OWNER’S MANUAL
1996 MILLER Electric Mfg. Co.
FORM: OM-826 029 900P
September 1997
RFC-23A, RFC-23AG,And RFC-23GD25A
Remote Foot Controls
See welding power source Owner’s Manual for all relative safety information.
1. Specifications And Connections
Ref. ST-141 294-A / ST-800 096
1 14- Or 5-Pin Amphenol Plug
2 Twistlock Plugs
Units are equipped with 20 ft (6 m)
cord(s). If a longer cord is required
see Section 2.
OR
2
1
A 7-1/2 in
(190 mm)
B 6-1/4 in
(159 mm)
C 11 in
(279 mm)
A
B
C
2. Selecting Interconnecting Cord For RFC-23A, RFC-23AG, And RFC-23GD25A
Amperage Or Voltage Control Contactor Control
Cord Length Conductor Size (AWG) Cord Length Conductor Size (AWG)
Up to 20 ft (6 m) No. 16
Up to 20 ft (6 m) (GD Models) No. 14
21 to 100 ft (6 to 30 m) (GD Models) No. 12
21 to 50 ft (6 to 15 m) No. 14
Up to 200 ft (61 m) No. 16
51 to 100 ft (16 to 31 m) No. 12
101 to 200 ft (31 to 61 m) No. 10
OM-826 Page 2
3. Adjusting Amperage Without Output (Contactor) Control
.
See welding power source
Owner’s Manual to determine
if Remote Foot Control works
as a fine or as full Amperage
control.
Ref. ST-122 023-A / Ref. ST-141 127-A / ST-039 411-D
EXAMPLE Of Fine Remote Amperage Control
OR
EXAMPLE Of Full Remote Amperage Control
Set Switch Set Desired Max.
Amperage For Application
Press Control To Adjust
Amperage
Control Setting
Unit Minimum
In Example:
Min = 30 A In Range A or 40 A
In Range B (Unit Minimum)
Max = 95 A In Range A or 200 A
In Range B (Control Setting)
Set Switch Control Setting
Does Not Matter
Press Control To Adjust
Amperage
Unit Maximum
In Example:
Min = 30 A In Range A or 40 A
In Range B (Unit Minimum)
Max = 225 A In Range A or 375 A
In Range B (Unit Maximum)
Unit Minimum
OM-826 Page 3
On
Off
. See welding power source
Owner’s Manual to determine
if Remote Foot Control works
as a fine or as full Amperage
control.
4. Adjusting Amperage Or Voltage With Output (Contactor) Control
Ref. ST-159 059
EXAMPLE Of Fine Remote Amperage Or Voltage Control
EXAMPLE Of Full Remote Amperage Or Voltage Control
Set Switches Set Control Press Control To Turn Weld Output On.
Release Control To Turn Weld Output Off.
Control Setting
Unit Minimum
On
Off
Set Switches Control Setting
Does Not Matter
Press Control To Turn Weld Output On.
Release Control To Turn Weld Output Off.
Unit Maximum
Unit Minimum
In Example:
Min = 5 A or 10 V (Unit Minimum)
Max = 200 A or 24 V (Control Setting)
In Example:
Min = 5 A or 10 V (Unit Minimum)
Max = 375 A or 36 V (Unit Maximum)
OR
OM-826 Page 4
5. Routine Maintenance
Everyday
Y Turn Off all power before
maintaining.
Move Control From
Min. To Max.
3 Months
Cord(s)
Replace
Cracked
Parts
Replace
Unreadable
Labels
6. Troubleshooting
Trouble Remedy
No amperage or voltage control. Set switches and controls on welding power source or generator (see Sections 3 and 4*).
Be sure welding power source Power switch is On.
Secure cord connections or replace cords, if necessary.
No output (contactor) control. Set switch on welding power source or generator (see Section 4*).
Be sure welding power source Power switch is On.
Secure cord connections or replace cords, if necessary.
*See welding power source or generator Owner’s Manual.
7. Electrical Diagrams
SA-162 462-A
Figure 7-1. Circuit Diagram For RFC-23A
OM-826 Page 5
SA-162 463-A
Figure 7-2. Circuit Diagram For RFC-23AG
SA-162 465
Figure 7-3. Circuit Diagram For RFC-23GD25A
OM-826 Page 6
8. Parts List
DescriptionPart No. RFC-23GD25ARFC-23AGRFC-23A
Quantity
Item No.
1 182 489 PIN, hinge 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 019 662 PEDAL, foot 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 009 490 PEDAL, foot 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 175 972 SPRING, torsion 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 +159 894 CASE SECTION, cover/end 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
085 220 LABEL, caution electric circuit etc 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 115 104 CONNECTOR, clp cable .500 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 053 786 CORD SET, pwr 115V 16ga 2/c 20ft 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 178 620 CORD SET, pwr 115V 16ga 3/c 20ft 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 136 971 CORD SET, pwr 115V 16ga 2/c 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 039 618 PLUG, twlk 2P 2W 20A 250V 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 035 494 PLUG, twlk grd 2P 3W 15A 250V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 605 797 PLUG, twlk 3P3W 20A 125V 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 039 621 PLUG, twlk 4P4W 20A 250V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 178 619 CABLE, pwr 20ft 16ga 3/c 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 604 834 CORD, port No 14 4/c (order by ft) 2ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 139 041 BUSHING, strain relief .455/.629 ID 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 014 920 CASE SECTION, base/side 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 019 663 MOUNT, nprn 4 4 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 011 628 SWITCH, limit 15A 125V 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 603 947 SWITCH, limit 10A 125V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 159 897 SCREW, shld stl sch .250-20 x .437 2 2 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 159 895 BAR, pedal control foot 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 010 795 ACTUATOR, switch limit 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 184 179 SPACER, support arm brush 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 159 892 BRACKET, support arm 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 159 893 ARM, brush holder 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 604 432 SCREW, cap stl sch 8-32 x 1.000 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 018 639 HOLDER, brush 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 *018 640 BRUSH, contact 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 161 306 CAP, brush holder 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24 079 625 WASHER, spring stl .500 shakeproof 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25 159 896 SCREW, shld stl sch .312-18 x .375 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 601 795 BOLT, mach stl hexhd .250-20 x 4.500 1 1 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 172 177 INSULATOR, resistor 2 2 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 175 266 RESISTOR, WW adj 130W 15 ohm 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 004 652 RESISTOR, WW adj 300W 25 ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29 601 855 NUT, weld .250-20 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 167 800 RING, rtng 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NAMEPLATE (order by model number) 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
14
21
22
23
7
6
5
4
3
1
2
8
9
10
11
12
13
17
20
19
27
28
29
25
24
14
15
16
30
Ref ST-145 917-E
BE SURE TO PROVIDE MODEL AND STYLE NUM-
BER WHEN ORDERING REPLACEMENT PARTS.
+When ordering a component originally displaying a precautionary la-
bel, the label should also be ordered.
*Recommended Spare Parts.
18
4
-
1
-
2
-
3
-
4
-
5
-
6
