Service manual

7-- 2T--318
SYMBOL DESCRIPTION (Normal Schematic Location)
(Single Evap. Fan Schematic Location)
AMBS AMBIENT SENSOR (D--19) [D--23]
BM BYPASS MODULE (Figure 7-5)
CB1 CIRCUIT BREAKER -- 460 VOLT (J--1) [J--1]
CB2 CIRCUIT BREAKER -- AUTO TRANSFORMER (D--1)
[C--1]
CCH CRANKCASE HEATER (T--4) [T--4]
CF CONDENSER F A N CONT A CT OR (M--9, P--8) [M--9, P--8]
CFS CONDENSER FAN SWITCH (E --9) [F --10]
CH COMPRESSOR CONTACTOR (M--7, P--1, P3)
[ M -- 8 , N -- 1 , N -- 3 ]
CI COMMUNICATIONS INTERFACE MODULE (A--3) [A--3]
CL COOL LIGHT (M--11) [G--13]
CM CONDENSER FAN MOTOR (T--8) [T--8]
CP COMPRESSOR MOTOR (T--2) [T--1]
CPT CONDENSER PRESSURE TRANSDUCER (H--19) [H--23]
CPDS COMPRESSOR DISCHARGE SENSOR (B--18) [B--23]
CPSS COMPRESSOR SUCTION SENSOR (E--18)[D--23]
CR CHART RECORDER [TEMPERATURE RECORDER]
(Figure 7-6)
CS CURRENT SENSOR (M--2) [M--2]
DHBL DEFROST HEATER -- BOTTOM LEFT (R--7)[R--7]
DHBR DEFROST HEATER -- BOTTOM RIGHT (T--6) [T--6]
DHML DEFROST HEATER -- MIDDLE LEFT (R--6) [R--6]
DHMR DEFROST HEATER -- MIDDLE RIGHT (T--6) [T--6]
DHTL DEFROST HEATER -- TOP LEFT (R--6) [R--6]
DHTR DEFROST HEATER -- TO P RIGHT (T--7) [R--7]
DL DEFROST LIGHT (M--12) [L--15]
DPT DISCHARGE PRESSURE TRANSDUCER (K--19) [K--23]
DTS DEFROST TEMPERATURE SENSOR (D--18)[D--23]
DVM DUAL VOLTAGE MODULE (E --1) [D--1]
DVR DUAL VOLTAGE RECEPTACLE (F--2) [E--2]
E1 EVAPORATOR FAN CONTACTOR #1 [HIGH]
(P--8, H--11, J--11) [P--8, H--11, J--11]
E2 EVAPORATOR FAN CONTACTOR #2 [HIGH]
( J -- 1 1 , K -- 1 1 , P -- 1 0 ) [ J -- 1 1 , K -- 1 1 , P -- 1 0 ]
EB EMERGENCY BYPASS SWITCH (Figure 7-6)
EF EVAPORATOR FAN CONTACTOR [HIGH]
(M--10, P--10, P12) [M--10, P--10, P12]
EM EVAPORATOR F AN MOTOR (T--10, T--12) [T--10, T--12]
ES EVAPORATOR FAN CONTACTOR [LOW]
(M--1 1, R--10, R--11) [M--1 1, R--10, R--11]
F F U S E ( D -- 7 , R -- 4 ) [ C -- 6 , R -- 4 ]
FCR FUSE -- CHART RECORDER (Figure 7-6)
FED FUSE -- EMERGENCY DEFROST (E--5)
FH FUSE -- HUMIDITY (Figure 7-4)
FT FUSE -- TransFRESH (Figure 7-4)
HM HOUR METER (H--6)
LEGEND
SYMBOL DESCRIPTION (Normal Schematic Location)
(Single Evap. Fan Schematic Location)
HPS HIGH PRESSURE SWITCH (J--7) [H--8]
HR HEATER CONTACTOR (M--13, P--3) [M--14, N --6]
HS HUMIDITY SENSOR (G--19) [G--23]
HTT HEAT TERMINATION THERMOSTAT (H--12) [G--14]
IC INTERROGATOR CONNECTOR [FRONT/REAR]
(T--19, T--20) [T--23, T--24]
IP INTERNAL PROTECTOR (E--8, E--10, H--9, H10)
[ E -- 8 , G -- 8 , M -- 1 1 , M -- 1 3 ]
IRL IN RANGE LIGHT (M--13) [L--15]
MDS MANUAL DEFROST SWITCH (H--13) [F--16]
PE PRIMARY EARTH (J--3) [J--2]
PFC PFC POWER FACTOR CORRECTOR CAPACITOR
( R -- 3 ) [ R -- 3 ]
PR PROBE RECEPTACLE [USDA]
(F--18, M--19, N--19, P--19) [E--23, L--24, M--24, N--24]
RM REMOTE MONITORING RECEPTACLE
(M--1 1, M--12, M--13) [G--13, L--15, L--16]
RRS RETURN RECORDER SENSOR (C--18) [C--23]
RTS RETURN TEMPERATURE SENSOR (C--18) [C--23]
S1 EVAPORATOR FAN CONTACTOR #1 [LOW]
(Figure 7-3)
S2 EVAPORATOR FAN CONTACTOR #2 [LOW]
(Figure 7-3)
SMV SUCTION MODULATING VALVE (R--14) [R--17]
SPT SUCTION PRESSURE TRANSDUCER (J--19) [J--23]
SRS SUPPLY RECORDER SENSOR (L--19) [L--23]
ST START -- ST OP SWITCH (L--5) [J--4]
STS SUPPLY TEMPERATURE SENSOR (C--18) [B--23]
TBU TRANSFORMER BRIDGING UNIT
TC CONTROLLER RELAY -- COOLING (K --8) [J--8]
TCC TransFRESH COMMUNICATIONS
CONNECTOR (Figure 7-4)
TE CONTROLLER RELAY -- HIGH SPEED EVAP. FANS
(K--10) [J--10]
TF CONTROLLER RELA Y -- DEFROST (F--12) [F--15]
TFC TransFRESH CONTROLLER (Figure 7-4)
TH CONTROLLER RELAY -- HEATING (K--12) [J--12]
TI CONTROLLER RELAY -- IN RANGE (G--13) [G--15]
TN CONTROLLER RELAY -- CONDENSER FAN (K --9) [J--9]
TP TEST POINT (F--9,J--7, J--9, J--10, J--12, N--14)
[G--10, E--1 1, J--8, J--14, K--8, M--17]
TR TRANSFORMER (M--3) [L--2]
TRANS AUTO TRANSFORMER 230/460 (D--3) [C--3]
TRC TransFRESH REAR CONNECTOR (Figure 7-4)
TV CONTROLLER RELAY -- LOW SPEED EVAP. FANS
(K--11) [J--11]
WCR WETTING CURRENT RELAY (H--9) [J --10]
WP WATER PRESSURE SWITCH (D--9) [E--10]
Figure 7-1 LEGEND