English – 13MAINTENANCE• Tighten the hose clamp with a 8 mm socket. Check thatthe hose clamp is tightened halfway from the base to theedge of the hose clamp tube. Some filter sock should beexposed below the whole way around the tube.• Fit the cable tie in the loop on the filter sock and fold theloop over the rack.• Wrap the cable tie around the loop base and tighten thecable tie.• Fit the primary filter into the silo. Assemble the parts in thereverse order.Cleaning/replacing secondary filtersThe secondary filters are made from a polyester filter mediaand can be washed out with water if needed. They should bechanged every 12 months.• Release the secondary filter toggle latches and open thesecondary filter housing door.• Remove the filter nut with a 13 mm spanner. Take care ofthe big washer and silicone washer.• Pull out the filter. Clean and dry the filter or fit a new one.• Assemble the parts in the reverse order.On re-installation of the secondary filter, ensure the sealsare firmly pressed against the wall of the secondary filterhousing. This contact can be assessed by looking downthrough the filter link hose coupling.Filters that have been used wet will need replacing if theywere not fully dry before next operation.ServiceNOTICE! Ensure the secondary filters are fully dry prior tore-installation to prevent damage to vacuum pump/motor.IMPORTANT! All types of repairs may only be carried out byauthorised repairmen. This is so that the operators are notexposed to great risks.