TM 5-4940-200-35
DEVICE LEGEND
K3
OVERSPEED RELAY SWITCH
PS
110-VOLT RECEPTACLE CONNECTOR
RF
REVOLVING FIELD
OL
OVERLOAD RESET SWITCH
P6
110-VOLT RECEPTACLE CONNECTOR
S1
WELDING POLARITY CONTROL SWITCH
M1
AC VOLTMETER
P7
110-VOLT BODY CUTLET RECEPTACLE CONNECTOR
S2
WELD-OFF-ENGINE START SWITCH
A1
WELDER ARMATURE
M2
FREQUENCY METER
P8
110-VOLT BODY OUTLET RECEPTACLE CONNECTOR
S3
TEN-RANGE SWITCH
A2
EXCITER ARMATURE
M3
DC VOLTMETER
RI
MOTOR OPERATION RHEOSTAT
S4
REVERSE CURRENT RESET SWITCH
BCT
BATTERY-CHARGING TERMINALS
M4
DC AMMETER
R2
FIELD DISCHARGE RESISTOR ,300-OHM, 40-WATT
SS
BATTERY-CHARGING RATE SELECTOR
C1
CAPACITOR
M5
HOUR METER
R3
60 CYCLE OPERATION RESISTOR,-OHM, 40-WATT
56
MOTOR-GENERATOR SWITCH
C2
CAPACITOR
M6
BATTERY-CHARGING AMMETER
R4
WELDING RHEOSTAT
S7
S0-60 CYCLE SELECTOR SWITCH
EF
EXCITER FIELDS
MS
CIRCUIT BREAKER
RS
ENGINE STARTING CONTROL RHEOSTAT
SM
MOTOR-GENERATOR STATOR
HE
OVERLOAD SNITCH HEAT ELEMENT (45 AMPERE)
P1
220-VOLT RECEPTACLE CONNECTOR
R6
BATTERY-CHARGING RESISTOR, 100 WATT, 10 OHM
SHF
SHUNT FIELD
IP
INTERPOLE WINDING
P2
220-VOLT RECEPTACLE CONNECTOR
R7
BATTERY-CHARGING RESISTOR. 100 WATT, 10 OHM
SF
WELDER SERIES FIELD
K1
NO VOLTAGE RELEASE COIL
PT
220-VOLT RECEPTACLE CONNECTOR
R8
BATTERY-CHARGING BALLAST RESISTOR, 2.38-OHM
WO
WELDING ELECTRODE TERMINALS
NT
REVERSE CURRENT RELAY
P4
110-VOLT RECEPTACLE CONNECTOR
R9
OVERSPEED RESISTOR, 100T-WATT, 2,500-OHM
X1
AMMETER SHUNT
Figure 1. Schematic wiring diagram, model SECM.
5
