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F-33

TROUBLESHOOTING & REPAIR

F-33

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

PROBLEMS

 

POSSIBLE AREAS OF

RECOMMENDED

 

 

(SYMPTOMS)

 

MISADJUSTMENTS(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

FUNCTION PROBLEMS

 

 

 

 

 

The flux or gas/water solenoid does 1.

Make sure the switch on the flux

1. If light 7G, located on the logic

not function (open).

hopper is in the ON position.

board, does light when the flux

 

 

 

 

(gas/water) solenoid is normally

 

2.

Check light 7G located on the

active, check the CR1 relay.

 

 

 

 

logic board. This light should be

Normal coil resistance is 10,000

 

 

 

on when the flux valve would nor-

ohms. The contacts (terminals 2

 

 

 

mally be active. If light 7G does

and 4) should “close” when

 

 

 

 

not light the logic board may be

110VDC is applied to the relay coil

 

 

 

faulty.

(terminals 1 + and 3 -).

 

 

 

 

 

2. Check the wiring harness for

 

 

 

 

loose or faulty connections

 

 

 

 

 

between the CR1 relay, the logic

 

 

 

 

board, the TS2 terminal strip and

 

 

 

 

the flux receptacle. See wiring

 

 

 

 

diagram.

 

The flux or gas/water solenoid con- 1.

Check light 7G located on the

1. Check the CR1 relay. The con-

tinuously remains open.

logic board. This light should be

tacts (terminal 2 and 4) should

 

lit only when the flux valve would

“close” only when 110VDC is

 

normally be active. If light 7G is

applied to the relay coil. (termi-

 

lit continuously the logic board

nals 1+ and 3-). If the contacts

 

may be faulty.

are “closed” continuously replace

 

 

the CR1 relay.

2.

Check to make sure the solenoid

 

 

is not stuck in the open position.

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.

NA-5

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Lincoln Electric NA-5NF, NA-5SF service manual Function Problems

NA-5S, NA-5N, NA-5SF, NA-5NF specifications

The Lincoln Electric NA-5NF, NA-5SF, NA-5N, and NA-5S are advanced welding helmets that are pivotal in enhancing the safety and efficiency of welders in various applications. These models are designed to provide exceptional protection and visibility, making them indispensable tools in the welding industry.

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