ROKAMAT Gex User manual

1) Rokamat Gex (21GX0673)
2) 2014/30/EU, 2006/42/EG, 2012/19/EU, 2011/65/EU,
2001/95/EG, EG No. 1907/2006
3) EN 60745-1:2009/A11:2010, EN 60745-2-3:2011/A2:2013 +
A11:2014 + A12:2014 + A13:2015, EN ISO 12100:2010-11
4) Kammerer GmbH, An der B 10, 75196 Remchingen
Remchingen, 15.04.2021
Beate Kammerer
Head of Technical Documentation
EN
Original Instructions
3
Gex
Art.-Nr. 85000
© Kammerer GmbH. Printed in Germany. Technical information and illustrations are not binding
and subject to change without notice. BA_Gex_EN_001
ROKAMAT
Kammerer GmbH
An der B 10
75196 Remchingen
Deutschland
www.rokamat.com

Gex
2
[1]
6-1
1-10
1-1
1-3
1-4
1-8
1-6
1-7
1-9
1-12
I
0
[3]
[2]
1-2
[4]
[5]
[6]
[8]
[7]
7-4
7-1
7-2
7-5
2-2
4-1
4-2
5-1
5-2
1-5
1-11
1-13
2-1
2-3
2-5
2-6
2-4
4-3
4-4
4-5
4-6
8-1
7-3
7-6

Gex en English
3
1. Symbols ......................................................................... 3
2. Safety Instructions .................................................... 3
3. Intended Use ................................................................4
4. Technical Specifications ..........................................4
5. Device Components................................................... 5
6. Commissioning............................................................ 5
7. Instructions for Use................................................... 5
8. Working with the Power Tool ................................ 6
9. Maintenance and Care.............................................. 6
10. Spare Parts and Accessories.................................. 6
11. Environmental Protection....................................... 6
12. Declaration of Conformity....................................... 6
13. Troubleshooting ......................................................... 7
For your own protection and for the protec-
tion of your power tool, pay attention to all
parts of the text that are marked with this
symbol!
Risk of electric shock!
Read operating instructions and safety no-
tices! *)
Wear protective goggles! *)
Wear ear protection!
Wear a dust mask!
Disconnect from the power supply!
Two-hand operation *)
Do not dispose of as domestic waste! *)
Important advice/information
Safety class I *)
~ Alternating current *)
Confirms the conformity of the power tool
with the directives of the European Com-
munity. *)
Confirms the conformity of the power tool
with UK legislation. *)
*)These symbols are (also) on the device.
For your safety
Read all safety warnings and instructions.
Failure to follow all safety warnings and in-
structions may result in electric shock, fire
and/or serious injury.
Do not use this power tool before you have
thoroughly read and completely understood
this Instruction Manual and the enclosed
“General Safety Instructions”.
Keep all safety instructions and information for
future reference. Pass on your power tool only to-
gether with these documents.
Please also observe the relevant national industrial
safety regulations.
Special Safety Instructions
Safety Warnings common for Grinding, Sanding
and Polishing Operations:
a] This power tool is designed to be used as a
sander (with sandpaper) and polisher. Read
all safety warnings, instructions, illustra-
tions and specifications provided with this
power tool. Failure to follow all instructions
listed below may result in electric shock, fire
and/or serious injury.
b] This power tool is not suitable for coarse
sanding, sanding with a wire brush, polishing
and abrasive cutting. Operations for which the
power tool was not designed may create a haz-
ard and cause personal injury.
c] Do not use accessories which are not specifi-
cally designed and recommended by the tool
manufacturer. Just because the accessory can
be attached to your power tool, it does not as-
sure safe operation.
d] The rated speed of the accessory must be at
least equal to the maximum speed marked on
the power tool. Accessories running faster
than their rated speed can break and fly apart.
e] The outside diameter and the thickness of
your accessory must be within the capacity
rating of your power tool. Incorrectly sized ac-
cessories cannot be adequately guarded or
controlled.
f] Threaded mounting of accessories must
match the grinder spindle thread. For acces-
sories mounted by flanges, the arbor hole of
the accessory must fit the locating diameter
of the flange. Accessories that do not match
the mounting hardware of the power tool will
run out of balance, vibrate excessively and may
cause loss of control.
g] Do not use a damaged accessory. Before each
use inspect the accessory such as abrasive
wheels for chips and cracks, backing pad for
cracks, tear or excess wear, wire brush for
loose or cracked wires. If power tool or acces-
sory is dropped, inspect for damage or install
an undamaged accessory. After inspecting
and installing an accessory, position yourself
and bystanders away from the plane of the
rotating accessory and run the power tool at
maximum no-load speed for one minute.
