Manual Filter Cleaning - Promac VAC-20PC User Manual

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5. FILTER CLEANING

The machine can optionally be equipped with a semi automatic filter cleaning system or fully automatic

filter cleaning system.

5.1 MANUAL FILTER CLEANING

When sucking fine dust the filter will eventually get clogged and suction will go down. The filter

therefore needs to be cleaned to restore suction. If the machine is not equipped with semi- or fully

automatic filter cleaning system (see next chapters), the filter can be cleaned in the following manual

way. Turn the knob (A) and remove the knob from the filter disc (B). Remove the filter (C). Clean the

filter under cold water (D). Let is dry (E) until completely dry. Install backwards by adding filter (F). Fixing

the filter disc (G) and securing it with the knob (H).

FIG. 14

5.2 SEMI AUTOMATIC FILTER CLEANING (OPTIONAL)

When the machine is equipped with the semi automatic filter

cleaning system, the filter can be cleaned by closing the inlet of the

handtube (A). However, first turn the machine to max. power if

equipped with power control (see figure 10). Close the inlet which

can be done with your hand or the receptable/hole in the machine

(B) can be used. After closing the inlet wait 2-3 seconds until the

maximum underpressure has been built up. Press the filter cleaning

FIG. 15

button (C) 5 times fast after each other. This action will clean the

filter and restore suction performance.

5.3 FULLY AUTOMATIC FILTER CLEANING (OPTIONAL)

The fully automatic filter cleaning system cleans the filter automatically approx. every 20 seconds. The

filter cleaning takes less than a second and a very little interruption of the suction performance takes

place during the filter cleaning. A small "bang" can be heard. The automatic filter cleaning system works

best, when the underpressure in the machine is high. If filter for some reason should be clogged and

suction is low then turn the machine to max. power (if configured with power controller) then close the

inlet of the machine and wait until a small "bang" can be heard. The filter will then be cleaned and

suction restored.

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