Festool LEX 3 77-2-5: 7 Settings

16

LEX 3

GB

cleans and lubricates the compressed air and

keeps it free of condensation. Here, the lubricator

should be set so that a drop is applied to the com-

pressed air approx. every 15 minutes.

Damage that occurs as a result of incorrect

compressed air processing is excluded from

warranty claims.

We recommend a service unit with a 3/8" connector,

when up to two Festool compressed air tools are

used.

A compressor that supplies at least 350 l/min at an

operating pressure of 6 bar should be used to sup-

ply compressed air.

The diameter of the piping system must be suffi-

ciently large (at least 9 mm).

6.2

Connection for IAS hose system [2]

The IAS hose system combines several functions in

one hose depending on the version:

– Compressed air supply 

[3-1]

– Exhaust air extraction 

[3-2]

– Dust extraction 

[3-3]

6.3

Switch on/off

Switching-on: Press 

[1-1]

 switch.

Switching off: Release 

[1-1]

 switch.

7 Settings

7.1

Setting and adjusting the speed

Can be adjusted at the control lever 

[1-4]

 between 

This enables you to optimise the material removal

capacity to suit the respective material or applica-

tion.

7.2

Replacing the sanding pad [4]

An optimal work result can only be achieved

using original accessories and consumables.

The use of non-original accessories or con-

sumables invalidates the right to claim under war-

ranty.

Health risk:

 Fitting sanding pads of incorrect

size causes excessive vibration of the ma-

chine.

Tuned to the surface being processed, the machine

can be equipped with three sanding pads of differ-

ent hardnesses.

Hard:

 Coarse and fine sanding on surfaces. Sand-

ing edges.

Soft:

 Universal for coarse and fine sanding, for flat

and convex surfaces.

Extra-soft:

 Fine sanding of moulded parts, arches,

radii. Do not use on edges.

7.3

Attaching sanding accessories using 

StickFix [4b]

The suitable StickFix sandpaper and StickFix sand-

ing cloth can be attached quickly and simply to the

StickFix sanding pad. 



Press the self-adhesive sanding accessory onto

the sanding pad 

[1-5]

.

7.4

Dust extraction



For use of a Festool mobile dust extractor 

with

flow sensor

: Adjust hose diameter of mobile

dust extractor to Ø 27 mm.

To guarantee optimal dust extraction, we recom-

mend using Festool extractors with automatic

switch-on/switch-off device for compressed air

machines.

In order to prevent damage to the pneumatic

motor, dust extraction must not be carried

out on the pneumatic tool when it is at stand-

still.

8 Working with the machine

Please observe all mentioned safety infor-

mations and the following rules when work-

ing:

– Always secure the workpiece in such a manner

that it cannot move while being processed.

For work that generates dust, wear a dust

mask.

CAUTION

Risk of injury



The machine should always be disconnected

from the compressed air supply before any work

is carried out on the machine.

LEX 3 77/2,5

7.800 - 10.500 min

-1

LEX 3 125/3, 125/5

7.000 - 9.500 min

-1

LEX 3 150/3, 150/5, 150/7

7.000 - 10.000 min

-1

WARNING

Dust hazard



Always work with a dust extractor.



Always observe country-specific regulations.