Flint & Walling Commander Pro 300 - Manual (Page 14)

14
95 North Oak Street • Kendallville, IN 46755
Troubleshooting Chart
Symptom Possible Cause(s) Corrective Action
Fuses blow when motor starts 1. Incorrect voltage
2. Incorrect fuses
3. Defective pressure switch
4. Control box malfunction
5. Bound pump
6. Defective cable or motor winding
7. Shorted or open motor winding
1. Contact power company if voltage is incorrect after
first checking for correct wire size. See Wire Size
Chart
2. Replace with proper fuses
3. Replace pressure switch or clean contacts
4. Correct faulty wiring or tighten loose contacts
5. Sand bound pump can sometimes be corrected
by temporarily reversing black and red leads in
control box then returning to normal. If pump does
not rotate freely, it must be pulled and cleaned or
realigned and the well condition corrected
6. The pump must be pulled and the cable
disconnected and inspected. Damaged cable
should be correctly spliced or replaced. If cable is
good, the motor winding is grounded
7. The pump must be pulled and motor or drop cable
repaired or replaced
Motor runs but fuses blow 1. Incorrect voltage
2. Overheated protectors
3. Improperly wired control box
4. Defective motor or cable
5. Defective pump
6. Defective installation
1. Contact power company in incorrect
2. Shade box, provide ventilation or move box away
from heat source
3. Rewire correctly
4. If ground, short or open circuit is indicated pump
must be pulled for repair
5. Pull pump, clean and repair
6. Pull pump, rechecking components and installation
Motor does not start and fuses
do not blow
1. No power
2. Defective pressure switch
3. Defective wiring
1. Replace fuses or reset circuit breaker. Contact
power company if no power is reaching box
2. Clean contact points or replace switch
3. Correct faulty wiring or connections
Pump runs, but delivers little or
no water
1. Air locked pump
2. Low water level in well
3. Pump rotation wrong
4. Check valve stuck or installed improperly
5. Leak in drop pipe
6. Pump screen locked
7. Worn pump
8. Loose or broken motor shaft
1. Normal delivery may resume if pump is started and
stopped at one minute intervals
2. Throttle pump delivery through restricting valve.
Lower pump setting if depth of well is adequate
3. Check wiring connections
4. Replace or reinstall properly
5. Raise pipe, check for leak and replace damaged
section
6. Clean screen and reset at less depth. It may be
necessary to clean well
7. Pull pump and replace worn impellers, casing or
other close fitting parts
8. Check for damaged shafts if coupling is loose and
replace worn or defective units
Pump keeps running 1. Pressure switch
2. Low level well
3. Leak in system
4. Worn pump
1. Clean points or replace switch
2. Throttle pump output or reset pump to lower level.
Do not lower if sand may clog pump
3. Replace damaged section
4. Pull pump and replace
Pump starts too often 1. Pressure switch
2. Leak in system
3. Check valve
4. Air supply (waterlogged tank - air under
pressure absorbed into the water)
1. Reset limit or replace switch
2. Repair or replace tank or pipes
3. Remove and replace if defective
4. Clean or replace. Drain and recharge tank