Wayne JSU50 operating instructions Troubleshooting Chart, Operating Instructions and Parts Manual

Operating Instructions and Parts Manual JSU50

Troubleshooting Chart

Symptom

Possible Cause(s)

Corrective Action(s)

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

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