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TM-944 Page 23Handler 135 / 175
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Voltage Readings
a) Tolerance − ±10 % unless
specified
b) Wiring Diagram − see Section 8
V1 115 volts ac with power cord plugged in
V2 115 volts ac with Power switch S1 On
V3 24 volts ac with Power switch S1 On
V4 30 volts dc with Power switch S1 On
V5 27 volts dc with gun trigger pressed
V6 115 volts ac with gun trigger pressed
V7 115 volts ac with gun trigger pressed
V8, 15.5 volts ac with Voltage switch S2
V9 in position 1
17.0 volts ac with Voltage switch S2
in position 2
18.5 volts ac with Voltage switch S2
in position 3
20.5 volts ac with Voltage switch S2
in position 4
V10 20.5 volts dc with Voltage switch S2
in position 1
22.5 volts dc with Voltage switch S2
in position 2
25.0 volts dc with Voltage switch S2
in position 3
27.5 volts dc with Voltage switch S2
in position 4
V11 12 to 19 volts dc from min. to max. of
Wire Speed control R1 with
Voltage switch S2 in position 1
13 to 21 volts dc from min. to max. of
Wire Speed control R1 with
Voltage switch S2 in position 2
15 to 23 volts dc from min. to max. of
Wire Speed control R1 with
Voltage switch S2 in position 3
17 to 26 volts dc from min. to max. of
Wire Speed control R1 with
Voltage switch S2 in position 4
Voltage
Switch S2
Position
Min.
RPM
Max.
RPM
Min.
IPM
Max.
IPM
1
2
3
4
50
60
70
80
155
170
190
215
190
230
265
300
585
640
715
800
Wire Diameter
And Type
*All tests done with .030-.035 liner in H-10 model 10 foot welding gun, smooth
groove drive roll.
Values are nominal depending on drive roll pressure and spool hub tension.
Resistance Values
a) Tolerance − ±10% unless specified
b) Turn Off unit and disconnect input
power before checking resistance
R1-R6 All values for T1 are less than 1 ohm
R7 Less than 1 ohm at minimum position of
Wire Speed control R1; 55k ohms at
maximum position of Wire Speed control R1
R8 Less than 1 ohm
R9 Less than 2 ohms with wire feed motor
disconnected from circuit
.030/.035 Solid
or Flux Core
194 324-C
Wire Speed And Drive Motor RPM Feeding Wire*
Min.
RPM
Max.
RPM
1
2
3
4
95
110
125
140
170
180
200
225
*All tests done with the pressure assembly
open, not feeding wire. Values are nominal.
Drive Motor RPM At No Load*
Voltage
Switch S2
Position