEFROST TEMPERATURE SENSOR (C--18)
DVM DUAL VOLTAGE MODULE (E--1)
DVR DUAL VOLTAGE RECEPTACLE (F--2)
EF EVAPORATOR FAN CONTACTOR [HIGH]
(L--10, M--10, P--8)
EM EVAPORATOR FAN MOTOR (T--8, T--9)
ES EVAPORATOR FAN CONTACTOR [LOW]
(L--10, M--10, R--8)
F FUSE (C--7)
FDH FUSE -- DRAIN LINE HEATER (F--13)
FH FUSE -- HUMIDITY (Figure 87)
HA HUMIDITY ATOMIZER (Figure 87)
HHT HOSE HEATER THERMOSTAT (J--13)
HM HOUR METER (M--7)
HPR HUMIDITY POWER RELAY (Figure 87)
HPS HIGH PRESSURE SWITCH (J--8)
HPT HUMIDITY POWER TRANSFORMER (Figure 87)
HR HEATER CONTACTOR (M--11, P--3)
HS HUMIDITY SENSOR (F--19)
HST HOSE HEATER SAFETY THERMOSTAT (G--13)
LEGEND
SYMBOL DESCRIPTION (Schematic Location)
HTT HEAT TERMINATION THERMOSTAT (F--11)
HWH HUMIDITY WATER HEATER (Figure 87)
HWP HUMIDITY WATER PUMP (Figure 87)
IC INTERROGATOR CONNECTOR [FRONT/REAR]
(P--18, P--19)
IP INTERNAL PROTECTOR (E--7, E--10, G10)
IRL IN RANGE LIGHT (M--14)
PDR PUMP DIRECTION RELAY (Figure 87)
PE PRIMARY EARTH (J--2)
PR PROBE RECEPTACLE [USDA]
(E--18, L--19, M--19, N--219
RM REMOTE MONITORING RECEPTACLE
(M--8, M--12, M--13)
RRS RETURN RECORDER SENSOR (C--19 or M15)
RTS RETURN TEMPERATURE SENSOR (B--19)
SD STEPPER MOTOR DRIVE (C--19)
SMV SUCTION MODULATING VALVE (A--19)
SPT SUCTION PRESSURE TRANSDUCER (H--19)
SRS SUPPLY RECORDER SENSOR (K--19)
ST START -- STOP SWITCH (K--6)
STS SUPPLY TEMPERATURE SENSOR (C--190)
TBU TRANSFORMER BRIDGING UNIT (D--2)
TC CONTROLLER RELAY -- COOLING (K--8)
TD CONTROLLER RELAY -- WATER
PUMP/ATOMIZER (Figure 87)
TE CONTROLLER RELAY -- HIGH
SPEED EVAPORATOR FANS
(Figure 86 = K--10)
TF CONTROLLER RELAY -- DEFROST (K--12)
TH CONTROLLER RELAY -- HEATING (K--13)
TI CONTROLLER RELAY -- IN RANGE (K--3) OR
WATER PUMP REVERSE (Figure 87)
TN CONTROLLER RELAY -- CONDENSER FAN (K--9)
TP TEST POINT (E--15, G--9, J--7, J--10, J--11, M--14,
Figure 87)
TQ CONTROLLER RELAY -- WATER TANK HEATER
(Figure 87)
TR TRANSFORMER (M--3)
TRANS AUTO TRANSFORMER 230/460 (D--3)
TV
CONTROLLER RELAY -- LOW SPEED EVAPORATOR
FANS (Figure 86 = K--10)
WH WATER HEATER RELAY (Figure 87)
WHTT WATER HEATER TERMINATION THERMOSTAT
(Figure 87)
WP WATER PRESSURE SWITCH (E--9)
Figure 85. Legend