Damaged accessories will normally break
apart during this test time.
h] Wear personal protective equipment. De-
pending on application, use face shield,
safety goggles or safety glasses. Where ap-
propriate, wear dust mask, hearing protec-
tors, gloves and workshop apron capable of
stopping small abrasive or workpiece frag-
ments. The eye protection must be capable of
stopping flying debris generated by various op-
erations. The dust mask or respirator must be
capable of filtrating particles generated by
your operation. Prolonged exposure to high in-
tensity noise may cause hearing loss.
i] Keep bystanders a safe distance away from
work area. Anyone entering the work area
must wear personal protective equipment.
Fragments of workpiece or of a broken acces-
sory may fly away and cause injury beyond im-
mediate area of operation.
j] Hold the power tool by insulated gripping
surfaces only, when performing an operation
where the cutting accessory may contact hid-
den wiring or its own cord. Cutting accessory
contacting a “live” wire may make exposed
metal parts of the power tool “live” and could
give the operator an electric shock.
k] Position the cord clear of the spinning acces-
sory. If you lose control of the power tool, the
cord may be cut or snagged and your hand or
arm may be pulled into the spinning accessory.
l] Never lay the power tool down until the ac-
cessory has come to a complete stop. The
spinning accessory may grab the surface and
pull the power tool out of your control.
m] Do not run the power tool while carrying it at
your side. Accidental contact with the spinning
accessory could snag your clothing, pulling the
accessory into your body.
n] Regularly clean the power tool’s air vents.
The motor’s fan will draw the dust inside the
housing and excessive accumulation of pow-
dered metal may cause electrical hazards.
o] Do not operate the power tool near flamma-
ble materials. Sparks could ignite these mate-
rials.
p] Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Kickback and related warnings
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush or any
other accessory. Pinching or snagging causes rapid
stalling of the rotating accessory which in turn
causes the uncontrolled power tool to be forced in
the direction opposite of the accessory’s rotation at
the point of the binding.
For example, if an abrasive wheel is snagged or
pinched by the workpiece, the edge of the wheel
that is entering into the pinch point can dig into the
surface of the material causing the wheel to climb
out or kick out. The wheel may either jump toward
or away from the operator, depending on direction
of the wheel’s movement at the point of pinching.
Abrasive wheels may also break under these con-
ditions.
Kickback is the result of power tool misuse and/or
incorrect operating procedures or conditions and
can be avoided by taking proper precautions as
given below.
a] Maintain a firm grip on the power tool and po-
sition your body and arm to allow you to re-
sist kickback forces. Always use auxiliary
handle, if provided, for maximum control over
kickback or torque reaction during start-up.
The operator can control torque reactions or
kickback forces, if proper precautions are
taken.
1. Symbols
2. Safety Instructions
WARNING!
Contents

Gex en English
4
b] Never place your hand near the rotating ac-
cessory. Accessory may kickback over your
hand.
.c] Do not position your body in the area where
power tool will move if kickback occurs. Kick-
back will propel the tool in direction opposite to
the wheel’s movement at the point of snagging.
d] Use special care when working corners, sharp
edges, etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing
have a tendency to snag the rotating accessory
and cause loss of control or kickback.
e] Do not attach a saw chain woodcarving blade
or toothed saw blade. Such blades create fre-
quent kickback and loss of control over the
power tool.
Safety Warnings Specific for Grinding Oper-
ations
Use only wheel types that are recommended for
your power tool and the specific guard designed
for the selected wheel. Wheels for which the
power tool was not designed cannot be adequately
guarded and are unsafe.
The grinding surface of the centre depressed
wheels must be mounted below the plane of the
guard lip. An improperly mounted wheel that pro-
jects through the plane of the guard lip cannot be
adequately protected.
The guard must be securely attached to the
power tool and positioned for maximum safety,
so the least amount of wheel is exposed to-
wards the operator. The guard helps to protect
operator from broken wheel fragments and acci-
dental contact with wheel and sparks which could
ignite clothing.
