Fein Evo wsb series User manual

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1. Starting page

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Contents

1. Technical data

2. Maintenance

3. Electrical function test

4. Disassembly

5. Assembly

6. Tools for maintenance work

7. Modifications, extras, information for maintenance

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1. Technical Data:

Model

WSB

WSG

8-115

13-125

8-115

13-125

9-125

13-125 S

13-150

9-70 E

13-70 E

Order reference

With lock

7 221 20

7 221 14

7 221 21

7 221 15

7 221 25

7 221 28

7 221 16

7 221 22

7 221 17

Without

lock

7 221 35

7 221 34

Idle speed

rpm

10.000

7.000

2.500-

7.000

2.500-

7.000

Power consumption

W

800

1.200

800

1.200

800

1.200

800

1.200

Power output

W

550

750

550

750

550

750

550

750

Mains connection type

1~

Weight without cable

kg

1,7

2,1

1,7

2,0

1,8

2,1

1,8

2,1

Safety class

II

Grinding/cutting wheel

DIN ISO 603

Max. diameter

mm

115

125

115

125

150

125

Thickness

mm

1-6

Elastic backing pad

Max. diameter

mm

115

115/125

115

115/125

125

150

125

Max. circumferential

speed

m/s

80

mounting hole

mm

22,23

Mounting thread

Quick-action clamp

M14

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2. Maintenance

2.1. Regulations

2.2. Cleaning and care

2.3. Carbon brush replacement

2.4. Maintenance intervals

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2.1. Regulations

Electrical tools are only to be repaired, serviced and tested by specially trained

electricians. Inappropriate maintenance and repair may cause serious operational

hazards for the user (BGV A3 ).

Carry out all routine tests in accordance with DIN VDE 0702.

After repairs, observe the regulations according to DIN VDE 0701 Part 1 .

Only use original FEIN replacement parts!

At initial operation, observe the relevant accident prevention regulations of the

trade and professional associations.

For information on intended use in Germany, refer to the product safety act

(Geräte- und Produktsicherheitsgesetz, GPSG).

When outside of Germany, refer to the locally valid product safety act!

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Injury hazards!

- ... through unintentionally switching on the unit.

- Pull plugs before cleaning work.

Once a week, more often when used frequently:

- Check cables (290) for signs of damage.

- Clean the cooling vents

- From outside, blow out the interior of the electrical tool through the

vent outlets using dry compressed air

2.2 Cleaning and care

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2.3. Carbon brush replacement:

The machine is equipped with carbon brushes with automatic switch-off.

When checking the carbon brushes, make sure that they are put back in the

same position and can be moved easily in the carbon brush holder.

If the carbon brushes are run down to a length of 7 mm, they must be replaced

by new carbon brushes.

Only use original FEIN carbon brushes, otherwise the regulations for EMC are

not being observed!

Break in the carbon brushes for 20 minutes at the lowest possible speed

without an electrical load.

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2.4. Maintenance work

After approx. 300 operating hours:

•Disassemble machine

•Thoroughly clean machine

•Replace bearing (armature)

•Replace magnetic ring

•Clean the speed controller (do not moisten)

•Check the cables and strands for abrasions

•Check for good fit of plugs and sockets

•Wash out gears using detergent and regrease

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3. Electrical function test

3.1. Minor functional test

3.2. Major functional test

3.3. Test data

3.4. Testing devices and aids

3.5. Wiring diagram / Connection plan

3.6. Safety test / final inspection

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3.1. Minor functional test

3.1.1. Minor functional test WSB 8-115 + WSB 13-125

3.1.2. Minor functional test WSG 8-115 + WSG 13-125 + WSG 9-125

+ WSG 13-125 S + WSG 13-150

3.1.3. Minor functional test WSG 9-70 E + WSG 13-70 E

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3.1.1. Minor functional test: WSB 8-115 + WSB 13-125

Without main power

•Check assembled cable (290) and protective tubing (270) for signs of

damage

•Can the lever (480) be adjusted and does it snap in smoothly?

•Can clamping bolt (680) be tightened / loosened?

•Is flange (670) free of damage?

•Are the cooling and ventilation slots free of obstructions?

•Is the fan wheel at the armature (750) free of damage?

With main power

•Plug in mains plug

•Start motor using switchpad (95) and lock it

•The motor must not start while the lever (810) is open

•Motor must brake when turned off using switchpad (95)

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3.1.2. Minor functional test: WSG 8-115, WSG 13-125, WSG 9-125,

WSG 13-125 S, WSG 13-150

Without main power

•Check assembled cable (290) and protective tubing (270) for signs of

damage

•Is the grinding wheel flange (900) free of damage?

