Itm BM21 Manual de usuario

www.itmtools.com.au

Ver: 1.0

BM21

SERVICE MANUAL

BM21

BEVELLING MACHINE

2www.itmtools.com.au

BM21 SERVICE MANUAL

Replacement of the motor

1. Dismount the guide, milling head cover, and milling head according to

„Replacement of the milling head”.

2. Dismount the controller according to „Replacement of the controller”.

3. Unscrew 2 screws mounting the frame with the seal to the motor.

4. Unscrew 4 screws mounting the motor to the frame, remove the motor

from the frame, and unscrew 4 dampers.

5. Replace the motor, proceeding in reverse order. Pay close attention to

the following:

-damper – prohibited is stretching the damper by tightening the

mounting screw. Use spacer washers as in the figure below if needed,

Damper

Frame

Mounting

screw

Frame with

the seal

Mounting

screw

Mounting

screw

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BM21 SERVICE MANUAL

BM-21 service manual page 2/8

-presence of the rubber seal between the motor and the frame,

- presence of the microrubber between the frame and the lower cover of the

controller.

NOTE! Place the wires in such a way not to crush them.

Damper

Frame

8.4 mm spacer

washer

Mounting

screw

Motor

Rubber

motor seal

Microrubber

seal

Lower cover

of the

controller

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BM21 SERVICE MANUAL

BM-21 service manual page 3/8

Replacement of the milling head

1. Loosen the knob of the milling head cover, unscrew the lever, and slide

out the milling depth indicator completely. Remove the cover along with

the guide.

2. Place a 32 mm flat wrench onto the driving ring and lock the wrench,

then use a 8 mm hex wrench according to the direction of the arrow to

loosen the bolt. Remove the milling head from the motor shaft.

3. Replace the milling head. Mount again by proceeding in reverse order.

Knob

Lever

Milling head cover

Depth indicator

Milling

head

8 mm hex

wrench

32 mm flat

wrench

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BM21 SERVICE MANUAL

BM-21 service manual page 4/8

Replacement of the controller

1. Unscrew 4 screws connecting the controller cover to the frame. Remove

the controller cover.

2. Unplug the wires of the controller and capacitor. Unscrew the screw of the

mounting block, separate the block, and unplug the protective earth wire.

3. Replace the controller by proceeding in reverse order. Maintain the wire

colors as shown in the figure. NOTE! Place the wires in such a way not to

crush them.

Screw mounting the

controller cover to the

frame

Controller and

capacitor wire

Protective

earth wire

Controller

wires

Capacitor wire

Mounting block

Screw of the

mounting block

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BM21 SERVICE MANUAL

BM-21 service manual page 5/8

Replacement of the power cord

1. Unscrew 4 mounting screws and pry off the controller assembly.

2. Unscrew the cable grommet of the power cord, and unscrew the lock nut

of the cable gland. Unplug the wires of the power cord from the power

switch, and unscrew the protective earth wire from the controller body.

3. Replace the power cord and connect the wires. Screw the controller to the

frame. NOTE! Place the wires inside the controller in such a way not to

crush them.

Cable grommet

Power cable wires

Protective earth

wire of the power

cord

Mounting

screws

Lock nut of the cable

gland

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BM21 SERVICE MANUAL

BM-21 service manual page 6/8

Replacement of the power switch

1. Unplug the wires from the power switch.

2. Squeeze the latches and push the switch out of the controller body.

3. Replace the switch by proceeding in reverse order. Maintain the wire

colors as shown in the figure.

Wires

Latches

Controller

body

Power

switch

Latches

8www.itmtools.com.au

BM21 SERVICE MANUAL

BM-21 service manual page 7/8

Replacement of the START-STOP switch

1. Disconnect the wires from the START-STOP switch.

2. Rotate the latch of the START-STOP switch to OFF and remove the switch.

3. Unscrew the nut of the switch drive. Use a special key KLC-000046.

4. Replace the START-STOP switch drive by proceeding in reverse order.

Latch

Controller body

START-STOP

switch

Special key

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BM21 SERVICE MANUAL

BM-21 service manual page 8/8

Replacement of the guide assembly

1. Unscrew the screws mounting the guide assembly to the milling head

cover. Remove the guide assembly.

2. Replace the guide assembly in reverse order.

Mounting screws

Guide assembly

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