Wheels must be used only for recommended ap-
plications.
Always use undamaged wheel flanges that are
of correct size and shape for your selected
wheel. Proper wheel flanges support the wheel
thus reducing the possibility of wheel breakage.
Flanges for cut-off wheels may be different from
grinding wheel flanges.
Do not use worn down wheels from larger power
tools. Wheel intended for larger power tool is not
suitable for the higher speed of a smaller tool and
may burst.
Safety warnings specific for grinding and
sanding operations
Do not use excessively oversized sanding disc pa-
per. Follow manufacturers recommendations,
when selecting sanding paper. Larger sanding pa-
per extending beyond the sanding pad presents a
laceration hazard and may cause snagging, tearing
of the disc or kickback.
Safety Warnings Specific for Polishing Op-
erations
Do not allow any loose portion of the polishing
bonnet or its attachment strings to spin freely.
Tuck away or trim any loose attachment strings.
Loose and spinning attachment strings can entan-
gle your fingers or snag on the workpiece.
Additional safety instructions
Particles generated when working with this ma-
chine may contain substances that can cause can-
cer, allergic reactions, respiratory diseases, birth
defects or other propagation defects. Some of
these substances include: Lead (in paint containing
lead), mineral dust (from bricks, concrete etc.), ad-
ditives used for wood treatment (chromate, wood
preservatives), some wood types (such as oak or
beech dust), metals, asbestos.
The risk depends on for how long the user or nearby
persons are exposed to the substance.
This dust must not be allowed to enter your body.
Do the following to reduce exposure to these sub-
stances:
- Ensure good ventilation of the workplace.
- Wear appropriate protective equipment, such as
respirators able to filter microscopically small
particles.
- To protect your health, wear a suitable
protective mask.
- Always wear protective goggles to protect
against sanding hazards.
- Connect the electric power tool to a suitable ex-
traction system.
- Sweeping or blowing stirs up dust.
- Vacuum or wash the protective clothing. Do not
blow, beat or brush.
Collect the generated particles at the source, avoid
deposits in the surrounding area.
Observe the relevant guidelines for your material,
staff, application and place of application (e.g. oc-
cupational health and safety regulations, dis-
posal).
If potentially explosive or self-igniting dust is pro-
duced during sanding, the machining instructions
issued by the material manufacturer must always
be followed.
Attention: Risk of fire! Avoid overheating the
grinding material and the sander. Always empty
the dust container before taking a break. Swarf in
the filter bag or filter of the extraction system may
self-ignite in unfavorable conditions such as flying
sparks when grinding metals. Particular danger ex-
ists if the swarf is mixed with paint, polyurethane
residue or other chemical materials and the grind-
ing material is hot after long periods of work.
Damaged, eccentric or vibrating tools must not be
used.
There must be no unprotected persons in the ejec-
tion direction of the tool and the immediate vicinity.
Always use an antistatic suction hose with the
power tool. A slight electric shock may cause you to
panic briefly and become distracted, which may re-
sult in an accident.
When the safety clutch responds, switch off the
machine immediately!
Do not overload the motor for a long period. Engine
noise should be regular (not wave-like). Unsteady
engine performance can be perceived acoustically.
Take a break when the machine is heated up
strongly and let it cool down again. To that let the
motor idle at top speed for some time.
Don’t bend the flexible drive shaft!
Start working with the lowest speed in order to get
a feel for the machine.
Don’t put the running motor on the ground! Dirt may
get sucked in and cause damage.
Always use original ROKAMAT abrasives. Foreign
abrasives are not suitable for the speed of the
sander and may break.
Pull the plug out of the socket before making any
adjustments, converting or servicing the machine.
Ensure sufficient cable clearance. Use only exten-
sion cables permitted for outdoor use.
Keep the carry case out of reach of children. Chil-
dren may suffocate or be strangled when playing
with the carry case.
Emission levels
NOTE! Values for the A-weighted sound pressure
level and for the total vibration values can be found
in the “Technical specifications” table at page 9.
The vibration emission level given in this infor-
mation sheet has been measured in accordance
with a standardized test and may be used to com-
pare one tool with another. It may be used for a
preliminary assessment of exposure.
