ESAB Heliarc 281iAC/DC, Operating Manual

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section 6 maintenance
6 MAINTENANCE
0463 369 001
- 28 -
© ESAB AB 2014
6 MAINTENANCE
6.1 Overview
Regular maintenance is important for safe, reliable operation.
Only personnel with the appropriate electrical skills (authorized staff) may remove safety
plates.
CAUTION!
All warranty undertakings from the supplier cease to apply if the customer
attempts any work to rectify any faults in the product during the warranty period.
6.2 Power source
Check regularly that the welding power source is not clogged with dirt. Clogged or blocked
air inlets and outlets can result in overheating.
How often and which cleaning methods apply depend on:
•
the welding process
• the arc times
• the environment
• the surrounding environment
It is normally sufficient to blow down the power source with dry compressed air (reduced
pressure) once a year.
6.3 Welding torch
A regular programme of care and maintenance reduces unnecessary and expensive
downtime.
Each time a wire bobbin is changed, the welding torch should be removed from the power
source and blown clean with compressed air.
The wire end must not have sharp edges when inserted into the wire liner.
For detailed information see instruction manuals for welding torches.
6.4 Cooling unit
For the cooling unit it is sufficient to keep the inside clean. A dusty environment requires a
more frequent cleaning.
WARNING!
Before any actions are taken, disconnet the cooling unit from the mains power
supply (disconnect the ILME 4-way connector from the power source).
To clean the cooling unit do the following:
1. Disconnect and remove the cooling unit from the power source.
2. Remove all the coolant from the cooling unit.
3. Clean the inside of the cooling unit with compressed air, not higher than 3 bar.
4. Check that all the electrical connections are tightened.
5. Check that all the hydraulic connections are tightened.
6. Replace damaged or worn parts.
6 MAINTENANCE
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7. Fill up the cooling unit with coolant to the maximum level.
8. Put the cooling unit in position and connect it.
6.5 Fill up the cooling unit with coolant
To fill up the cooling unit with coolant do the following:
1. Turn of the cooling unit and the power source.
2. Disconnect the cooling unit connector from the power source.
3. Remove the safety bolt (1).
4. Carefully pull out the cooling unit (2), enough to access the coolant tank.
5. Fill up the cooling unit with coolant to the maximum level.
6. Carefully push back the cooling unit and fasten it with the safety bolt (1).