Troubleshooting; Corrective Action - Franklin Electric FPS NCX Serie El Manual Del Propietario

4NCX-7xxxx & 4NCX-10xxx Models
Items Description
1, 2, 3, 4 Impeller Kit
11 Motor Screws Kit
Motor Cable-25 ft
12
Motor Cable-50 ft

Troubleshooting

Problem
Pump is not connected to power.
Circuit breaker is off or fuse is removed.
Accumulation of trash on float.
Float obstruction.
Pump does not turn on
Defective switch.
Defective motor.
The heat sensor has shut down the system.
Float or float rod obstruction.
Pump is air locked.
Pump will not shut off
Liquid inflow matches pump capacity.
Defective switch.
Check valve installed backwards.
Check valve stuck or plugged.
Pump runs but does not dis-
charge liquid Lift too high for pump.
Inlet to impeller plugged.
Pump is air locked.
Lift too high for pump.
Low voltage, speed too slow.
Pump does not deliver rated
capacity
Impeller or discharge pipe is clogged.
Impeller wear due to abrasives.
No check valve in long discharge pipe allowing
water to drain back into basin.
Pump cycles continually
Check valve leaking.
Basin too small for inflow.
4NCX-7520P3 4NCX-7523P3
305625005
305625014
802386201R 802386203R
802386201T 802386203T
Probable Causes
4NCX- 4NCX- 4NCX-
7546P3 7557P3 1020P3
802386201R
802386201T

Corrective Action

Power the pump according to the manual.
Turn on circuit breaker or replace fuse.
Clean float.
Clean float path and provide clearance.
Replace switch
Replace pump.
Refer to "Thermal Protection" on page
reset.
Check float and float rod path and provide clearance.
Remove pump and clean air bleed hole.
Larger pump required.
Replace switch
Check flow indicating arrow on check valve body to ensure proper installa-
tion.
Remove check valve and inspect for proper installation.
Check rated pump performance.
Pull pump and clean.
Remove pump and clean air bleed hole.
Check rated pump performance.
Check that supply voltage matches nameplate rating.
Pull pump and clean. Check pipe for scale or corrosion.
Replace worn impeller.
Install a check valve in the discharge line.
Inspect check valve for correct operation.
Install larger basin.
MAINTENANCE
Troubleshooting
4NCX- 4NCX- 4NCX-
1023P3 1046P3 1057P3
305625006
305625013
802386203R
802386203T
9. Wait 15 minutes for system to
11