Cartridge Replacement - Pentair AUTOTROL MAGNUM 293 Installer Manual

9.6.12

Cartridge replacement

Info
Removal of cartridges should be done only after reviewing all other possible causes of
problem (see Magnum valve cartridge [
Info
There may be some difficulties to remove cartridges in valves that have been in service
for a long period of time.
Scale or iron build up around the O-ring seals may cause breakage in the cage assembly
of the cartridge.
Info
The controller must be removed first before removing #1 drain cartridge or #2 rinse
cartridge.
1. Using a combination wrench, remove the four bolts (1).
2. Using a flat screwdriver, pry a small opening between the valve body and the second part of
the cartridge.
Caution - material
There are two parts or sections in the cap of the cartridge assembly.
The first part is a cover for the diaphragm. The second part is attached to the main
cartridge assembly. Insert the screwdriver between the valve body and the second part of
the cartridge assembly (2).
3. Insert two larger flat screwdrivers at the 10 o'clock and 2 o'clock positions of the cartridge.
ð These should be inserted approximatively 1 cm into the opening created by the small
screwdriver. Use then the two screwdrivers to slowly move the cartridge
valve body.
4. Inspect, clean and/or replace the damaged part of the valve cartridge.
5. Reverse above procedure steps to rebuild.
Info
Check that the nipples O-rings
valve body.
Ref. MKT-IM-012 / D - 03.02.2022
Installer manual Autotrol Magnum 293 - 298 Logix 742-762 - Maintenance
→ Page 91]).
(3) are in place when the cartridge is rebuild into the
(4) out of the
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