Nelweld Operations and Service Manual
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5.0 MAINTENANCE
5.1 Safety Precautions
ELECTRIC SHOCK CAN KILL
• Turn the input power OFF at the disconnect switch or fuse box
before working on this equipment.
• Turn the Power switch on the Nelweld power source “OFF” before
connecting or disconnecting output cable or other equipment.
• Do not touch electrically hot parts.
5.2 Care and Cleaning
The stud welding unit requires no special care. See operating instructions for the necessary cleaning work
for welding guns or any attached peripherals.
The cleaning or maintenance specified in this chapter is necessary for the proper functioning of any
Nelweld unit. Please observe the following specifications when performing any maintenance duties:
• Aggressive, combustible, or alcohol-based solvents should not be used for cleaning work.
• Exterior cleaning should be done using a dry cloth and leave any safety or warning stickers legible.
• Cleaning the unit is required in accordance with the operating conditions and degree of soiling.
Cleaning any electrical connections should be done only by proper electrical repair personnel.
• Impurities inside the welding unit, such as metallic dust, must be wiped off or blown out.
• In case of contact with liquids, the Nelweld unit must be shut down immediately and repaired by a
Local Authorized Nelson Field Service Facility.
5.3 Maintenance Schedule
Maintenance
Interval
Suggested Tasks Notes
Daily
Visual inspection of the outside of the unit casing, including:
• Welding cables, control cables, and hoses
• Inspect lifting handles, ensuring they are secure and tight
• Main plug and cable*
• Display and control elements*
• Connecting sockets and plugs*
Any task marked with an asterisk (*)
should only be carried out by proper
electrical repair personnel.
Weekly
Blow out the machine using a low-pressure air stream,
including the intake louvers, rear vent, and cooling channels.
Every 6 months
Visual inspection inside the unit casing, including:
• Wiring*
• Circuit boards*
• Electrical connections and components*
Any task marked with an asterisk (*)
should only be carried out by proper
electrical repair personnel.
Every 5 years
General overhaul of the Nelweld unit by Nelson Factory
Trained personnel.
General maintenance to verify that the
machine is functioning properly.
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