Repair Instructions S/N J08A

9
Function
Even with extremely fine dust the automatic filter cleaning function allows you to work constantly
with the same suction performance without having to manually clean the filter.
A powerful reversed air pulse is activated every 15 seconds keeping the air flow on a high level.
The air pulse is created by a solenoid connected to a piston with double-valve. When the valve is
opened a pulse is created by difference in pressure between outside and inside of container (dirty
side of filter). The negative pressure is reduced very quickly and a reversed air pulse flows through
the filter. The dirt adhered to the filter is blown and shaken off, causing it to fall back into the tank.
Automatic filter cleaning system
Double valve system
Solenoid actuator
C