Miller LF30 Owner's manual

Brand: Miller

Model: LF30

Type: Owner's manual

This manual is also suitable for

OWNER’S MANUAL OM-226 339A

September 2005

RFCS-14HD (300 108) For PipePro 450 RFC

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 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.

Cylinders contain gas under high pressure and can ex-

plode if damaged. Never let a welding electrode touch

any cylinder. Always secure cylinder to running gear,

wall, or other stationary support.

Hot parts can cause burns. Welding makes parts very

hot − let them cool before touching.

Wear safety glasses with side shields.

The RFCS (Remote Foot Control Switch) is equipped with a 14-pin plug for

connecting to the welding power source.

NOTE

2. Installation And Operation

A. Controls

804 365-A

1 RFCS (Remote Foot Control

Switch)

2 14-Pin Plug

3 Foot Pedal

Press pedal lightly to turn weld

output and gas flow on. Press

pedal further to increase weld

output. Release pedal to turn off

weld output and gas flow.

Off

Unit

Output

OM-226 339 Page 2

3. Installation And Operation

B. Typical Connection

804 366-A

Turn Off welding power source.

1 Welding Power Source

2 Volt Sense Cable

Connect plug on end of volt sense

cable to volt sense receptacle on

front of welding power source.

3 Interconnect Cable

Connect 72-pin connector to I/O

receptacle RC72 on rear of power

source. Connect 10-pin connector

into wirefeed receptacle RC8 on

rear of power source.

4 Negative (−) Weld Cable

5 Positive (+) Weld Cable

6 Workpiece

7 14-Pin Foot Control Cable

8 Foot Control

Insert plug into matching 14-socket

receptacle on interconnect cable.

Tighten collar.

9 TIG Torch

10 Gas Hose

11 Gas Cylinder

OM-226 339 Page 3

C. Adjusting Potentiometer Timing

Disconnect foot control from

welding power source/generator.

Turn unit upside down, and remove

bottom plate.

1 Label

2 Gear

Turn gear on potentiometer shaft

counterclockwise as far as possible.

Pull drive belt tight and mesh belt

teeth with gear teeth.

Connect free end of small spring

into end of drive belt.

Reinstall bottom plate

BEFORERE−INSTALLINGBELT,TURNGEARALL

THEWAYTOTHESTOP.

ANTESDEVOLVERAINSTALARLACORREADÉ

VUELTAALENGRANAJETODOLONECESARIO

HASTAQUESEDETENGA.

AVANTDEREPOSERLACOURROIE,FAIRE

PIVOTERL’AXEJUSQU’ÀLABUTÉE.

218006−A

D. Changing Cord Location

Disconnect foot control from

welding power source/generator.

1 Bottom Plate

Turn unit upside down, and remove

bottom plate.

Remove screw that holds cord in

its factory installed location.

2 Cord Slots

Position cord in desired slot.

Slide strain relief down cord and

into slot to protect cord. Secure

cord with screw in the same

manner in which it came from the

factory.

Reinstall bottom plate

804 367-A

4. Circuit Diagram

226 337-A

OM-226 339 Page 4

5. Parts List

804 368-A

Quantity

Description

Part

No.

Dia.

Mkgs.

Item

No.

1 182 030 Belt 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 185 929 Pedal / housing / bottom 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 198 036 Bottom Plate 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 182 627 Spring 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 S1 183 629 Switch, limit 10A 125/250V 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 PGL1 131 204 Connector & Sockets 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 199 410 Cable 21’. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

199 409 Strain Relief 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 PLG2 215 031 Connector 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

200 545 Connector, clamp str 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 182 626 Spring 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 R1 183 956 Potentiometer 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 RC1 131 203 Connector & Sockets 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 C1, 2 028 291 Capacitor 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BE SURE TO PROVIDE MODEL WHEN ORDERING REPLACEMENT PARTS.