Pentair D.E. Cartridge Style Filter Quad D.E. - Manual (Page 18)

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Quad D.E. ® Filter Installation and User’s Guide
Cleaning the Internal Air Bleed Tube
1. Rinse the air bleed tube with water to clean away built-up debris. Normally, this is all that is necessary to
properly clean the tube.
Cleaning the High Flow ™ Manual Air Relief Valve
1. Turn the pump off and shut off any automatic controls to ensure that the system is not inadvertently
started during servicing.
2. OPEN THE HIGH FLOW™ MANUAL AIR RELIEF VALVE UNTIL IT SNAPS INTO THE
FULL OPEN POSITION, THEN WAIT UNTIL ALL PRESSURE IS RELIEVED.
3. With the High Flow™ manual relief valve attached to the filter tank, pull out the locking tabs and remove
the valve stem and cover assembly with a counter-clockwise and lifting motion, see Figure 3.
4. Clean debris from the valve stem and body. Ensure that the filter tank's air passage is open by inserting a
5/16 in. drill bit through the valve body. Ensure that the o-rings are in good condition, properly positioned,
and lubricated with a silicone base lubricant.
5. Reinstall the valve stem and cover assembly with a downward and clockwise motion until it snaps into
position.
Figure 3.