Cleaning The Manual Air Relief Valve; Cleaning The Internal Air Bleed Tube - Pentair FullFloXF 4000 Series Installation And User Manual

Cleaning the Manual Air Relief Valve

REQUIRED TOOLS:
• 5/16" Drill Bit (to check air passage)
• Silicone-based Lubricant (if needed)
PROCEDURE:
1. Shut off pump and relieve pressure.
a. Turn the pump OFF and shut OFF any automatic
controls (e.g., timers) and disconnect power
to ensure that the system is not inadvertently
started during maintenance.
b. Open the manual air relief valve by turning the
valve cover assembly a quarter turn counter-
clockwise until it snaps into the full open
position.
c. Stand clear of the filter and wait until all pressure
is relieved. Pressure gauge must read zero
(0 psi).
2. With the relief valve attached to the FullFloXF
4000-Series D.E. Filter tank, pull out the locking tabs
and unlock the valve stem and cover assembly from
the valve body with a counter-clockwise turn. See
Figure 14.
3. Remove valve stem and cover assembly from the
valve body. See Figure 14.
4. Clean and check the valve stem and body:
a. Clean off any debris.
b. Verify that the filter tank's air passage is open by
inserting a 5/16" drill bit through the valve body.
c. Verify that the valve stem O-rings are in good
condition, properly positioned, and lubricated
with a silicone-base lubricant.
based products on O-rings will damage the equipment.
5. Reinstall the valve stem and cover assembly with a
downward and clockwise motion until it snaps into
position.
Figure 14
®
If needed, use only a PTFE or silicone-base
lubricant on the O-rings. Use of petroleum

Cleaning the Internal Air Bleed Tube

It is recommended that the air bleed tube and screen
cap be routinely inspected and cleaned. This can easily
be done while the filter lid has been removed for routine
maintenance or cleaning.
Remove the screen cap from the air bleed tube and
rinse both components with water to clean away built-
up debris. Typically, this is all that is needed to properly
clean the air bleed assembly.
XF
® 4000-SERIES Grid Style D.E. Filter Installation and User' s Guide
FULLFLO
Figure 15
Screen Cap
Air Bleed
Tube
13