MARLO NXT2 Series Installation, Operation And Maintenance Manual page 50

MGT 2" 60M–600M NXT2 TWIN ALTERNATING
MAINTENANCE
TROUBLESHOOTING 2900 VALVE
PROBLEM
1. Softener Fails To Regenerate.
2. Hard Water.
3. Unit Used Too Much Salt
4. Loss Of Water Pressure.
5. Loss of Mineral Through Drain
Line.
6. Iron In Conditioned Water.
CAUSE
A. Electrical Service To Unit Has
Been Interrupted.
B. Timer Is Defective.
C. Power Failure.
A. By-Pass Valve is Open.
B. No Salt in Brine Tank
C. Injector Screen Plugged.
D. Insufficient Water Flowing Into
Brine Tank
E. Hot Water Tank Hardness.
F. Leak At Distributor Tube.
G. Internal Valve Leak
H. Service Adapter Did Not Return To
Service.
A. Improper Salt Setting.
B. Excessive Water in Brine Tank
A. Iron Buildup In Line To Water Con-
ditioner.
B. Iron Buildup in Water Conditioner.
C. Inlet of Control Plugged Due to
Foreign Material Broken Loose
From Pipes By Recent Work Done
On Plumbing System.
A. Air In Water System.
B. Improperly Sized Drain Line Flow
Control.
A. Fouled Mineral Bed.
47
CORRECTION
A. Assure Permanent Electrical Ser-
vice (Check Fuse, Plug, Pull Chain
or Switch).
B. Replace Timer.
C. Reset Time of Day.
A. Close By-Pass Valve.
B. Add Salt To Brine Tank and Main-
tain Salt Level Above Water Level.
C. Clean Injector Screen.
D. Check Brine Tank Fill Time And
Clean Brine Line Flow Control If
Plugged.
E. Repeated Flushings Of The Hot
Water Tank is Required.
F. Make Sure Distributor Tube Is Not
Cracked. Check O-Ring And Tube
Pilot.
G. Replace Seals and Spacers And/
Or Piston.
H. Check Drive Motor And Switch.
A. Check Salt Usage and Salt Set-
ting.
B. See Problem No. 7.
A. Clean Line To Water Conditioner.
B. Clean Control and Add Mineral
Cleaner to Mineral Bed.
Increased Frequency of
Regeneration.
C. Remove Piston and Clean Control.
A. Assure That Well System Has
Proper Air Eliminator Control.
Check For Dry Well Condition.
B. Check For Proper Drain Rate.
A. Check Backwash, Brine Draw And
Brine Tank Fill. Increase Fre-
quency of Regeneration. Increase
Backwash Time.