USE ONLY HAYWARD GENUINE REPLACEMENT PARTS 9
REMOVING THE MANUAL AIR RELIEF VALVE
WARNING
Your Filter comes with a Manual Air Relief Valve (MAR) pre-installed from the factory.
Only qualified pool professionals should service your filter’s Manual Air
Relief Valve.
For Qualified pool professionals only: If MAR valve needs to be serviced, follow these
instructions carefully.
1. Turn off all system circulation pumps and all electric power on the pad.
2. Set all system valves in a position to prevent water from flowing to the filter.
3. The manual air relief valve must be placed in the OPEN position.
4. Wait until all water leakage has stopped.
5. Grasp the MAR body at the flats, turn the MAR counterclockwise until the
indicator on the on the MAR flange is aligned with the “UNLOCK” position on the
upper filter body.
6. Pull straight up to remove the MAR, a slight rocking motion may help.
RE-INSTALLATION OF THE MANUAL AIR RELIEF VALVE
1. Check the o-ring seals, replace as needed.
2. With a clean cloth, wipe upper filter body and o-ring groove. Remove all dirt and debris.
3. Align the notch in the MAR Flange with notch on top of the upper filter body.
4. Press the MAR straight down into the upper filter body
5. Turn the MAR clockwise until the indicator is aligned with the “LOCK” position on the upper filter body.
6. Verify the MAR discharge points away from all electrical connections.
WINTERIZING FILTER
In areas where subfreezing temperatures can be expected, the filter should be drained to protect the filter from damage.
1. The filter should be disassembled and the filter cartridges elements cleaned or replaced.
2. Follow directions under FILTER DISASSEMBLY INSTRUCTIONS
3. Then REMOVING CARTRIDGES per instructions
4. Reassemble per the instructions on Page 8.
5. Be sure to leave the drain plug unattached during the winter season to avoid cracking the filter body.
SERVICE AND REPAIRS
Consult your local authorized Hayward dealer or service center. No returns may be made directly to the factory without the
expressed written authorization of Hayward Pool Products.
SUGGESTED POOL CHEMISTRY LEVELS
pH 7.2 to 7.8
TOTAL ALKALINITY 80 to 120 ppm
CALCIUM HARDNESS 200 to 400 ppm
COMBINED CHLORINE .2 ppm Maximum
CHLORINE (STABILIZED) 1.0 to 3.0 ppm
CHLORINE STABILIZER (Cyanuric Acid) 60 to 80 ppm
PROBLEM SOLVING LIST
LOW WATER FLOW SHORT FILTER CYCLES POOL WATER WON’T CLEAR UP
REMEDY
1. Check skimmer and pump strainer
baskets for debris.
2. Check for restrictions in intake
and discharge lines.
3. Check for air leak in intake line
(indicated by bubbles returning to
pool).
4. Backwash (Clean) Filter
1. Check for algae in pool and super-
chlorinate as required.
2. Be sure chlorine and pH levels are in
proper range (adjust as required).
1. Check chlorine, pH and total alkalinity
levels and adjust as required.
2. Be sure flow rate through filter is
sufficient.
3. Operate filter for longer periods.
Figure 10
Manual Air Relief Shown Open
In Locked Position
Rotate counterclockwise to UNLOCK
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