Section 8 - Troubleshooting Chart - Xylem Goulds VS Manuel D'utilisation

D. Hold impeller firmly against the motor adapter
and drive the taperlock into place with the ta-
perlock driver. See Figure 5. After the impeller is
secured in position, the top end of the taperlock
should be / " above the impeller hub.
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8
TAPERLOCK
DRIVER
ASSEMBLY
POSITION
Figure 5 – Install the Impeller
SECTION 8 — TROUBLESHOOTING CHART
In case of difficulties, refer to the chart to locate basic problems with the system. Once the problem is located, refer to
specific sections in this manual for details.
CONDITION
PUMP WILL
NOT RUN
PUMP RUNS
BUT NO WATER
SHAFT
IMPELLER
BOWL
PROBABLE CAUSE
1. Motor overload protector trip
a. Incorrect control box.
b. Incorrect connections.
c. Faulty overload protector.
d. Low voltage.
e. Ambient temperature of control box
or starter too low.
f. Pump bound by foreign matter.
2. Blown fuse, broken or loose electric
connections.
3. Motor control box or starter not in
proper position.
4. Cable insulation damaged.
5. Splice may be open or grounded.
6. Faulty pressure switch.
7. Faulty liquid level control.
1. Line check valve backward.
2. Pump is air-bound.
3. Lift too high for the pump.
4. Suction screen or impeller plugged,
or pump in mud or sand.
5. Pump not submerged.
6. Well may contain excessive amounts
of air or gas.
7. Three-phase unit running backwards.
E. Put a little grease on the shaft where the inter-
mediate bearing will be. Slip intermediate bowl
over the shaft and bolt or screw it onto the motor
adapter.
F. Place the next impeller over the shaft and continue
to assemble as explained above.
G. After assembling the last impeller, slide the up-
thrust washer over the shaft before assembling the
top intermediate.
H. Slide the discharge case and top intermediate
bowl over the shaft and bolt it to the second in-
termediate bowl. If the pump has a built-in check
valve, install the check valve before installing the
discharge adapter.
I. When the bowl is completely assembled, unlock
the shaft and remove the assembly jig. Rotate the
shaft by hand to see whether it rotates freely. Push
the shaft all the way in and then pull it all the
way out to check the lateral clearance. The lateral
should be between 0.187" to 0.250".
J. Install the square key in the keyway at the motor
end of the pump shaft. Slide the shaft coupling
over the shaft and secure it to the key with two
setscrews.
REMEDY
1. Allow motor to cool, overload will
automatically reset. Investigate cause
of overload.
a-e. Have a qualified electrician inspect
and repair, as required.
f. Pull the pump, examine and clean.
Adjust set depth as required.
2. Check fuses, relays or heater elements
for correct size capacitor and all electrical
connections.
3. Make sure box is in upright position.
4. Locate and repair as per instructions.
5. Check resistance between cable leads
with ohmmeter. If open or grounded,
pull pump and resplice.
6. Repair or replace.
7. Check relay, wires and electrodes.
1. Reverse check valve.
2. Successively start and stop pump until
water flows normally.
3. Review performance requirement.
4. Pull the pump and clean, check well
depth. Raise setting if necessary.
5. Check water level. Lower pump if
permissible.
6. Start and stop pump several times. If this
does not remedy conditions, pump may
not be able to cooperate because of too
much gas in the well.
7. Reverse rotation.
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