Product Manual

PAGE 6
TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSE/SOLUTION
PUMP DOES
NOT START:
1. No power. Check voltage at line terminals. The voltage must be ± 10% of rated voltage.
Contact power company if voltage is low.
2. Fuses blown or circuit breakers tripped. Check fuses for recommended size and check for
loose, dirty or corroded connections in fuse receptacle. Check for tripped breakers.
Replace with proper fuses or reset circuit breaker.
3. Defective pressure switch. Check voltage at contact points. Improper contact at switch points
can cause voltage less than line voltage. Replace pressure switch or clean points.
4. Control box malfunction (3-Wire, single phase only). Call dealer or electrician for repair or
replacement.
5. Defective wiring. Check for loose or corroded connection or incorrect wiring. See wiring
diagram.
6. Defective cable or motor. Splices bad. Call dealer or electrician.
7. Electronic motor load sensing device (drawdown protection) has pump turned off (if installed).
8. Reset low pressure cutoff switch (if installed).
PUMP STARTS
BUT OVERLOAD
PROTECTOR TRIPS
OR FUSES BLOW:
1. Wrong size fuse or circuit breaker. Call dealer or electrician for recommended size.
2. Wire size too small. Call dealer or electrician.
3. Control box malfunction (3–wire, single phase only). Call dealer or electrician for repair or
replacement.
4. Incorrect voltage. Check voltage at line terminals. Voltage must be ± 10% of rated voltage.
5. Defective wiring. Check for loose or corroded connections or incorrect wiring. See wiring
diagram.
6. Defective cable or motor. Splices bad. Call dealer or electrician.
7. High ambient (atmospheric) temperature. Check temperature of control box. The box must
not be hot to touch. Direct sunlight or other heat source can raise temperature of box causing
protectors to trip. Shade box, provide ventilation or move box away from heat source.
8. Pump or motor stuck or binding. Pump may be sand bound. Amp readings will be 3 to 6 times
higher until the overload trips. If necessary, remove pump from well (make all possible above
groundchecksrst).Ifpumpislocked,replaceit.Cleanwellofallsandbeforereinstalling
pump.
PUMP STARTS
TOO FREQUENTLY:
1. Pre-charged tank water-logged (loss of air pressure). Adjust air pressure to 2 PSI less than cut-
in pressure (when there is no water pressure on system). Check tank for leaks. Must be air and
water tight. Replace if necessary. Is tank sized too small to meet system
requirements?
2. Defective pressure switch or switch out of adjustment. Re-adjust or replace pressure switch.
Pressure switch should be located as close to the tank as possible.
3. Check valves leaking. Damaged or defective check valve will stick open and leak back.
Replace if defective.
4. Leakinsystem.Tanklosingpressurethroughleakingplumbingxtures.Checkallabove-
ground piping for leaks. If none, pull pump and check all pipe connections and connection of
pipe to pump.
PUMP RUNS
CONTINUOUSLY:
1. Pressure switch may have welded contacts. Switch may be out of adjustment. Clean contacts,
replace switch or adjust setting.
2. Low water level in well. Pump may exceed well capacity. Pump may be air-locked. Refer to
“controlling weak wells” information in the installation section of this manual.
3. Leak in system. Check system for leaks. Replace damaged pipe or repair leaks.
4. Worn pump. Symptoms of a worn pump are similar to those of drop pipe leak or low water level
in well. Reduce pressure switch setting, if pump shuts off worn pump may be the fault.
PUMP DELIVERS
LITTLE OR NO
WATER:
1. Pump not submerged in water. Low water level in well. Pump may be air-locked. Refer to
“controlling weak wells” information in the installation section of this manual.
2. Check valve installed backwards. Reverse and re-install.
3. Check valve stuck closed. Replace if defective.
4. Pump intake screen blocked. Pump in mud. Pump impellers partially clogged or plugged. Pull
pump and clean. Raise pump if necessary, i.e. reset pump depth.
5. Setting too deep for rating of pump. Call dealer, check pump rating table.
6. Piping might be split and leaking.
7. Low voltage. Wire size to small. Call dealer or electrician.
8. Incorrect rotation (3 phase only). Call dealer or electrician. Refer to “rotation” information in the
installation section of this manual.
9. Worn pump.
LANCASTER PUMP A DIVISION OF C-B TOOL
1340ManheimPike•LancasterPA17601-3196•Tel:717-397-3521•Fax:717-392-0266•www.lancasterpump.com
01/14