Fein FMM 250 User manual

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
Starting page

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
Contents
1. Technical data
2. Maintenance
3. Electrical function test
4. Disassembly
5. Assembly
6. Tools
7. Operating manual available on the Internet (www.fein.com)
8. Spare parts list available on the Internet (www.fein.com)

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
1. Technical data
Model FMM 250 FMM 250 Q
Part number 7 229 36 7 229 37
Power consumption Watt 250
Power output Watt 150
Idle speed 1000 rpm 11 - 21
Power mains connection type 1~
Safety class lI
Cable length with plug m 5
Weight without cable kg 1.2 1.4

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3. Electrical function test
3.1. Function test
3.2. Test data
3.3. Testing devices and aids
3.4. Wiring diagram / Connection plan
3.5. Safety test

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.1. Function test
Checking the motor without electronics
•Disconnect motor lead from electronics
•Apply testing voltage to motor lead according to table.
Rated voltage
100 –120 V AC
220 –240 V AC
Testing voltage
max. 65 V AC
max. 130 V AC
3.1.1. Motor

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.1.2. Electronics
•The electronics cannot be tested without load (motor), the control
circuit has to be closed.
•The function of the electronics is released when the speed values
correspond to the test data.
Attention!
At supply voltage, the machine may only be operated with correctly loaded
electronics, otherwise the control circuit is interrupted and the speed
increases to prohibited levels.
3.1. Function test

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.2. Test data
Model FMM 250 and FMM 250 Q
Mark of conformity CE
Dimensioning voltage Volt 230
Dimensioning current ampere 2,3
No-load current ampere 0,60 (0,54-0,69)
Dimensioning output Watt 250
Power output Watt 150
Idle speed 1000 rpm 11,0 - 21,0
Idle speed / max 1000 rpm 19,0 - 21,0
Power mains connection type 1~
Safety class lI
Cable length with plug m 5
Weight without cable kg 1.2 / 1.4

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.3. Testing devices and aids
hMultimetre for effective measuring (voltage, current, resistance).
hSpeed gauge, impulse counter (suitable for oscillating movement)
hAdjustable isolating transformer
(for motor test without electronics at 65 and 130 VAC)

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.4. Connection plan
Wiring:
075 - carbon holder ( 2x )
090 - grounding cable
120 - supply line field magnet
electronics ( blue )
140 - supply line field magnet
carbon holder ( blue )
210 - supply line field magnet
electronics ( brown )
220 - supply line field magnet
carbon holder ( brown )

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
3.5. Safety test / (immediately after about 15 minutes run-in)
Attention!
The safety test is
based on the
stipulations given
by the current DIN
VDE 0701 Part 1
(appendix "E" for
electr. tools).
Safety test:
..as performed
at FEIN
Test steps
Test type
1.
Visual inspection
1. If necessary, dismantle clamped-in tool
2. Cable
3. Housing
4. Mechanical actuation elements
5. Check type identification label
2.
Insulation resistance
measurement
1. Disconnect from mains
2. Connect L1 and N to plug
3. "ON" switch
Measuring points: Gear head (405) and screws (160+170) against L1/N
Testing voltage: 500 VDC
Insulation resistance: min. 2.0 M Ohm
3.
High voltage test
HV test according to:
EN-60745-1, Art.15:
2003
1. Disconnect from mains
2. Connect L1 and N to plug
3. "ON" switch
Measuring points: Gear head (405) and screws (160+170) against L1/N
Testing time: at least 3 sec
Testing voltage: 2500 VAC
Trip circuit: 5mA > overload relay of testing status may not react
4.
Speed gauge
1. Speed setter (110) on step 6
2. Switch on machine
3. Measuring point on drive shaft
Testing time: at least 12 sec
Speed tolerance field: min. 18,500/min, max.18,900/min
5.
No-load current
measurement
1. Switch on machine
2. Testing time: at least 3 sec
No-load current tolerance field: min.0,72 A, max.0,92 A

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4. Disassembly
4.1. Electronics
4.2. Carbon brushes / carbon holder
4.3. Removing the armature
4.4. Changing the armature bearing
4.5. Removing the field magnet

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4. Disassembly
Before the disassembly of the device is begun
(motor and gears), the machine should always be disconnected
from the mains. Furthermore it is recommended to also
disconnect the tool and clamping piece.

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
Because of quality guidelines about pressing in force on the spindle, which can not be guaranteed
after repair, the gear head of the new FMM 250 and FMM 250 Q
can only be replaced or offered as a complete spare part unit (405).
Only the small parts as seen on the picture can be purchased separately (see drawing
and spare parts list at www.fein.com)
4. Disassembly - general information

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
1. Remove screws and cover
2. Remove the electronics out of the motor case
3. Disconnect the plug connection between the motor
and the electronics
4.1. Disassembly: Electronics
Tools:
- Torx 15
Screwdriver
- Flat pliers

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.2. Disassembly: Carbon brushes
1. Lift up spring and pull out the carbon brush
2. Remove screws and detach the carbon holder
3.ATTENTION - Observe R / L during carbon holder assembly!!!!!!!!
4. During field magnet disassembly - Expose the flex from the
field magnet !
Tools:
- Torx 15
Screwdriver
- Cable hook

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.3. Disassembly: Removing the armature
1. Remove all 4 screws
2. Disconnect the gearbox case with the armature from
the motor case
Tools:
- Torx 15
Screwdriver

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.3. Disassembly: Removing the armature
Tools:
- Pull-off device
6 41 14 031 000
Attention - For pulling off the armature out of the gear box, the clamping lever must be open
on the FMM 250 Q. ( see left picture )
A pulling off without any damages is only possible if the gear box seats absolutly solidly
on the pulling off device. ( see right picture )
This is only guaranteed by the opened clamping lever.

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.3. Disassembly: Removing the armature
1. Remove the armature with the device
2. Place and clamp the armature with the gear head into the device
3. Twist the top section of the device against the bottom section and pull off
the gear head from the armature
Tools:
- Pull-off device
6 41 14 031 000

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.4. Disassembly: Changing the armature bearing
1. Pull of the bearing on the collector side with the 19mm pull-off device
2. Remove the snap ring on the fan side with the pliers
remove the spherical bearing with the 16mm pull-off device, pull off bearing ring
3. Remove the ball bearing from the armature shaft with the 26mm pull-off device
Tools:
-Circlip pliers
-Pull-off device
16,19,26mm
-Plastic hammer

Sahre / MVK 01.07
All rights reserved by FEIN, in particular as these apply to trademarks.
FEIN retains all powers of disposition such as copying and right of transfer.
FRT: FMM 250 / FMM 250 Q
4.5. Disassembly: Removing the field magnet
1. Take out the air management ring, release and take out both screws
on the field magnet
2. Release the field magnet out of the motor case with light strokes
from the plastic hammer, remove the field magnet
3. Remove the switch rod and switch slide
Tools:
- Torx 15
Screwdriver
- Plastic hammer