CAUTION! The indicated measurements refer to
new power tools. Daily use causes the noise and vi-
bration values to change.
The declared vibration emission level represents
the main applications of the tool. However, if the
tool is used for different applications, with differ-
ent accessories or poorly maintained, the vibration
emission may differ. This may significantly in-
crease the exposure level over the total working
period. However, if the tool is used for different ap-
plications, with different accessories or poorly
maintained, the vibration emission may differ. This
may significantly decrease the exposure level over
the total working period.
CAUTION! The noise produced during work
may damage your hearing.
Wear ear protection!
The hand-guided long-neck grinder Gex is intended
for the grinding and polishing of ceilings, walls and
floors, indoors and outdoors. It is suitable for con-
crete and stone grinding, for removing concrete
burrs, coatings, loose render as well as paint and
adhesive residue, for levelling, roughening of
screed and evening out butt joints. It may only be
used for dry grinding. For grinding work, the unit
may only be operated in combination with a suita-
ble vacuum cleaner. The Gex is only intended for
use with ROKAMAT metal and fibre discs.
Only sufficiently qualified and trained personnel is
allowed to work with the grinder.
The intended use includes the observance of the
operating instructions, in particular the safety in-
structions and the observance of generally recog-
nized accident prevention regulations.
Grinder and polisher Gex Item No. 85000
Rated voltage
230 V AC
Frequency
50 Hz
Power
1500 W
No-load speed
2580-9140 min-1
4. Technical Specifications
3. Intended Use

Gex en English
5
Maximum tool diameter
150 mm
Driver disc
M12x1,5 / 10 mm
Tool holder weight
2,9 kg
Total weight
6,8 kg
Max. tool thickness
4,0 mm
Dimension compact
(LxHxW)
114x20x42 cm
Cable length
5,0 m
Safety class
I /
A-weighted sound pressure level (see cap. 2
“Emission levels“):
Sound pressure level LpA
90 dB(A)
Sound power level LWA
101 dB(A)
Uncertainty KpA, KWA
3,0 dB
Total vibration value (see cap. 2 “Emission lev-
els“):
Emmission value ah(Sanding
operations)
< 2,5 m/s2
Emmission value ah(Concrete)
4,2 m/s2
Uncertainty K
1,5 m/s2
The specified illustrations can be found in fig. [1]
on page 2 of the operating instructions.
1-1 Grinding head
1-2 Lever
1-3 Handle (Gripping surface)
1-4 Clamping screw
1-5 Intake socket
1-6 Slide switch
1-7 Belt
1-8 Mains cable
1-9 Motor (with gripping surface)
1-10 Flexible drive shaft
1-11 Handle
1-12 Fork
1-13 Slide ring
Unauthorised voltage or frequency!
Risk of accident!
The mains voltage and the frequency of the
power source must correspond with the specifi-
cations on the machine's name plate.
Connecting the dust extraction system [2]
Push the suction hose [2-6] onto the intake socket
[1-5]. Check for correct fit! If necessary, use a suit-
able adapter. See also chapter 7.
Motor mounting
The motor [1-9] is not allowed to be placed on the
floor during operation, but must be hooked in the
carabiner of the provided belt [1-7] (resp. shoulder
belt).
Switching the electric power tool on and off
[3]
Switching on: Push the sliding switch [1-6] for-
ward. For continuous activation, now tilt
downwards until it engages.
Switching off: Press the rear end of the slide
switch [1-6] and release it.
Risk of injury, electric shock!
Always pull the mains plug out of the socket be-
fore performing any type of work on the ma-
chine!
Attaching, changing or removing the dia-
mond/ PCD/ hard metal rasping disc [4]
- Put the support flange [4-4] on the grinding spin-
dle [4-6] so that the collar (square) points down-
wards.
- Place the grinding disc [4-3] on the grinding spin-
dle.
- Put the clamping flange [4-2] on the grinding
spindle with the undercut facing upwards. Fix the
grinding spindle to the support flange collar us-
ing the wrench [4-5], then securely tighten the
clamping flange clockwise using the face wrench
[4-1].
- Removing in reverse order.
Attaching, changing or removing the sup-
porting plate [5]
- Remove the clamping flange and grinding disc
(see above).
