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12
Replacing Filter Cartridges
Filter cartridge life will vary with pool conditions such as bather load,
wind, dust, etc. You can expect an average cartridge life of three
years under normal conditions.
To replace filter cartridges:
1. Follow Opening the Filter exactly (page 5).
2. Separate the Top Manifold (1) from the filter cartridges and lay
the manifold to the side. See Figure 12.
3. Carefully remove each cartridge separately.
4. Place the four replacement cartridges onto the support pipes in
the bottom of the tank.
5. Reinstall the Top Manifold onto the cartridges and verify the
O-ring (2) is secured to the manifold. See Figure 12.
6. Follow Installing the Filter Lid and Clamp Ring exactly (page 7).
7. Recoat the cartridges with D.E. according to the Coating the
Filter Cartridges with D.E. (page 6).
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
Style 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 13.
3. Remove valve stem and cover assembly from the valve body. See
Figure 13.
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.
5. Reinstall the valve stem and cover assembly with a downward and clockwise motion until it snaps into position.
XF
®
FULLFLO
Q-SERIES Cartridge Style D.E. Filter Installation and User' s Guide
Q-Series Cartridge
®
If needed, use only a PTFE or silicone-base lubricant on the O-rings. Use of petroleum based products on
O-rings will damage the equipment.
Figure 12
2
Figure 13
1
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