•Can the grinding wheel flange (910) be screwed on and off?

•Are the cooling and ventilation slots free of obstructions?

•Is the fan wheel at the armature (750) free of damage?

With main power

•Plug in mains plug

•Start motor using switchpad (95) and lock it

•Must must not brake when turned off using switchpad (95)

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3.1.3. Minor functional test: WSG 9-70 E + WSG 13-70 E

Without main power

•Check assembled cable (290) and protective tubing (270) for signs of

damage

•Is the grinding wheel flange (900) free of damage?

•Can the grinding wheel flange (910) be screwed on and off?

•Are the cooling and ventilation slots free of obstructions?

•Is the fan wheel at the armature (750) free of damage?

With main power

•Plug in mains plug

•Switch on motor using switchpad (95) and lock it

•Change the speed using the pushbutton (570)

•Must must not brake when turned off using switchpad (95)

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3.2. Major functional test

3.2.1 Functional test / troubleshooting

3.2.2. Motor

3.2.3. Switching module

3.2.4. Check speed controller 1

3.2.5. Check speed controller 2

3.2.6. Connection lines

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3.2.1. Functional test / troubleshooting

•Motor does not turn off, speed OK

•Motor stutters, but does not start

•Speed does not change

(only WSG ...70E)

•Motor does not turn on (no

function)

•Close lever (only WSB)

•Check main power cable

•Check carbon brushes

•Check connection line

•Check motor

a) Check for elec. continuity (ohms)

b) Operate motor using isolating

transformer

•Check elec. speed controller (at

motor and connect external

switching module )

Replace parts if necessary

or connect properly

Replace parts if necessary

or connect properly

Replace elec. speed

controller

Replace switching module

Check magnetic ring and

replace if nec., check elec.

speed controller properly

snapped in

•Motor starts immediately

•When button presed, motor starts briefly, but turns off immediately

•Motor does not brake (only WSB)

•Speed is not correct

•Motor turns on properly but only runs briefly before turning off

again.

OK

Error

2.

1.

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3.2.2. Motor

Check motor:

a) Electrical continuity test

Unplug motor lines BU and BN, measure electrical continuity.

b) Motor operation using isolating transformer

Unplug all motor lines, connect BK-BK (only WSB), apply voltage

Attach BU and BN

Rated voltage

100 –120 V AC

220 –240 V AC

Testing voltage

Isolating

transformer

max 65 V AC

max. 130 V AC

WSG

WSB

800 W

4,9 Ω

4,6 Ω

1200 W

3,1 Ω

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3.2.3. Switching module

Switching module

- Switching module from WSG ..70 E with variable speed

Contains all functions for testing the various speed

controllers (80).

- Long (LS5V) 3 07 01 255 99 0

- Short (KS5V) 3 07 01 258 99 0

- Note that the speed indicator LEDs are also controlled by

all of the speed controllers (80), so that you can check the

the functionality when inserting the speed controller (80)

into the mains.

- For the WSB models, you also have to press the

“lever button”.

Lever button or speed button

LED speed indicator

Button

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3.2.4. Check speed controller 1

Withlight bulb (100W) and external switching module

1. Unplug all motor lines.

2. Disconnect the speed controller (80) from the field magnet (15).

3. Unplug the ribbon cable and attach the test switching module (KS5V or LS5V).

4. Attach lamp to connector (br and bl).

5. Press two diagonal buttons for motor operation (and lever button for WSB)

>If light bulb flashes briefly, electronics are OK<

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3.2.5. Check speed controller 2

1. 2. 3.

1. Move motor case down to button height (see diagram).

2. Image: Test equipment (“shortened” motor case, switching module and open machine)

3. Check speed controller with motor and external switching module

1. Disconnect speed controller (80) from field magnet (15).

2. Unplug ribbon cable.

3. Plug in test switching module (KS5V or LS5V).

4. Press one button for motor operationg (and lever button for WSB).

>If motor begins to “stutter”, electronics are OK<

When motor casing is moved down, electrically live parts are largely covered and

the carbon brush holders are safely fastened!

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3.2.6. Connection lines

Cable strands:

Do not solder!

And do not use ferrules!

Removing insulation:

8+1 mm

8+1

4,5+1

9,5+1

Ribbon cable:

Check that the ribbon cable does not

slip through the plug holder while

fastening it to the speed controller

(80). Also make sure that the plug

connector fits properly and that the

cable is not buckled. Buckling

Fein EVO WSB Series User manual

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