Miller RHC-3-GD34A Owner's manual

Brand: Miller

Model: RHC-3-GD34A

Type: Owner's manual

This manual is also suitable for

OWNER’S MANUAL

 2002 MILLER Electric Mfg. Co.

OM-823 029 899P

October 2003

RHC-3, RHC-3GD34A, And

RHC-14 Remote Hand Controls

READ SAFETY BLOCKS in welding power

source Owner’s Manual before proceeding.

WARNING

1. Specifications And Connections

ST-141 127-A

1 Twistlock Plug

2 5- Or 14-Pin Amphenol Plug

Units are equipped with a 20 ft

(6 m) cord. If a longer cord is

required, see Table 3-1.

A 7-1/2 in

(191 mm)

B 9-1/2 in

(241 mm)

C 8-3/4 in

(222 mm)

2. Selecting Interconnecting Cord

Conductor Size (*AWG)

Cord Length Amperage Or Voltage Control RHC-14

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 No. 18 For Any Length

21 to 50 ft (6 to 15 m) No. 14

51 to 100 ft (16 to 31 m) No. 12

101 to 200 ft (31 to 61 m) No. 10

*AWG − American Wire Gauge

OM-823 Page 2

3. Adjusting Amperage Or Voltage

. On some welding power

sources, the front panel output

control setting does not matter

and the Remote Hand Control

adjusts the full range of the

welding power source output.

Ref. ST-122 023-A / Ref. ST-141 127-A / ST-039 411-D / Ref. ST-159 059 / Ref. ST-130 214-A

Example Of Remote Amperage Control Without Output (Contactor) Control

Set Switch Set Control Adjust Remote Amperage

Example Of Remote Amperage Control With Output (Contactor) Control

Min

(40 A)

Max

(200 A)

In Example: Min = 40 A In Range B,

Output = 120 A (50% of 40 to 200)

Max = 200 A In Range B

Set Switches Set Control

Min

(5 A)

Max

(200 A)

Place switch in On position for open-circuit

voltage. When switch is in Off position no

output is present.

In Example: Min = 5 A

Output = 200 A (100% of 5 to 200)

Max = 200 A

OM-823 Page 3

4. Routine Maintenance

Y Turn Off all power before maintaining.

3 Months

Everyday

Replace

Cracked

Parts

Replace

Unreadable

Labels

Cord(s)

Move Control From

Min. To Max.

5. Troubleshooting

Trouble Remedy

No amperage or voltage control. Set switches and controls on welding power source or generator (see Section 3*).

Check weld output on welding power source or generator.

Secure cord connections or replace cords, if necessary.

No output (contactor) control. Remote Hand Control switch in wrong position or control not so equipped.

Check switch settings and weld output on welding power source or generator.

Secure cord connections or replace cords, if necessary.

*See welding power source or generator Owner’s Manual.

6. Circuit Diagrams

SA-150 670-B

RHC-3

SA-094 231-B

RHC-3-GD34A

SA-053 656-A

RHC-14RHC-3 (100 ft)

210 458-A

OM-823 Page 4

7. Parts List

Description

Part

No.

Dia.

Mkgs.

Item

No.

Figure 7-1. Complete Assembly

Model

RHC-

Quantity

RHC-3

GD34A

RHC-

(100 f

1 R1 030 653 RHEOSTAT, WW 150W 15 ohm 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 R1 035 897 POTENTIOMETER, C sltd sft 1/T 2W 1K ohm 1. . . . . . . . . . . . . . . . . . . . . .

1 R1 605 960 RHEOSTAT, WW 300W 34 ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 085 220 LABEL, caution electric circuit 1 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 +021 475 WRAPPER 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 +014 417 WRAPPER 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 217 193 CASE SECTION, base/front/rear 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 109 974 CASE SECTION, base/front/rear 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 PLG1 605 797 PLUG, twlk 3P3W 20A 125V 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 PLG1 144 310 HOUSING PLUG & PINS, (consisting of) 1. . . . . . . . . . . . . . . . . . . . . . . .

134 732 TERMINAL, male 1 pin 24-20 wire 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

143 922 CLAMP, cable strain relief sz 17 & 20 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 PLG1 032 898 PLUG, twlk grd 2P3W 15A 125V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 217 028 BUSHING, strain relief 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 217 029 BUSHING, strain relief 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

217 030 NUT, locking strain relief 1/2 in npt .270 thick 1 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 106 945 CABLE, pwr 20ft 16ga 3/c 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 175 284 CABLE, pwr 20ga 5/c (order by ft) 20ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 600 349 CABLE, port No.14 3/c (order by ft) 20ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 600 795 CABLE, port No.12 3/c (order by ft) 100ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 186 019 LABEL, model/stock number 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 210 459 LABEL, model/stock number 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 097 926 KNOB, pointer 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 097 922 KNOB, pointer 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 148 723 KNOB, pointer 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 148 719 NAMEPLATE 1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 130 214 NAMEPLATE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 148 717 NAMEPLATE, RHC-3GD 34A 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

S1 011 609 SWITCH, tgl SPDT 15A 125VAC 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST-141 128-A

Figure 7-1. Complete Assembly (RHC-3 Illustrated)

+When ordering a component originally displaying a precautionary label, the label should also be ordered.

BE SURE TO PROVIDE MODEL AND STYLE NUMBER WHEN ORDERING REPLACEMENT PARTS.