- Fix the grinding spindle to the support flange col-
lar using the wrench, then place the supporting
plate [5-2] centrally on the grinding spindle and
tighten by hand by turning clockwise.
- Removing in reverse order.
Attaching or changing the abrasive with
velcro [5]
- Remove the (worn) abrasive [5-1] from the sup-
porting plate.
- Place the abrasive in the center of the supporting
plates and press on.
- Conduct a test run to check that the abrasives are
attached in the center.
Adjusting the speed [6]
Set the recommended speed at the thumbwheel
[6-1]. (small number = low speed; large number =
high speed).
When working with PCD grinding disc, ABRA-
FILM/ polishing/ emery discs: set low speed
(level 1-3).
Suction flow regulation [2]
Turn the sleeve [2-5] to regulate the suction flow.
Completely open = min. suction flow
Completely closed = max. suction flow.
Handle [2]
- Push in the bolts [2-1] on the bow handle [2-2].
- Move bow handle to desired position.
- Loosen bolts and allow to engage.
Telescopic tube [2]
- Open the clamping screw [2-3].
- Move the telescopic tube [2-4] to the desired po-
sition.
- Lock the clamping screw.
Angle adjustment [8]
- Pull lever [8-1].
- Set the desired angle.
- Release lever and allow bolt to engage.
The angle adjustment allows for ergonomic work.
It should also be ensured that the abrasive always
lies parallel on the surface to be worked on.
Work on ceiling and floor: It should also be en-
sured that the abrasive always lies parallel on the
surface to be worked on.
Work on wall: Angle the fork. Hold the grinder al-
most perpendicular to the work surface.
These recommendations may vary slightly de-
pending on body size.
Grinding head/Grinding close to edges
The slide ring [1-13] retains the dust until it is ex-
tracted by the dust extractor. As the slide ring pro-
jects above the surface of the sanding plate, it is the
slide ring which comes into contact with the work
surface first. As a result, the grinding head is
brought parallel to the work surface before the
grinding tool comes into contact with the work sur-
face. This avoids a sickle-shaped depression
caused by the edge of the sanding or diamond
grinding disc.
If the brush ring is damaged or shows excessive
wear, it should be replaced (see chapter 9).
Risk of injury!
Never work without a slide ring!
Do not turn the slide ring by hand while the ma-
chine is in operation!
Before switching on the power tool: Unpack
power tool and accessories and check that no
parts are missing or damaged.
6. Commissioning
7. Instructions for Use
5. Device Components
WARNING!
WARNING!
ADVICE!
ADVICE!
CAUTION!
WARNING!

Gex en English
6
Dust extraction
Health hazard posed by dust!
Always work with an extractor. Comply with na-
tional regulations. When using the long-neck
grinder, connect a Class M dust extractor. Wear
a dust mask!
The dust extraction system offered on our website
is adapted to the quantity of dust generated and
permanently ensure the necessary suction power.
Always use an antistatic suction hose! This
helps reduce the electrostatic charge.
1. Attach grinding tool.
2. Connect dust extraction system.
3. Attach motor to (shoulder) belt.
4. Insert mains plug.
5. Set required speed.
6. Switch on dust extraction system.
7. Hold the long-neck grinder with both hands at
the gripping surfaces. This provides the best
possible combination of range and leverage for
the application.
8. Switch on the device.
9. Press the long-neck grinder gently against the
work surface (the pressure should be just
enough to ensure that the grinding head is
flush with the work surface).
10. Increase the pressure to bring the sanding
sheet into contact with the work surface. In do-
ing so, swing the long neck grinder in overlap-
ping movements to smooth the surface to the
required fineness.
After finishing work
Once you have finished the grinding work, set
the power tool down.
Do not set the power tool down with the grind-
ing head facing downwards –always lay it on
the floor so that it is on its side! Otherwise the
supporting plate could be deformed.
Risk of injury, electric shock!
Always disconnect the mains plug from the
socket before performing maintenance work on
the machine!
- Repairs may be carried out by an authorized cus-
tomer service center only.
- Repairs to electrical tools must be carried out by
qualified electricians only!
Check the plug and the cable regularly and should
either become damaged, in order to avoid a hazard,
have them replaced by an authorized customer
service center.
During the warranty period do not loosen the
screws on the housing. Non-compliance will deem
the guarantee obligations of the manufacturer null
and void.
