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E-2 Pre-filter Insert
The pre-filter is equipped with a replaceable filter insert mat.
Changing this filter mat at regular intervals greatly increases the operation life
of the subsequent main filter.
Therefore it should be changed at regular intervals (for example, weekly).
To change the mat, follow these steps:
• Pull out the wire fasteners (see illustration 3)
• Take out the old filter mat and replace it with the new one.
• Secure the new filter mat with the wire fasteners.
E-3 Maintenance of Blower unit
The blower unit is driven by a flat transmission belt from a squirrel cage induction motor.
Both are mounted to an angular steel bracket with six mounting. The belt driven blower
unit generally does not need maintenance. When the flat belt breaks (usually not until after
3.000 to 8.000 hours of operation). The new belt must be mounted with an initial tension
of 2 %. To achieve the correct tension, mark the new belt at a distance of 100 mm before
you mount it. Then mount it on the pulley. If the distance marked increases to 102 mm (2 %),
then the belt tension is correct. If not, the axial distance can be changed by loosening the
mounting screw of either the motor or the blower, as required.
Illustration 3
Summary of Contents for Mini-Weldmaster
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