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6. Leak to Drain. a. No flow control installed in drain line.
b. Insufficient water pressure.
c. Plugged injector and/or injector
screen.
d. Back pressure on pilot drain port.
a. Install drain line flow control.
b. Increase water pressure above 25 psig
(172 kPa) minimum.
c. Inspect and clean injector and/or injector
screen.
d. Plumb pilot drain line to atmospheric
position (i.e. brine tank).
7. Loss of Media to Drain. a. No flow control installed in drain line. a. Install drain line flow control.
8. Loss of Water Pressure. a. Fouled resin bed due to iron
accumulation.
b. Slots in riser pipe or laterals are filled
with resin fines.
a. Clean Magnum control valve and
mineral bed with cleaner.
b. Inspect and clean distributor pipe slots
as needed.
9. Salt in Water to Service
After Regeneration.
a. Injector is too small for system size.
b. Brine draw time excessively long
due to low water pressure.
c. Restricted drain line.
d. Insufficient rinse volume.
e. Plugged injector and/or injector
screen.
a. Install correct injector.
b. Increase water pressure above 25 psig
(172 kPa) minimum.
c. Remove drain line restriction.
d. Increase slow rinse time, fast rinse time,
or both.
e. Inspect and clean injector and/or injector
screen.
10. Err1, Err2, Err3, Err4. a. See Table IV. a. See Solution in Table IV.
11. Both tanks of Twin
Alternating system in
Standby.
a. Defective cam switch.
b. Miswired cam switch.
a. Replace cam switch.
b. Replace wiring.
12. Display shows flow on
tank in Standby.
a. Cams were turned manually. a. Follow procedure in Section 7.1.1 to
synchronize controls.
Symptom Possible Cause Solution
Magnum Cv Leak to Pilot Drain Troubleshooting
One possible cause is obstruction in valve disc area preventing disc from sealing. Another possibility is a tear in the
diaphragm. This chart will help locate possible problem area.
Not Leaking During Suspect Cartridge
Service Cycle #3 NHWB
Backwash #1 Drain
Brine/Slow Rinse #2 Rinse
Fast Rinse #4 Inlet
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