Troubleshooting Chart - Wayne JSU50 Operating And Parts Manual

Operating Instructions and Parts Manual

Troubleshooting Chart

Symptom Possible Cause(s)
Motor will not run 1. Power off
2. Fuse is blown (Breaker tripped)
3. Wires at pressure switch are
4. Faulty pressure switch
5. Motor thermal overload
Motor runs hot and 1. Pressure switch is wired
overload kicks off
2. Voltage is too low
3. Rapid cycling
4. High surrounding temperature
Motor hums but 1. Motor is wired incorrectly
will not run
2. Voltage is too low
3. obstructed Impeller
4. Voltage selector switch not
Motor runs but 1. Pump in new installation did
little or no water is
delivered.
a. Improper priming
NOTE: Check prime
b. air leaks
before looking
c. leaking foot valve
for other causes.
unscrew priming
2. Pump has lost prime through:
plug and see if
a. air leaks
water is in priming
b. water level below suction of
hole
3. Impeller is obstructed
4. Check valve or foot valve is
5. Pipes are frozen
6. Foot valve and/or strainer are
Pump starts and 1. Water-logged tank
stops too often
2. Ruptured diaphragm or
3. air volume control connected
4. Incorrect tank pre-charge (Pre-
5. leak in system or house piping
6. Foot valve or check valve stuck
7. Improperly adjusted pressure
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loose, disconnected, or wired
incorrectly
tripped
incorrectly
5.
properly set.
not pick up prime through:
pump
stuck in closed position
buried in sand or mud
(Conventional tank)
bladder (Pre-charged tank)
to wrong opening on pump
charged tank)
open
switch
Corrective action(s)
1. turn power on or call power company
2. Replace fuse (Reset breaker)
3. Refer to wiring instructions. Check and tighten all wiring
at p
4. Replace switch
5. let cool. overload will automatically reset. 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. Check pressure 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. using a flat head screw driver attempt to
rotate motor shaft (located under plastic cap at rear of motor).
If shaft does not rotate freely remove obstruction from
impeller.
4. Set voltage selector switch (Figure 6) to match line voltage.
(See electrical connections page 3)
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 (See page 4)
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
6
JSU50
switch
wires