Eastwood MIG 175, Руководство по обслуживанию

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Eastwood Technical Assistance: 800.343.9353 >> tech@eastwood.com
TROUBLESHOOTING TABLE
See page 17 for test points and values.
See page 18 for parts location.
SYMPTOM POTENTIAL PROBLEM DIAGNOSTIC TEST SOLUTION
Unit Powers up
- Torch Trigger Pulled
- Drive Roller Turning
- Audible Click of Solenoid
when Trigger Pulled
- No Gas Flow
Gas bottle closed or empty
Check bottle fill and make sure
valve is open
Fill gas bottle or open valve
Gas Flow restriction
Check gas lines and connections
for blockage for loose
connections (including torch)
Re-attached, repair, or replace
gas lines as needed
Unit Powers up
- Torch Trigger Pulled
- Drive Roller Turning
- No Audible Click of
Solenoid when Trigger
Pulled
- No Gas Flow
Open or loose wiring in Gas
Solenoid Circuit
Visual and continuity check of
gas solenoid wiring
Repair loose/open in Gas
Solenoid Circuit
Faulty Gas solenoid
Check voltage at CON 8 with
Gun Trigger Pulled. Should be
240V AC.
If voltage = 240V AC, replace
Gas Solenoid.
Faulty Control Board
Check voltage at CON 8 with
Gun Trigger pulled. Should be
240V AC.
If no voltage, replace Control
Board
Unit Powers up
- Torch Trigger Pulled
- Drive Roller Turning
- Gas flowing
- Low or no weld output
Low Input Line Voltage
Check A/C Voltage at Wall Outlet
(240V AC)
Repair cause of low line voltage
Poor Ground Connection
Check quality of Ground
Connection
Ensure good metal to metal
ground contact
Loose or Open Connection in
Ground Circuit
Ground Cable for Loose
Connections
Repair or replace ground cable
Poor Weld Surface Condition
Check condition of welding
surface for dirt, oil, paint, rust
etc.
Clean surface with appropriate
cleaner and/or wire brush
Worn Contact Tip Check condition of Contact Tip Replace Contact Tip
Damaged Torch
Check condition of torch weld
cable for damage
Replace Torch
Faulty Control Board
With torch trigger pulled, check
voltage across pin 2 on CON 1
and pin 1 on CON 3.
If no voltage, replace Control
Board
Faulty Transformer or Rectifier
With torch trigger pulled, check
voltage across pin 2 on CON 1
and pin 1 on CON 3.
If voltage present, Replace
Welder