WOLFF PALLMAN 062023 Operating and installation instructions

PALLMANN GmbH l Ein Unternehmen der Uzin Utz AG | Im reuz 6 | 97076 Würzburg | Telefon [phone] | Telefax [phone] | E-Mail: [e-mail]
Translation of the original instruction
Parquet sanding machine Cobra 2,5kW/50Hz,
#062023 230V (U )
Item no. 061307

As of: March 2011
© 2011
All rights reserved.
Reproduction in whole or in parts requires written permission from
ermann FRANK Gmb & Co. KG, 71665 Vaihingen/Enz, Deutschland.
No liability for any damage arising from the use of this brochure.
Subject to alterations.
WOLFF Gmb & Co. KG
Ungerhalde 1
D-74360 Ilsfeld
Deutschland
Fon: [phone]
Fax: [phone]
www.wolff-tools.de | info (at) wolff-tools.de
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3 03/2010
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3 Description of the parquet sanding machine Cobra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.1 Important components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2 Techn cal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.3 Safety and mach ne protect on dev ces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5 Starting the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.1 Mount ng the handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5.2 Mount ng the dust p pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5.3 Mount ng the motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.4 Mount ng the belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5.5 Mount ng the dust bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.6 Adjust ng the wall bumper wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.7 Connect ng the Cobra to the ma ns supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6 Disassembling for transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6.1 Remov ng the handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6.2 Remov ng the motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.3 Transport ng the mach ne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7 Operating the Cobra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.1 Proper cloth ng and equ pment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.2 Safety nstruct ons regard ng dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
7.3 D sposal of sand ng dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
7.4 Replac ng the abras ve belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
7.5 Adjust ng the sand ng pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.6 Safety nstruct ons for electr c cable and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.7 Remarks about sand ng woodfloor and floorboard floors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.8 Sw tch ng on/off the Cobra w th the cockp t control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.9 Sand ng w th the Cobra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
8.1 Replac ng the sand ng roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
8.2 Adjust ng the runn ng wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
8.3 Adjust ng the castors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
8.4 Adjust ng the tens on roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
8.5 Replac ng the lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
8.6 Check ng dust extract on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
8.7 Sw tch ng off and stor ng the mach ne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
9 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
10 arranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

1 Introduction
Dear customer:
Congratulations on purchasing the FRANK parquet sanding machine Cobra, the correct
choice with respect to quality and performance.
The Cobra is the result of a consistent implementation of many years of experience.
This machine combines extraordinary high sanding performance and excellent sanding
quality with easy to operate, proven and reliable technology.
These operating instructions contain important information for the use and safe operation of
the Cobra.
Caution!
Read these operating instructions carefully before assembling or operating
the Cobra. Ensure that all operators read these instructions before they use the
machine. Adherence to the safety notes helps to avoid potential danger of life
and limb. It also prevents improper use of the machine.
Before starting to work, make yourself familiar with the operation of the machine.
It’s too late if you do it while working!
Never allow anybody to operate the machine without sufficient skills and knowledge.
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This brochure uses the following symbol to mark important instructions for safety
and preventing damage:
Please give special attention to the marked instructions. They refer to a potentially dangerous situation.
Failure to comply can result in fatal or severe injuries and damage to property.

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2 Scope of delivery
1. Machine
2. PUR cable with plug and coupling
3. Dust mask
4. Operating instructions
5. Allen keys
5 mm, 6 mm, 10 mm
6. Running wheel adjustment gauge
7. Tool bag
8. Fixed spanners
10 mm, 13 mm, 17 mm, 30/36 mm
9. earing protection
10 Adapter, vacuum cleaner
Adapter, vacuum cleaner Dust
Not shown: 2 dust bags
Not shown: Abrasive belts (2 x with grit 36, 2 x grit 60, 1 x grit 100)
Not shown: 10 plastic inlays
10
1

