Miller RHC-NT456-NPN Manuel utilisateur

OWNER’S MANUAL OM-235 844A

2007−10

RHC−NT456−NPN

1. Safety Symbol Definitions

Warning! Watch Out! There are possible hazards as

shown in the adjoining symbols. Have only trained and qualified persons install, operate,

or service this unit. Call your distributor if you do not

understand the directions. For WELDING SAFETY and

EMF information, read power source Manual.

Beware of electric shock from wiring. Keep all panels and

covers closed. Beware of electric shock from welding electrode or wiring.

Touching the electrode while in contact with the work or

ground can cause electric shock. Always wear dry

gloves. Keep all panels and covers closed.

Wear safety glasses with side shields.

2. Specifications And Connections

805 069-A / 805 090-A

1 RHC−NT456−NPN

2 RHC−NT Interconnect Cable

3 14-Pin Plug (Short Cord)

Connect to matching receptacle on

RHC remote control, or to optional

extension cord.

4 14-Pin Plug (Long Cord)

Connect to matching receptacle on

welding power source.

5 Metal Plug

Connect to matching receptacle on

wire feeder, or to customer supplied

extension cord.

6 Ring Terminal

Connect ring terminal to negative

(−) weld output terminal on welding

power source.

A 4-1/4 in

(108 mm)

B 5-1/2 in

(140 mm)

C 6-7/8 in

(175 mm)

OM-235 844 Page 2

3. Operation

234 989-A

1 Voltage/Amperage/Trim

Adjustment Control

Turn control clockwise to increase

value. The active value is displayed

on the power source displays, and

changes as the control knob is ro-

tated. Control can be adjusted while

welding.

2 Mode Switch

Use switch to select weld process.

When Panel is selected on the RHC

control, the welding process se-

lected on the welding power source

will be active. If either Pulse or MIG

is selected on the RHC control, it

becomes the active process and

overrides whatever process is se-

lected on the welding power

source.

!If the mode switch on the

welding power source is in a

electrode hot position, and

the mode switch on the RHC

is in the panel position, the

contactor is on.

4. Routine Maintenance

.Maintainmore often

during severe conditions.

!Disconnect power

before maintaining.

n= Check Z= Change ~= Clean l= Replace

* To be done by Factory Authorized Service Agent

Everyday Every 3

Months

Cord(s)

Move control from min to max nl n l

5. Troubleshooting

Trouble Remedy

No voltage control. Set switches and controls on welding power source (see welding power source Owner’s Manual).

Check weld output on welding power source (see welding power source Owner’s Manual).

Secure cord connections or replace cord, if necessary.

No output (contactor) control. Remote Hand Control switch in wrong position.

Check switch settings and weld output on welding power source (see welding power source Owner’s

Manual).

Secure cord connections or replace cord, if necessary.

OM-235 844 Page 3

6. Circuit Diagrams

235 072-A

RHC−NT456−NPN

OM-235 844 Page 4

7. Parts List

805 070-A

.Hardware is common and

not available unless listed.

Figure 7-1. Complete Assembly

Description

Part

No.

Dia.

Mkgs.

Item

No.

Figure 7-1. Complete Assembly

Quantity

1 234 992 WRAPPER, INSIDE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 NAMEPLATE, RHC−14 (ORDER BY MODEL AND SERIAL NUMBER) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 174 991 KNOB, POINTER 1.250 DIA X .250 ID W/SPRING CLIP−.21 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 604 645 NUT, 375−32 .56HEX .09H STL CAD USE W/POTS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 605 321 NUT, 468−32 .56HEX .09H BRS BLK USE W/SWITCHES 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 235 272 POTENTIOMETER, W/LEADS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 189 404 SPACER, NYLON .718 OD X .526 ID X .281 LG 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 235 271 SWITCH, W/LEADS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 234 996 CABLE, INTERCONNECT RHC−NT 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 234 994 RECEPTACLE, W/LEADS 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 234 766 CIRCUIT CARD ASSY, RHC-NT 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 +234 991 WRAPPER, OUTSIDE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13 085 220 LABEL,CAUTION ELECTRIC CIRCUIT 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14 190 512 STAND−OFF, NO 6−32 X .640 LG .250 HEX AL FEM 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+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.

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