11
Chapter 7
USER MAINTENANCE
Air Filters and check valve
(every 6 months or sooner depending on use)
AQ1270 is equipped with two stages of air filtration and a check valve system.
The first stage is a sintered filter (PN 10417). It is can be unscrewed and washed with clean water as
needed. Replace every six months.
The second stage filter (PN 5251) collects fine dust. Replace every 6 months or sooner depending
on use. It is accessible behind the air pump panel. A layer of black dust on top of the filtering media
is a sign that the filter should be replaced. To replace it, unscrew the 3 knobs to open the panel and
exchange the filter after pulling off the rubber tubing from both sides of the filter. Note the small
triangle showing the normal air flow direction and position filter accordingly as shown below.
The check valve (PN 10200) should be replaced every six months. It is also located behind the panel.
Note the position of the check valve. Replace check valve accordingly as shown below.
Reinstall the panel and screw the three knobs back in place being careful not to strip the threads.
The screws should align and go in easily.
Check
Valve
Second Stage
Filter
Triangle
Pointing Down
Arrow
Pointing
Down
Arrow
Pointing
Up
First Stage
Filter
Second Stage
Filter
Check
Valve
7
