Lincoln Electric Pro-MIG 140 User Manual download pdf (Page 30)

F-1

DIAGRAMS

F-1

Pro-MIG 140

WARNING

HIGH VOLTAGE

can kill

Only qualified persons should install, use or service this machine.

Do not operate with covers removed.

Disconnect input power by unplugging power cord before servicing.

Do not touch electrically live parts

M20801

SWITCH

204

203

59,000 f

40V

203

204

ELECTRICAL SYMBOLS PER E1537

CAVITY NUMBERING SEQUENCE

( COMPONENT SIDE OF BOARD )

539

541

GUN TRIGGER

THERMOSTAT

208

WIRE SPEED

(W)

(B)

N.C.

N.C. COMPONENT VIEWED FROM REAR.

ON-OFF

N.C.

209

WINDING

24V

AUXILIARY

FAN MOTOR

202

SELECTOR

SWITCH

CIRCUIT

BREAKER

115V/60HZ

OUTPUT

CHOKE

541

204

203

209

208

539

213

214

1234

LATCH

678910

1234

8910

GAS

SOLENOID

CONTROL P.C. BOARD

CR1

LS1

N.O.

214

N.B.

N.D.

N.A.

N.D.

TO EARTH GROUND PER

NATIONAL, LOCAL OR

OTHER APPLICABLE

ELECTRICAL CODES.

(MOUNTED TO

SEC. COIL)

WIRE

FEED

MOTOR

CASE

GROUNDING

STUD

N.A. DIODES D2 & D4 ARE MOUNTED

ON THE OUTSIDE HEATSINK.

N.B. DIODES D1 & D3 ARE MOUNTED

ON THE INSIDE HEATSINK, WHICH

IS CLOSEST TO THE CENTER PANEL.

N.D. BOLTED ALUMINUM CONNECTIONS

LEAD COLOR CODE:

B-BLACK

W-WHITE

REQUIRE T12837 JOINT COMPOUND

(DOW CORNING 340) WHEN REATTACHING.

213

WORK

GUN CABLE

CONDUCTOR

BLOCK

WIRING DIAGRAM

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The

specific diagram for a particular code is pasted inside the machine on one of the enclosure panels.

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 65 66

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Lincoln Electric Pro-MIG 140 User Manual Page 30

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