Pentair AUTOTROL MAGNUM 742 - Page 87

Installer Manual Magnum 742-762 - Troubleshooting
Ref. MKT-IM-012 / C - 25.10.2019 87 / 106
No brine draw.
Plugged injector and/or injector
screen.
• Inspect and clean the injector and/
or injector screen assembly.
Insufficient water pressure.
• Increase water pressure above
172 kPa minimum.
Obstructed drain line.
• Remove the obstruction.
Brine line pulling air.
• Ensure all brine line fittings are
tight.
Insufficient brine
draw.
Partially clogged injector and/or
injector screen.
• Inspect and clean the injector and/
or injector screen assembly.
Restricted flow rate in brine line.
• Check flow rate capabilities of the
safety float/air check assembly.
Insufficient water pressure.
• Increase water pressure above
172 kPa minimum.
Excessive back pressure on injector
due to elevated drain line.
• Reduce drain line elevation to
height of valve.
Partially restricted drain line.
• Remove the restriction.
Insufficient refill
to brine tank.
Restricted flow rate in brine line.
• Check flow rate capabilities of the
safety float/air check assembly.
Resin volume incorrectly set.
• Program again the controller.
Excessive water in
brine tank.
Plugged drain line flow control.
• Clean the drain line flow control.
Plugged injector and/or injector
screen.
• Inspect and clean the injector and/
or injector screen assembly.
Incorrect refill controller.
• Install the correct controller.
Insufficient water pressure.
• Ensure that operating pressure is
above 172.4 kPa.
Leak to main
drain.
No flow control installed in drain line.
• Install drain line flow control.
Insufficient water pressure.
• Increase water pressure above
172 kPa minimum.
Plugged injector and/or injector
screen.
• Inspect and clean the injector and/
or injector screen assembly.
Back pressure on pilot drain port.
• Plumb pilot drain line to
atmospheric position (i.e brine
tank).
Loss of media to
drain.
No flow control installed in drain line.
• Install drain line flow control.
Air or gasses in raw water.
• Ensure that air or gasses are not
present in feed water.
Unit draws air through brine line.
• Ensure that all brine line fittings
are tight and that the aircheck
closes.
Defective air check.
• Clean or replace aircheck.
Issue Cause Reset and recovery