Pallmann Cobra II User manual

®
Operating Instructions
PALLMANN Cobra II Sanding Machine
PALLMANN | 14509 E. 33rd Place, Unit G | Aurora CO 80011 | 720.374.4810 | Fax [phone] | www.pallmann.us

Pallmann Cobra II Manual 2
3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32
Reproduction in whole or in part requires written permission from
Pallmann USA, Aurora CO. Toll free 866-505-4810.
No liability for any damage arising from the use of this manual.
Subject to changes.

Pallmann Cobra II Manual 3
3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32
Table of Contents
1.0 Introduction ............................................................................................................... 4
2.0 Scope of delivery...................................................................................................... 5
3.0 MachinesspecicationsCobraII............................................................................ 6
3.1 Important components ............................................................................................ 6
3.2 Technical data ........................................................................................................... 7
3.3 Safety and machine protection............................................................................... 7
4.0 Proper Use ................................................................................................................. 7
5.0 Starting the machine................................................................................................ 8
5.1 Mounting the handle ............................................................................................... 8
5.1.1 Adjusting the handle height ................................................................................... 9
5.2 Mounting the dust pipe........................................................................................... 9
5.3 Mounting the motor............................................................................................... 10
5.4 Installing the belt.................................................................................................... 11
5.5 Adjusting the dust bag ..........................................................................................12
5.6 Adjusting the wall bumper wheels ......................................................................13
5.7 Connecting the Cobra II to the main power supply ..........................................14
6.0 Disassembling for transport..................................................................................15
6.1 Removing the handle............................................................................................. 15
6.2 Removing the motor ..............................................................................................16
6.2 Transporting the machine...................................................................................... 17
7.0 Operating the COBRA II ........................................................................................ 18
7.1 Protective clothing and equipment ..................................................................... 18
7.2 Safety instructions regarding dust ....................................................................... 19
7.3 Disposing of sanding dust.....................................................................................19
7.4 Replacing the sanding belt ...................................................................................20
7.5 Adjusting the sanding pressure............................................................................21
7.6 Safety instructions for electrical connections ....................................................21
7.7 Switching on/off the Cobra II with the cockpit control panel ..........................22
7.8 Sanding with the COBRA II ...................................................................................23
8.0 Maintenance............................................................................................................27
8.1 Changing the sanding drum .................................................................................27
8.2 Adjusting the running wheels...............................................................................29
8.3 Adjusting the caster wheels.................................................................................. 31
8.4 Adjusting the tension roller................................................................................... 31
8.5 Replacing the belt ..................................................................................................33
8.6 Checking dust extraction.......................................................................................33
8.7 Switching off and storing the machine................................................................ 33
9.0 Warranty................................................................................................................... 34

Pallmann Cobra II Manual 4
1.0 Introduction
Thank you for your purchase of the PALLMANN Cobra II sanding machine.
The best choice with respect to quality and performance. Since 1950, Cobra
sandingmachineshavebeenindustryleadersinthewoodooringmarket.We
channel this rich history of machine expertise into every Cobra II that leaves our
facility in IIsfeld, Germany. All Cobra II machines then undergo a rigorous 20
point inspection and testing procedure at our North American Headquarters in
Aurora, Colorado.
These operating instructions contain important information for the use and safe
operation of the Cobra II.
®
Caution!
Read these operating instructions carefully before assembling or operating the
COBRA II. Ensure that all operators read these operating instructions prior to
operating the machine.
Adherence to the safety notes helps to protect against potential dangers for health
and personal safety and to prevent an improper utilization 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anyonewithoutsufcientskillsandknowledgetooperatethemachine.
fatal

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3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32
1. machine
2. power cord with female twist lock
3. respirator
4. operating instructions
5. allen keys: 5 mm, 6 mm, 10 mm
6. running wheel adjustment gauge
7. tool bag
8. fork wrench: 10 mm, 13 mm, 17 mm, 30/36 mm
9. hearing protection
10. dust containment attachments
2.0 Scope of delivery
2.0 Scope of delivery
1

Pallmann Cobra II Manual 6
3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32
3.0 MachinespecicationsofCobraII
3.1 Important components
1. Sanding pressure adjustment 9. Belt cover
2. Caster wheels 10. Motor
3. Running wheels 11. Cockpit
4. Access door 12. Power cord holder
5. Star-shaped knob 13. Rear carrying bar
6. Motor plug 14. Main lifting lever
7. Front carrying bar 15. Feathering handle
8. Wall bumper wheel 16. Hood

