9
QUAD D.E.
®
Cartridge Style D.E. Filter Installation and User’s Guide
Acid Soaking the Filter Elements
After an extended period of operation, it may be necessary to soak the filter elements in an acid solution. Acid soaking
will remove algae, calcium carbonate, iron and other mineral build-ups from the filter elements. If not removed, these
mineral deposits can lead to the restriction of water flow through the filter and can impede efficient operation of the
equipment.
How to Acid Soak the Filter Elements
1. In a large plastic container, create a solution of one part
muriatic acid to twenty parts water. See
Figure 4
.
Note:
Introduce the muriatic acid as close to the water’s
surface as possible. This will minimize splash and reduce the
risk of user contact with the acid.
2. Gently place the bottom of the filter elements into the acid
solution. Allow the elements to soak in the solution for 10
minutes, or until bubbling stops.
3. Turn the filter elements over, placing the top halves into the
solution. Allow the top halves of the elements to soak for 10
minutes, or until bubbling stops.
4. Remove the elements from the acid solution.
5. Using a garden hose with a straight flow nozzle, thoroughly
wash down the entire filter element. Wash from the top down,
holding the nozzle at a 45-degree angle to the element.
6. Reinstall the elements and dispose of the acid solution in
accordance with local regulations.
Failure to remove all oils and cleaning solutions from the filter elements before acid soaking will result in permanent restriction of water
flow through the filter and will cause premature element failure.
Working with muriatic acid can be dangerous. When cleaning elements always wear rubber gloves and eye protection.
Add acid to
water, do not add water to acid.
Splashing or spilling acid can cause severe personal injury and/or property damage.
Cleaning the Filter using a Separation Tank System (cont.)
b.
Multiport Rotary Valve
After completing Steps 1 to 3 of this section; on page 8, perform the following steps:
(1) Position the valve to the BACKWASH setting.
(2)
Open the High Flow™ Manual Air Relief Valve until it snaps into the full open position
(this only requires a quarter turn counter-clockwise).
Opening this valve rapidly releases air
trapped in the filter.
(3) Stand clear of the filter tank, then start the pump.
(4) Close the manual air relief valve after a steady stream of water appears and run in the
BACKWASH mode for 1 minute.
(5) Stop the pump, set the filter valve to FILTER and run for 20 seconds, then stop the pump.
(6) Repeat the BACKWASH/FILTER cycle 3 times.
(7) When the sight glass shows a clear flow of water, shut off the pump.
(8) Position Multiport Rotary valve to the CLOSED setting.
(9) Follow section 4.a – Slide Valve on page 8.
Muriatic
Acid
Water
Figure 4:
Acid Washing the Filter Elements