3 Description of the parquet sanding machine Cobra
3.1 Important components
1 Sanding pressure regulator 9 Belt cover
2 Castors 10 Motor
3 Running wheels 11 Cockpit
4 Roller cover 12 Cable arm
5 Star-shaped knob 13 Rear carrying bar
6 Motor plug 14 Main lifting lever
7 Front carrying bar 15 Soft lowering lever
8 Wall bumper wheel 16 ood
17 Dust tube
18 Connection ports - dust tube /
external extraction
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12
10
13
2
95
7
483
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3.2 Technical data
Single-phase AC motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 V, 50 z
Motor capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 kW
Roller speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,100 rpm
Sanding width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mm
Abrasive belt dimensions . . . . . . . . . . . . . . 200 mm x 750 mm, endless
Weight: andle compl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12,8 kg
Motor compl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26,2 kg
Basic unit compl. . . . . . . . . . . . . . . . . . . . . . . . . . . 49,2 kg
Dust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,5 kg
Machine compl. . . . . . . . . . . . . . . . . . . . . . . . . . . . 89,7 kg
3.3 Safety and machine protection devices
The parquet sanding machine Cobra is equipped with a
- zero voltage switch.
The zero voltage switch switches off the machine in case of power failure and the motor will not
restart automatically when power returns.
4 Proper use
The parquet sanding machine Cobra is suitable for dry sanding of woodfloor and
floorboard floors. No other use shall be allowed.
Caution!
Do not use the Cobra for wet finishing (danger of death from electric shock)!

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5 Starting the machine
5.1 Mounting the handle
Note!
The Cobra is delivered with handle and dust pipe dismantled.
Caution!
There is the risk of injury or damage caused by an unintentional starting of the machine.
Disconnect the machine from the mains supply before working on the machine!
How to mount the handle:
1. Insert the bottom part of the connecting rod through the slot of the handle mount.
Make sure that the fixing studs ( 1 ) are inserted into the positioning holes ( 2 ).
2. Tighten the star-shaped knob ( 3 ).
3. Check the position number of the handle.
4. Insert the stud ( 4 ) on the rod into the corresponding hole ( 5 ).
5. The clamp sleeve ( 6 ) firmly fixes the two parts of the connecting rod.
1
4
2
6
5
3
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5.1.1 Adjusting the handle height
1. Lower the main lifting lever ( 1 ) to the front.
2. Slide the clamp sleeve ( 2 ) to the top and take apart the connecting rod ( 3 ).
3. Loosen the clamp bolt ( 4 ).
4. Pull the locking stud ( 5 ) and have it snapped in at the desired position.
5. Assemble the connecting rod ( 3 ) on this position.
5.2 Mounting the dust pipe
Insert the dust pipe ( 1 ) into the pipe connection ( 2 ) while gently rotating it.
It is sealed with 2 O-rings.
3
4
5
2
1
2
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5.3 Mounting the motor
The machine is delivered with the motor already mounted.
Due to reasons of weight, it may however be necessary to remove the motor to transport the
machine (see chapter 6.2, Removing the motor, on page 17).
Before placing the motor onto the machine, make sure the catch ( 1 ) is in the open position.
When the motor is placed correctly, lock the catch ( 1 ) to fix the motor.
1
1
1
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5.4 Installing the belt
1. Swing out the lever ( 4 ) and lift the belt tensioner ( 2 ) until the locking stud ( 3 ) unlatches.
2. Insert the belt ( 1 ) around the belt pulleys and deflection roller as shown in the figure.
3. Slightly lift the belt tensioner ( 2 ) and pull back the locking stud ( 3 ).
4. Lower the belt tensioner to take up belt slack.
5. Pull the lever ( 4 ) and fold it in.
1
2
3
4
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5.5 Mounting the dust bag
Caution!
Only use original FRAN dust bags for the parquet floor sanding machine Cobra.
Caution!
Make sure the dust bag is fitted securely to the dust pipe before sanding.
How to install the dust bag:
Pull the outer bag over the dust pipe behind the pipe reinforcement ( 1 ).
Lace up the cords carefully.
Check the dust bag prior to each commissioning
Switch on the machine and check the dust bag for leaks and the correct seating in the
area of the dust tube connection.
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1

