Hayward HCF7030C HCF Series Cartridge Filter Operation Manual ISC7031HCF - Page 7

OPERATION 4. Operation 4.1 Filtering WARNING Filtration starts as soon as flow is steady through the filter. As the filter removes dirt from the pool water, the accumulated dirt causes a resistance to flow. As a result, the gauge pressure will rise and the flow will decrease. When the pressure rises between 7 and 10 psi (.49 - .69 bar) above the starting pressure, or when the flow decreases below the desired rate, clean or replace the Figure 3 filter cartridge elements. Once your filter is running and there is a pressure reading, line up the green arrow with the current reading. (See Fig 3) When the pressure rises to or above the red or second arrow, it is time to clean or replace your filter cartridge elements. By recording the initial starting pressure (with clean filter elements) a determination can be made when the filter cartridge elements should be replaced rather than cleaned. After the filter elements have been cleaned and reinstalled if the starting pressure is higher than 6 PSI above the starting pressure with the new filter cartridge elements, the filter cartridge elements should be replaced the next time the gauge arrow reaches the red arrow. 4.2 Maintaining Your Filter WARNING DE2422Z2 METAL REINFORCED SEAL MANIFOLD WARNING: This product should be installed and serviced only by a qualified pool professional. FILTER DISASSEMBLY INSTRUCTIONS LOWER BODY SEAL SURFACE 1. Turn off all system circulation pumps and all electric power on the equipment pad. 2. Set all system valves in a position to prevent water flow to the filter. 3. The manual air relief valve must be placed in the OPEN position. (Fig 6) 4. Remove filter drain plug (Fig 4) and drain water from filter. Figure 4 5. Using 3/4" wrenches or hex sockets, loosen and DRAIN PLUG WITH O-RING remove the clamp nut and the clamp bolt. (Fig 5) 6. Holding both ends of the filter clamp carefully spread the clamp ends. Remove the clamp by lifting over the upper filter body. Do not to drop the clamp during removal, because the clamp could be damaged. Do not strike the clamp with metal tools as they can damage the clamp. 7. Lift off upper filter body. Do not use the pressure gauge to lift the upper filter body. 7