CHAPTER 6
GENERAL MAINTENANCE INSTRUCTIONS
Section I. SPECIAL TOOLS AND EQUIPMENT
82. Special Tools and Equipment
84. Specially Designed Tools and Equipment
No special equipment is required by direct and
No specially designed tools or equipment are required
general support and depot maintenance personnel for
by direct and general support and depot maintenance
performing maintenance on the welding machine.
personnel performing maintenance on the welding
machine.
83.
Direct and General Support and Depot
Maintenance Repair Parts
Direct and general support and depot maintenance
repair
parts
are
listed
in
Section II. TROUBLESHOOTING
85. General
This section provides information useful in diagnosing
Each trouble symptom stated is followed by a list of
and correcting unsatisfactory operation or failure of the
probable causes of trouble. The possible remedy
welding machine or its components.
recommended is described opposite the probable cause.
86. Weldering Will Not Start (Starter Not Operating)
Probable cause
Possible remedy
Defective operating coil ..............................................................Replace (para 92).
87. Starter Chatters
Probable cause
Possible remedy
Power supply inadequate ...........................................................Provide power supply which will provide adequate
voltage under load.
Low line voltage .........................................................................Check power source and increase voltage.
88. Welder Will Not Start
Probable cause
Possible remedy
Power source line circuit single-phased ......................................Replace fuse; repair open line.
Starter single-phased .................................................................Check motor phase voltages.
Open circuit in windings .............................................................Repair or replace stator (para 93).
89. Welder Starts but Will Not Deliver Welding Current
Probable cause
Possible remedy
Series field and armature circuit open ........................................Check with test lamp or bell ringer.
Wrong driving speed ................................................................... Check generator nameplate against speed of motor.
Dirt grounding field coils..............................................................Clean and re-insulate (para 93).
AGO 8244A
37
