6
JSU50
Operating Instructions and Parts Manual
www.waynepumps.com
Symptom
Possible Cause(s)
Corrective Action
Motor will not run
Motor runs hot and
overload kicks off
Motor hums but will
not run
Motor runs but little or
no water is delivered.
NOTE:
Check prime
before looking for
other causes. Unscrew
priming plug and see if
water is in priming
hole
Pump starts and stops
too often
1. Power off
2. Fuse is blown (Breaker tripped)
3. Wires at pressure switch are loose,
disconnected, or wired incorrectly
4. Faulty pressure switch
5. Motor thermal overload tripped
1. Pressure switch is wired incorrectly
2. Voltage is too low
3. Rapid cycling
4. High surrounding temperature
1.
Motor is wired incorrectly
2. Voltage is too low
3.
Rotor is stuck
1.
Pump in new installation did not
pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
2.
Pump has lost prime through:
a. air leaks
b. water level below suction of
pump
3.
Impeller is plugged
4.
Check valve or foot valve is stuck in
closed position
5.
Pipes are frozen
6.
Foot valve and/or strainer are buried
in sand or mud
1. Water-logged tank (Conventional
tank)
2. Ruptured diaphragm or bladder
(Pre-charged tank)
3. Air volume control connected to
wrong opening on pump
4. Incorrect tank pre-charge (Pre-
charged tank)
5. Leak in system or house piping
6. Foot valve or check valve stuck
open
7. Improperly adjusted pressure
switch
1. Turn power on or call power company
2. Replace fuse (Reset breaker)
3. Refer to wiring instructions. Check and tighten all wiring
4. Replace switch
5. Let cool. Overload will automatically reset. Provide a shaded, well venti-
lated area for pump
1.
Refer to wiring instructions
2. Check line voltage. Install heavier wiring if wire size is too small (See
wiring chart, page 5). Check with power company
3. Check switch. Ensure tank is not water-logged
4. Provide a shaded, well ventilated area for pump
1. Refer to wiring instructions
2. Check line voltage. Install heavier wiring if wire size is too small (See
wiring chart, page 5). Check with power company
3.
Disconnect power, rotate motor shaft with flat blade screwdriver insert-
ed in the end of the shaft
1.
New installation:
a. Re-prime according to instructions
b. Check all connections on suction line
c. Replace foot valve
2.
Existing installations:
a. Check all connections on suction line and shaft seal
b. Lower suction line into water and re-prime. If receding water level in
well exceeds suction lift, a deep well pump is needed
3.
Clean impeller
4.
Replace check valve or foot valve
5.
Thaw pipes. Bury pipe below frost line. Heat pit or pump house
6.
Raise foot valve and/or strainer above well bottom
1. Follow instructions in maintenance section
2. Replace tank
3. Move to correct pump opening
4. Add or release air as needed
5. Locate and repair leak
6. Replace valve
7. Adjust or replace switch
Troubleshooting Chart
