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WARNING
Working with muriatic acid can be dangerous. When
cleaning fi lter grids, 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.
5. See Section 5.2 for reassembly of the fi lter tank
and fi lter grids.
6.5 Cleaning Filter Grids with Muriatic Acid
1. Check with your local pool store or service
company to see if they offer fi lter grid de-scaling
services.
2. Stiffening of the fi lter grid fabric is caused by
mineral deposit buildup. It is usually due to
deposits of either magnesium, calcium, alkalines
or carbonates. Removal of these deposits may
be accomplished by soaking the fi lter grids in a
plastic tub or pail with six (6) parts water to one
(1) part hydrochloric acid (muriatic acid).
3. Wear rubber gloves and eye protection when
mixing the solution, and handling or rinsing the
fi lter grids.
4. Soak for at least four (4) hours.
5. Rinse the fi lter grids thoroughly with water.
6. See Sections 5.1 and 5.2 for reassembly of the
fi lter tank and fi lter grids.
Section 7. Winterizing
1. Turn off the pump and circuit breakers.
2. Open the air release valve and move the diverter
valve handle to a position between two (2) ports.
This will allow air to fl ow to all ports.
3. Remove the drain plug at the base of the fi lter to
ensure that the tank is empty. Store the drain plug
and seal it in a safe place. Do not reinstall until
next season at start-up.
4. Drain system piping of all water.
5. Cover the system with a tarpaulin or plastic sheet
to protect it from the weather.
Section 8. Troubleshooting
1. For a list of common problems and solutions, see
the Troubleshooting Guide on the following page.
2. Zodiac recommends that you call a service
technician to do any work on the fi lter/pump
system. For technical assistance, contact our
Technical Support Department at 1.800.822.7933
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