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10
Manually Cleaning the Filter Elements
1. Backwash the filter by following steps 1-9 of Backwashing the
Filter on page 9.
2. Follow Opening the Filter (page 5) exactly.
Note: If the filtration system includes a separation tank, close all
other valves and remove the drain plug from the backwash line.
3. Remove hair and lint strainer pot lid from the pump and clean
basket. Replace strainer basket and secure strainer pot lid.
4. Remove and clean the Air Bleed Screen Cap (1), then set it
aside. See Figure 10.
5. Remove the Center Rod Wingnut (2) securing the Holding Wheel
(3). See Figure 10.
6. Remove the Holding Wheel (3) from the filter elements and set it
aside. See Figure 10.
7. Carefully remove each filter element separately.
Note: If the bottom manifold is removed, apply a silicone-based lubricant to the
manifold adapter O-ring in the bottom of the filter tank and reinstall the bottom
manifold firmly in place.
8. Using a garden hose with a straight flow nozzle, wash down the entire element. Wash
from the top down, holding the nozzle at a 45-degree angle to the element (see
Figure 11).
9. For filter elements used in pools or spas where high levels of perspiration, suntan
lotions and other oils are present:
a. Soak the filter element for at least one hour (overnight is most effective) in one
of the following:
• A commercial filter cleaner
• One cup trisodium phosphate (TSP) to five gallons of water
• One cup dishwasher detergent to five gallons of water
b. Rinse the filter element to remove oils and cleaning solution.
10. If algae, calcium, iron or other mineral build-ups are present on the filter elements, acid soaking may be
necessary. Refer to Acid Soaking the Filter Elements, on page 12, for specific instructions.
11. Direct the water spray to wash out the inside of the tank body and bottom manifold. Water and debris will drain out
through the open drain plug.
Note: If the filtration system includes a separation tank, reinstall the drain plug into the backwash line.
12. Reinstall the filter elements onto the bottom manifold and ensure all are firmly in place.
13. Carefully feed the Air Bleed Tube (4) and Center Rod (5) through the Holding Wheel (3). See Figure 10.
14. Reinstall the Air Bleed Screen Cap (1) and Center Rod Wingnut (2). See Figure 10.
15. Follow Installing the Filter Lid and Clamp Ring exactly (page 6).
XF
® 4000-SERIES Grid Style D.E. Filter Installation and User' s Guide
FULLFLO
Heed all manufacturers' instructions and warnings when using polyhexamethylene
biguanide sanitizers or other filter cleaner solutions.
Failure to remove all oils and cleaning solutions before acid soaking will result in permanent restriction of water flow through
the filter and will cause premature element failure.
Figure 10
2
3
5
1
4
45°
Figure 11
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