Franklin Electric BT4 Serie Guide D'utilisation page 8

Pay careful attention to the placement and orientation
of these components to ensure that they are
reassembled correctly.
6. Remove the snap ring and mechanical seal
retaining washer located on the pump end of the
pump/motor coupling.
7. With a rubber mallet, tap the shaft/coupling
assembly through the bracket in the direction
toward the motor attachment. The spring half of the
mechanical seal is now loose and can be removed
from the assembly.
8. The ceramic seat and rubber boot can be tapped
from the bracket using a flat blade screwdriver and
rubber mallet.
9. Reassembly of the pump is accomplished by
reversing steps 1 through 8 above, and applying
the torque values listed above. Lubricating rubber
components with soapy water will ease installation.
Be careful not to contaminate the mechanical
seal faces with foreign matter or the touch of your
hands. Use the cardboard spacer provided with
the new mechanical seal to tap the ceramic seat in
place without contamination.
8
TROUBLESHOOTING
PROBLEM
Motor will not (a) Disconnect switch open
start
(b) Fuses blown or thermal overload open
(c) Locked shaft, hydraulic components
set incorrectly
(d) Motor windings failed
(e) Defective starting switch inside motor
(f) Disconnected or defective wiring
Motor (a) Low or high voltage
overheats
(b) Hydraulic components are rubbing
(c) Inadequate ventilation
Pump delivers (a) Pump not primed
no water
(b) Plugged suction or discharge line
(c) Leakage of air in suction line
Low pump (a) Valves in suction or discharge lines
capacity or partially closed
pressure
(b) Suction or discharge line
partially plugged
(c) Wrong pump rotation
Noisy pump (a) Plugged suction line
and motor
(b) Defective motor bearings
(c) Valve in suction line partially closed
(d) Suction line partially plugged
(e) Impellers rubbing inside the pump end
Water leakage (a) Defective seal assembly
at pump shaft
POSSIBLE CAUSE