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5.6 Adjusting the wall bumper wheels
1. Loosen carrying bar ( 1 ) with the fixed spanner (SW 22)
2. Unscrew left bumber wheel ( 2 ).
3. Tighten the carrying bar ( 1 ) again.
4. Loosen counter nut ( 3 ) with the fixed spanner (SW 24)
5. Unscrew right bumber wheel ( 4 )
6. Tighten counter nut ( 3 )
The carrying bar can be locked by the fixed spanner (SW 24)
1
2
3
4

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5.7 Connecting the Cobra to the mains supply
How to connect the machine to the mains supply:
1. Make sure that the switch ( 1 ) is in the off position.
The machine must be switched off before connecting it to the mains supply.
2. The main lifting lever for the sanding roller ( 2 ) must be folded backward so that
the sanding roller is raised from the floor.
3. ang the pivoting cable arm into the left or right cable arm bracket as required. Wind the
power cable through the curls at the end of the cable arm ( 3 ) to keep the cable away from
the sanding zone.
4. Connect the motor coupling ( 4 ) of the control cable to the motor.
5. Connect the coupling ( 5 ) of the lamp cable to the plug ( 5 ).
Caution!
Make sure that the abrasive belt is tight before you switch on the motor.
Caution!
Make sure that the sanding roller is raised from the floor before you switch on the motor.
Caution!
Risk of injury if the machine starts unintentionally! Disconnect the machine from
the mains supply when not in use, when changing the abrasive belt, or when carrying out
service work on the machine.
2
1
3
4
5

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6 Disassembling for transportation
For easier transportation, the handle, the dust pipe, and the motor can be removed.
6.1 Removing the handle
There is the risk of injury or damage caused by an unintentional starting of the machine.
Disconnect the machine from the mains supply before working on the machine!
How to remove the handle:
1. Disconnect the motor and lamp couplings.
2. Fold down the cable arm ( 1 ).
3. Fold the main lifting lever ( 2 ) to the front position to lower the sanding roller to the
floor. This removes load from the connecting rod ( 3 ).
4. Slide the clamp sleeve ( 4 ) to the top and take apart the two halves of the connecting rod ( 3 ).
5. Remove the star-shaped knob ( 5 ), and you can lift off the handle.
3
1
2
4
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6.2 Removing the motor
There is the risk of injury or damage caused by an unintentional starting of the machine.
Disconnect the machine from the mains supply before working on the machine!
How to remove the motor:
1. Make sure that the motor switch is in the off position and that the power cable is
disconnected from the motor plug.
2. Unscrew the bolt ( 1 ) from the belt cover and open the cover.
3. Slacken the belt by raising the belt tensioner ( 2 ) until the locking stud ( 3 ) unlatches.
4. Remove the belt.
6. Open the catch ( 4 ) on the motor base.
7. You can lift off the motor.
8. See chapter 5.3, page 11 on how to mount the motor.
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2
3
1
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6.3 Transporting the machine
To carry the machine, use the two carrying bars at the front ( 1 ) and back ( 2 ).
The front carrying bar ( 1 ) can be folded up.
The transport plate is recommended for transporting the machine.
When the machine is placed on the transport plate, the sanding roller and the
castors are unloaded.
Accessory: Transport plate, item no. 051224
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Transport plate
1
1
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7 Operating the Cobra
7.1 Proper clothing and equipment
Noise emissions from the tool
The following emissions values have been measured for the COBRA parquet edge
sanding machine in accordance with EN 60745:
Sound pressure level (Lpa) Idling 84,2 dB Under load 80,9 dB
Sound power level (LWA) Idling 85,2 dB Under load 91,9 dB
Measuring inaccuracy: + / - 1.5 dB
The noise generated by using the tool is dependent on various factors. Local conditions, such
as the size of the room and the properties of the floor surface have an impact on noise emissi-
ons.
Caution! Wear ear defenders! The levels of noise generated are damaging to the hearing.
While operating the tool, you must wear ear defenders.
Use the capsule ear defenders which are supplied as an accessory.
Hand/arm vibration
The following vibration levels have been measured, in accordance with EN 60745:
Vibration emissions value: ah/DS < 2,5 m/s2
Measuring inaccuracy: K = 1,5 m/s2
Caution! Wear dust mask!
Wear a dust mask when operating the parquet sanding machine Cobra S or when
disposing of the sanding dust (see chapter 7.2 and 7.3).
Wear the dust mask supplied as accessory with the machine.
Caution! Wear protective goggles!
Wear protective goggles to protect your eyes when operating the parquet sanding
machine Cobra S or carrying out any work on the machine.
Caution! Wear proper work clothes!
Do not wear loose clothes when operating the parquet sanding machine Cobra S or
carrying out any work on the machine. The clothes might get caught in moving parts.

