7-1
T-309
SECTION 7
ELECTRICAL WIRING SCHEMATIC
7.1 INTRODUCTION
This section contains the Electrical Schematics and Wiring Diagrams. The diagrams are presented as follows:
Figure 7-1 Provides the legend for use with all figures.
Figure 7-2 Provides the basic schematic diagram.
Figure 7-3 Provides the basic wiring diagram.
Sequence of operation descriptions for the various modes of operation are provided in paragraph 4.9
SYMBOL
DESCRIPTION (Schematic Location)
AMBS
AMBIENT SENSOR (C--21)
C
CONTROLLERS (H-21, H-23)
CB1
CIRCUIT BREAKER -- 460 VOLT (J--1)
CB2
CIRCUIT BREAKER -- AUTOTRANSFORMER (C--1)
CF
CONDENSER FAN CONTACTOR (M--12, N--5)
CI
COMMUNICATIONS INTERFACE MODULE (A--3)
CL
COOL LIGHT (J--7)
CM
CONDENSER FAN MOTOR (H--12, T-5)
CP
COMPRESSOR MOTOR (T--1)
CPDS
COMPRESSOR DISCHARGE SENSOR (A--22)
CPSS
COMPRESSOR SUCTION SENSOR (D--21)
CR
CHART RECORDER [TEMPERATURE RECORDER]
(K-16)
CS
CURRENT SENSOR (M--1)
DHBL
DEFROST HEATER -- BOTTOM LEFT (T--4)
DHBR
DEFROST HEATER -- BOTTOM RIGHT (R--4)
DHTL
DEFROST HEATER -- TOP LEFT (T--4)
DHTR
DEFROST HEATER -- TOP RIGHT (R--4)
DL
DEFROST LIGHT (J--6)
DPT
DISCHARGE PRESSURE TRANSDUCER (J--22)
DTS
DEFROST TEMPERATURE SENSOR (B--22)
DVM
DUAL VOLTAGE MODULE (D--1)
DVR
DUAL VOLTAGE RECEPTACLE (F--1)
E1
EVAPORATOR FAN CONTACTOR [HIGH]
(L--13,L--14,P--7,P--10)
EM
EVAPORATOR FAN MOTOR (E--13,G--13,T--8,T--11)
ES
EVAPORATOR FAN CONTACTOR [LOW]
(M--14,P--7,P--11)
ESV
ECONOMIZER SOLENOID VALVE (K--17)
F
FUSE (C--6,D--20,E--20,H--4)
FLA
FULL LOAD AMPS
HPS
HIGH PRESSURE SWITCH (G--11)
HR
HEATER CONTACTOR (L--15, N--3)
HS
HUMIDITY SENSOR (F--21)
HTT
HEAT TERMINATION THERMOSTAT (G--15)
IC
INTERROGATOR CONNECTOR [FRONT/REAR]
(P--22,P--21)
IP
INTERNAL PROTECTOR (E--13,G--13,H--12)
IRL
IN RANGE LIGHT (J8)
LIV
LIQUID INJECTION SOLENOID VALVE (K-18)
MDS
MANUAL DEFROST SWITCH (E--19)
LEGEND
SYMBOL
DESCRIPTION (Schematic Location)
ORV
OIL RETURN SOLENOID VALVE (N--24, H-9)
PA
COMPRESSOR PHASE CONTACTOR (L--11,M--10,P1)
PB
COMPRESSOR PHASE CONTACTOR (L--10,M--11,P2)
PR
PROBE RECEPTACLE [USDA]
D--21,L--22,M--22)
RM
REMOTE MONITORING RECEPTACLE
(J-6,J--7,K--6,K--7,K--8)
RRS
RETURN RECORDER SENSOR (K--21)
RTS
RETURN TEMPERATURE SENSOR (B--21)
SMV
SUCTION MODULATING VALVE (K--24)
SPT
SUCTION PRESSURE TRANSDUCER (H--21)
SRS
SUPPLY RECORDER SENSOR (K--22)
ST
START -- STOP SWITCH (K--4)
STS
SUPPLY TEMPERATURE SENSOR (A--21)
TCC
TransFRESH COMMUNICATIONS
CONNECTOR (D-4)
TD
CONTROLLER RELAY -- COOLING (H11)
TE
CONTROLLER RELAY -- HIGH
SPEED EVAPORATOR FANS
(K--13)
TFC
TransFRESH CONTROLLER (G--5)
TH
CONTROLLER RELAY -- HEATING (K--15)
TN
CONTROLLER RELAY -- CONDENSER FAN (K--12)
TP
TEST POINT (F--17,G--12,H--11,J--12,
J--13,J--15,M--19)
TR
TRANSFORMER (M--3)
TRANS AUTO TRANSFORMER 230/460 (D--1)
TRC
TransFRESH REAR CONNECTOR (E--5)
TS
CONTROLLER RELAY -- ECONOMIZER SOLENOID
VALVE (E--17)
TT
CONTROLLER RELAY -- COOLING (C--11)
TU
CONTROLLER RELAY -- UNLOADER SOLENOID
VALVE (E--16)
TV
CONTROLLER RELAY -- LOW SPEED EVAPORATOR
FANS (K--14)
T1
CONTROLLER RELAY -- RM COOL (G--7)
T2
CONTROLLER RELAY -- RM DEFROST (G--6)
T4
CONTROLLER RELAY -- RM INRANGE (G--8)
T6
CONTROLLER RELAY -- COMPRESSOR PHASE
SEQUENCING (K--10,K--11)
USV
UNLOADER SOLENOID VALVE (K--16)
WP
WATER PRESSURE SWITCH (E--12)
Figure 7-1 LEGEND
