44
Magnum Valve Cartridge Troubleshooting
This procedure provides sequential troubleshooting steps
to isolate a suspect cartridge. Figure 34 displays the
locations of all cartridges.
NOTE: The Dynamic Pressure applied to the valve must
be greater than 25 psi at all times when
performing the following tests. If a cartridge
needs to be removed, follow the cartridge
removal procedure in the next section.
There are four symptoms that may require a cartridge to
be removed and inspected or replaced.
1. A constant leak from the pilot drain in any cycle
position. A small discharge of water from the pilot
drain while transitioning from one cycle to the next is
normal. A leak from the pilot drain could be caused by
the following:
a. Diaphragm failure in one of the valve cartridges.
See Table 9 for troubleshooting faulty cartridges.
b. Debris may prevent the flappers from closing.
Inspect discs and seats.
2. A leak to the main 1.5-inch drain valve port.
a. If the system is newly installed, ensure that the
start-up procedure has been properly followed.
Refer to the Service Manual or the start up sheet
packed in the shipping carton of the Magnum
valve.
b. If the system has been operating correctly for a
period of time and is now leaking, see Table 10.
3. Leakage of untreated water to service.
a. Leak at riser pipe seal or any other cause
mentioned in Service Manual.
b. Bypassing of untreated water by #4 Inlet
cartridge, remove and inspect.
4. Leak between the main valve body and the cartridge
assembly.
a. Remove and replace the two small O-rings at the
5:30 and 6:30 positions of the cartridge. The part
number for the O-ring set is P/N 1010116.
Figure 34 Logix Magnum Control
Table 9 Troubleshooting Faulty Cartridges
Quick cycle the Logix Magnum to each cycle indicated
below. If the pilot drain leak stops in a particular cycle,
remove the cartridge listed in the right column. Inspect
for wear or damage.
No Leak During
Cartridge
Service Cycle
#3 Outlet
Backwash
#1 Drain
Brine/Slow Rinse
#2 Rinse
Fast Rinse
#2 Rinse or #4 Inlet
Table 10 Magnum Valve Leak to Main Drain
Troubleshooting
Regenerate the unit if the media bed is exhausted, then
proceed to the following steps:
1. Test the water leaking from the 1.5-inch drain port
of the Magnum valve. It if is treated, remove and
inspect the #2 Rinse cartridge.
2. If the water leaking to the 1.5-inch drain port is
untreated, remove and inspect the #1 Drain
cartridge.
#3 Outlet
Cartridge
#2 Rinse
Cartridge
#4 Inlet
Cartridge
#1 Drain
Cartridge