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7.2 Safety instructions regarding dust/Internal dust separation device
The Cobra parquet sander has an internal separation device for the sanding dust in the
form of a dust bag; the inspection of this dust bag is described under point 5.5.
Always work with the dust sack in place; it may not be damaged.
As an alternative to the internal dust separation device, you can connect an external
extraction device to the Cobra. The minimum required air speed of 20 m/s may not
be undercut.The external extraction device can be connected to
the connection ports (1) of the Cobra using the adapter
provided in the scope of delivery. (see also 8.6)
We recommend the Frank Dust external vacuum.
Caution! Ultra-fine sanding dust!
Wear a dust mask when sanding woodfloor or floorboard flooring.
A dust mask is supplied as accessory with the machine.
When the machine is used for its proper purpose, the sanding of wooden floors naturally
produces dust. The machine is equipped with an integrated dust absorption system to blow
the dust into the dust bag. The dust is collected in the dust bag. Nevertheless, the system can-
not prevent the release of fine and ultra-fine dust.
Caution! Health hazard!
Wood dust, particularly when treated with impregnating agents, solvents or coatings,
can cause allergic reactions (e.g. of the skin or respiratory system) after an allergisation
period. Beechwood and oakwood dust is classified as carcinogenic (nasal mucosa
cancer). Dust from other types of wood is suspected of having carcinogenic effects.
Caution! Risk of fire!
No smoking! Do not smoke while sanding!
Ignition sources are prohibited in rooms where sanding work is being carried out!
Air the rooms thoroughly.
In combination of an ignition source and the oxygen in the air, wood dust can cause
fires and explosions.
Caution! Risk of fire!
Sanding over metal parts, like e.g. nails, can produce sparks which are blown
into the dust bag together with the wood dust. Glowing metal chips can ignite
a fire in the dust bag even hours later.
Every time the machine is stopped or after completing work, immediately empty
the sanding dust in the dust bag to a fireproof, non-flammable container.
The container must be covered with a fireproof, non-flammable lid.
Store the container only outdoors.
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7.3 Disposal of sanding dust / Emptying the dust bag
1. Remove loose dust by gently tapping on the dust bag.
2. Carefully open the draw cord on the dust bag and remove the bag.
eep the dust bag opening closed.
3. Empty the dust bag outdoors into a non-flammable waste bin.
Caution! Risk of fire!
Because of the fire risk, the sanding dust contained in the dust bag must always be
disposed of immediately every time the machine stops or when sanding is completed.
The sanding dust must be disposed of in a fireproof, non-flammable container.
The container must be covered with a fireproof, non-flammable lid.
Store the container only outdoors.
Caution!
When a third of the dust bag is filled with sanding dust at the latest, empty the dust bag.
Otherwise, the dust absorption performance of the machine will deteriorate.
The sanding dust must be disposed of in a fireproof, non-flammable container.
The container must be covered with a fireproof, non-flammable lid.
Store the container only outdoors.
Caution!
Always wear a dust mask when disposing of the sanding dust.
A dust mask is supplied as accessory with the machine.