Pallmann Cobra II Manual 7
3.2 Technical data
Single-phase AC motor ............................................................ 240V, 60 HZ
Motor capacity....................................................................3,68 kW (5,0HP)
Sanding drum speed .................................................................... 2550 rpm
Sanding width ..................................................................................... 7-7/8”
Sanding belt dimensions ................................................. 7-7/8’’ x 29-1/2’’
Total machine weight ........................................................................212 lbs
3.3 Safety and machine protection
Cobra II is equipped with an
- overcurrent cutout
- no-volt release
The overcurrent cutout protects the machine and operator from danger in case of
short circuits or power surges into the machine.
The no-volt release prevents uncontrolled restart of the machine after power
failure. The motor will not start automatically when the power returns; it will have to
be switched on again.
4.0 Proper use
The Cobra II wood oor sander is suitable for dry sanding of wood oors. No other
use is recommended.
Caution!
Never use Cobra II for wet procedures (fatal risk from electric shock)!
fatal
fatal

Pallmann Cobra II Manual 8
5.0 Starting the machine
5.1 Mounting the handle
The Cobra II is delivered with the handle and dust pipe dismantled.
Caution!
Injury to the operator or other persons could occur or damage could occur if the
machine starts up unintentionally. Disconnect the machine from the main power
supply before working on the machine!
fatal
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  xing 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 )  rmly  xes the two parts of the connecting rod.
3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32

Pallmann Cobra II Manual 9
6 Disassembling for transport
For easy transportation the motor and the guide tube can be removed.
6.1 Removing the guide tube
Caution!
Injury to the operator or other persons could occur or damage could occur if the machine
starts up unintentionally. Disconnect the machine from the power supply before working
on the machine!
Instructions:
1. Fold down the cable arm (3).
2. Move the main lifting lever (2) to the front position in order to lower the sanding drum to the
floor. This removes the load from the control rod (5).
3. Loosen both of the wing screws a little (4). Push the handle down to detach the control rod
(5) from the connector (8).
4. Open the guide tube support (7) with the clamping lever (6) and pull the guide tube (1) out.
0
0
2
1
1
9 COBRA CLASSIC #74540 09/2014
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.
5.2 Mounting the dust pipe

Pallmann Cobra II Manual 10
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 16).
Before placing the motor onto the machine, make sure the latch ( 1 ) is in the open
position. When the motor is placed correctly, lock the latch ( 1 ) to  x the motor.
3 COBRA CLASSIC #74540 09/2014
Contents
1 Introduction..................................................................................................................................................................... 4
2 Scope of delivery ............................................................................................................................................................ 5
3 Machine specifications COBRA CLASSIC ................................................................................................................... 6
3.1 Important components ...................................................................................................................................................... 6
3.2 Technical data .................................................................................................................................................................. 7
3.3 Safety and machine protection facilities............................................................................................................................ 7
4 Proper use ....................................................................................................................................................................... 7
5 Assembly of the machine............................................................................................................................................... 8
5.1 Installing the guide tube ................................................................................................................................................... 8
5.2 Installing the motor ........................................................................................................................................................... 8
6 Disassembling for transport ......................................................................................................................................... 9
6.1 Removing the guide tube ................................................................................................................................................ 9
6.2 Removing the motor.......................................................................................................................................................... 10
7 Operating the COBRA CLASSIC .................................................................................................................................. 11
7.1 Protective clothing and equipment .................................................................................................................................. 11
7.2 Fitting the dust bag ........................................................................................................................................................ 11
7.3 Safety instructions regarding dust .................................................................................................................................... 12
7.4 Disposing of sanding dust ............................................................................................................................................... 12
7.5 Replacing the sanding belt .............................................................................................................................................. 13
7.6 Adjusting the sanding pressure ....................................................................................................................................... 14
7.7 Safety instructions for electric cable and connectors ...................................................................................................... 14
7.8 Connecting the COBRA CLASSIC to the mains power .................................................................................................. 15
7.9 Remarks about sanding parquet and plank floors .......................................................................................................... 16
7.10 Sanding with the COBRA CLASSIC ............................................................................................................................... 19
8 Maintenance ................................................................................................................................................................... 24
8.1 Changing the sanding drum ............................................................................................................................................ 24
8.2 Adjusting the running wheels .......................................................................................................................................... 26
8.3 Adjusting the castor wheels ............................................................................................................................................ 27
8.4 Adjusting the tension roller ............................................................................................................................................... 28
8.5 Changing the belt.............................................................................................................................................................. 29
8.6 Checking dust extraction ................................................................................................................................................. 30
8.7 Switching off and storing the machine ............................................................................................................................ 30
9 Declaration of conformity .............................................................................................................................................. 31
10 Warranty........................................................................................................................................................................... 32