WEGER WALTER GMBH DIWER EVO DP80 Series, Installation And Operating Manual

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Installation and Operating Manual Page
48
Printed: 02/2015
Disassembly and reinstallation
Before loosening the belt, measure the distance between the measuring marks. If necessary,
mark new measuring points, measure the distance and only then loosen the belt.
When reinstalling the belt, tension it as described above until the previous elongation is
reached.
This is important to prevent extra load on the axles, which generally results in damage to the
bearings.
Maintenance
Flat belts with a synthetic finish must not be treated with belt spray or belt resin. If necessary,
wash the flat belt with warm water and a conventional detergent.
7.3. Filters
Flat filters
Monitor the filter load with a differential pressure gauge. If the final pressure loss specified in
the data sheet is reached, clean or replace the filter.
Bag filters
Monitor the filter load with a differential pressure gauge. If the final pressure loss specified in
the data sheet is reached, replace the filter. Bag filters of grade EU 5 and higher cannot be
cleaned. These filters must always be replaced after they have reached the end of their service
life. Change the filter according to the instructions in the applicable standards, or latest when
the pressure drop has reached the preset final pressure loss.
Important!
Before installing the new filter cartridges, carefully clean all filter parts. Check the filter
cassettes and guides for leakage and seal them, if necessary.
Absolute filters
Replace the filter cartridges when the final pressure drop specified in the data sheet is
reached. When installing the new cartridges, ensure that the filter clamps are tightened
equally. We recommend performing a fit test.
Automatic roll filters
For automatic roll filters, observe the maintenance instructions of the manufacturer. As a rule,
replace the filter roll when it is spent. Normally, the operator is told by a warning signal that
the roll needs to be replaced. Check the gear oil level every 6 months.
Activated carbon filters
In contrast to other filters, high contamination of activated carbon filters does not result in a
pressure loss. The filter must be replaced when it is saturated.
To monitor the saturation level, weigh the filter. If the weight is increased by approx. 10-20%,
the filter is saturated and must be replaced. The weight of the filter should be checked every 3
to 4 weeks.