Franklin Electric BT4 Serie Guide D'utilisation page 7

FIGURE 6 - SERVICE AND DISASSEMBLY
DISASSEMBLY FOR MOTOR REPLACEMENT
1. Loosen the 2 set screws on the coupling between
the motor and pump end.
2. Remove the 4 bolts, nuts, and lock washers that
hold motor to pump end.
3. Pull motor away from pump end.
Note: If your motor is a 56C Frame keyed shaft motor,
you are now ready to replace the motor. If you have a
square flange type motor, continue with steps 4 through
7 below. Remove the shaft adapter from your old motor
so it can be installed on the replacement motor.
4. Remove motor canopy from wiring end of motor
(Figure 7).
W A R N I N G
Capacitor voltage may be hazardous. To
discharge motor capacitor, hold insulated handle
screwdriver BY THE HANDLE and short capacitor
terminals together. Do not touch metal screwdriver blade
or capacitor terminals or electrical shock could occur. If
in doubt, consult a qualified electrician.
5. In order to gain access to the motor shaft, loosen
screw that holds motor overload in place and move
overload aside without disconnecting wires.
6. Insert 7/16" open end wrench onto exposed motor
shaft flats. The motor shaft may have to be rotated
until the open end wrench lines up with the flats on
the shaft.
7. For three-phase motors - remove shaft screw
from the center of the shaft adapter w/ 3/16" Allen
wrench. This shaft screw has a left hand thread.
Loosen by rotating in clockwise direction. Skip this
step for single-phase motors which do not include
this shaft screw.
8. Remove motor shaft adapter from pump end of the
motor shaft with a 5/8" open end wrench, while
holding the opposite end of the motor shaft with a
7/16" open end wrench. Some single-phase pumps
do not have 5/8" flats on the shaft adapter. It must
be removed using a pair of vice grips.
9. Installation of new motor is accomplished by
reversing steps 1 through 8 above, and applying
the torque values specified above. At the final step
of assembly, before tightening the 2 set screws,
the coupling should be pried with a flat blade
screwdriver all the way toward the motor for
proper positioning.
PUMP END DISASSEMBLY AND MECHANICAL SEAL
REPLACEMENT
1. Remove motor as outlined in steps 1 through 3 of
DISASSEMBLY FOR MOTOR REPLACEMENT.
ATTENTION
The next several steps involve
disassembly of the pump end components. Special
attention should be paid to the placement and orientation
of every part to ensure that the pump is reassembled
correctly. If you are not comfortable and/or familiar with
this type of pump end work, please do not proceed.
FIGURE 7 - PUMP DISASSEMBLY FOR MOTOR REPLACEMENT
Remo ve with
clockwise
rotation.
1 Discharge
Connection
Tor que discharge
connection to 80 - 100 ft-l bs
at reassem bly
Overload Protector
(Moved for access)
Capacitor
See V iew A-A
3
Disconnect from
power so urce.
A
2
Motor Canopy
2. While holding the pump bracket in a vise, remove
the pump discharge casting from the pump end with
a pipe wrench and clockwise rotation looking into
the discharge of the pump.
3. Remove discharge adapter ring and o-ring from
assembly making special note of their position and
orientation.
4. If the pump shell does not come off with the
discharge casting, it will be necessary to remove
the shell from the bracket using a strap wrench and
clockwise rotation.
5. While holding the pump/motor coupling with a
1-1/8" open end wrench, remove the ½" nut from
the pump shaft. Next, remove all washers, spacers,
pump stages, thrust washers, adapter and o-ring
from the shaft.
Remo ve with
4
Counter-clockwise
rotation.
3
7/16" Open
End Wrench
Overload scre w
(remo ve)
Centrif ugal
S witch
V iew A-A
Motor end view with
canopy remo ved
Snap
5
Ring
Impeller
Stack
7