Miller Electric OM-225A - Manual (Page 20)

OM-225 Page 18
4-4. Troubleshooting
Trouble Remedy
No pilot arc; difficulty in establishing an
arc. Clean or replace worn consumables as necessary (see torch Owner’s Manual).
Check for damaged torch or torch cable (see torch Owner’s Manual).
No cutting output; Power light off;
Trouble lights off; Ready light off; fan mo-
tor FM does not run. Place Power switch in On position.
Place line disconnect device in On position (see Section 2-7).
Check line fuse(s) and replace if needed or reset circuit breakers (see Sections 2-6 and 2-7).
No cutting output; Power light on; Ready
light on; Trouble lights off; fan motor FM
running. Be sure work clamp is connected.
Clean or replace worn consumables as necessary (see torch Owner’s Manual).
No cutting output; Power light on; Ready
light on; Trouble lights off; fan motor FM
running slowly. Check position of input voltage selector switch S2 (see Section 2-7).
Power light flashing. Check position of input voltage selector switch S2 (see Section 2-7).
Manual power reset is needed. Turn Power switch Off, then back On.
No control of output. Check position of input voltage selector switch S2 (see Section 2-7).
Have Factory Authorized Service Agent check control board PC1, and LED/pot board PC2.
No gas/air flow; Power light on; Ready
light on; Trouble lights off; fan motor FM
running. Have Factory Authorized Service Agent check for proper torch connections, and check control board
PC1. Check operation of gas valve GS1, and check gas/air system for leaks.
Pressure Trouble light On; Ready light
off. Check for correct gas/air pressure adjustment (see Section 3-1).
Check for sufficient gas/air supply pressure (see Section 2-5).
Check for dirty air filter/regulator and clean, if needed (see manufacturer’s instructions).
Cup Trouble light On; Ready light off. Check torch shield cup (see Section 4-3).
Have Factory Authorized Service Agent check for proper torch connections, and check LED/pot board
PC2.
Temperature Trouble light On; Ready
light off. Main transformer or output inductor overheating. Allow fan to run; the Trouble light goes out when the unit
has cooled.
Fan motor FM does not run; Power light
and Ready light both On. Have Factory Authorized Service Agent check fan motor connections.
Trouble lights not working. Have Factory Authorized Service Agent check LED/pot board PC2.
Sparks come out top of cut, or cut is not
clean. Torch travel speed too fast; reduce travel speed (see Sections 2-3 and 3-2).
Clean or replace worn consumables as necessary. See torch Owner’s Manual.
Metal being cut is too thick; increase Output control setting (see Section 3-1).
Be sure work clamp is securely attached (see Section 2-5).
Arc goes out while cutting. Make sure drag shield is contacting metal, or correct standoff distance is maintained if not using a drag
shield (see Section 3-2).
Be sure work clamp is securely attached (see Section 2-5).
Clean or replace worn consumables as necessary. See torch Owner’s Manual.
Arc goes on and off while cutting. Torch travel speed is too slow; increase travel speed (see Sections 2-3 and 3-2).
Clean or replace worn consumables as necessary. See torch Owner’s Manual.