Remove dust from the motor regularly
It is possible that particles deposit inside the power
tool during operation. This impairs the cooling of
the power tool. Conductive build-up can impair the
protective insulation of the power tool and cause
electrical hazards.
The power tool should be cleaned regularly, often
and thoroughly through all front and rear air vents
using a vacuum cleaner or by blowing in dry air.
Prior to this operation, separate the power tool
from the power source and wear protective glasses
and dust mask.
Replacement of the flexible drive shaft [7]
Disassembling: On the motor side, press in the
press button [7-1] in the borehole [7-2] with a tool
(e.g. screwdriver) and pull out the protective hose
[7-3]. Now the shaft core [7-4] can be replaced.
To replace the protective hose [7-3], it must also be
loosened on the side of the tool holder. To do this,
press in the press button [7-5] in the borehole [7-6]
with a tool (e.g. screwdriver) and pull out the pro-
tective hose [7-3].
Mounting: In reverse order. Make sure that the
shaft core [7-4] is threaded into the square in each
case.
Exchanging the slide ring
First, the grinding tool must be removed (see chap.
7). The slide ring is engaged in the grinding head at
several points. In order to remove the slide ring, it
must be loosened at these points by levering. En-
gage the new slide ring on the corresponding one.
Then, the correct position and the fixing must be
checked.
Check all wearing parts once a month.
Handling and storage
Operation
Temperature range: +5° C to +50° C
Humidity: ≤ 85 %, non-condensing
Climate: dry
Transport and storage
Temperature range: -5° C to +55° C
Humidity: 0 % to 70 %
Climate: dry, roofed, dew protected
Keep out of reach of children.
Other accessories, in particular insertion tools, can
be found in the manufacturer’s catalogues. Ex-
ploded drawings and spare-part lists can be found
on our homepage: www.rokamat.com.
Use only original ROKAMAT spare parts and work
tools!
The generated grinding dust may contain harmful
substances. Dispose appropriately.
Observe national regulations on environmentally
compatible disposal and on the recycling of dis-
used machines, packaging and accessories.
For Great Britain and EU countries: Never
dispose of power tools in your household
waste! In accordance with WEEE relating
for electrical and electronic waste and
implementation of national law, used elec-
trical tools must be collected separately
and disposed of in an environmentally
friendly manner at recycling centers.
Separate the motor from the rest of the
machine before disposal. Make used tools
unusable by removing the mains cable.
Please ask your dealer about disposal options!
It is expressly declared that the grinder and pol-
isher listed on the first page under 1) from the serial
number indicated onwards complies with all rele-
vant provisions of the directives or regulations
listed in 2) and that the harmonized standards
listed in 3) have been applied. The technical docu-
mentation is available from the authorized docu-
mentation agent named in 4).
The two boreholes for the push button at the
drive shaft serve as length adjustment between
shaft core and protective hose. The shaft core
should be freely movable in length and must not
get compressed!
9. Maintenance and Care
WARNING!
WARNING!
CAUTION!
ADVICE!
8. Working with the Power Tool
10. Spare Parts and Accessories
CAUTION!
ADVICE!
11. Environmental Protection
ADVICE!
12. Declaration of Conformity

Gex en English
7
Problem
Possible causes
Remedy
Motor runs, but the sup-
porting plate does not ro-
tate.
Shaft core broken.
Exchange shaft core.
The electronic signal dis-
play [6-1] lights up and
the load speed decreases.
There is too much load on the
machine.
Run the machine in idling until the
electronics signal indicator switches
off.
The machine does not
start. The electronic sig-
nal display [6-1] flashes.
The restart protection is active. If
the mains plug is inserted with
the machine switched on, or if the
power supply is restored follow-
ing an interruption, the machine
does not start up.
Switch the machine off and on again.
Motor power fluctuates.
Carbon brushes worn.
Replace carbon brushes.
Gex not working.
Cable break.
Replace mains plug.
Interruption to power supply.
Switch the power tool off and on
again.
Gex does not run
smoothly over the sur-
face.
Hard material or hard grounds.
Adjust speed.
Reduce suction pressure: open suc-
tion flow regulator (if available).
Deformed grinding plate.
Use a new grinding plate.
Excessive material re-
moved from workpiece.
Speed to high.
Reduce the speed.
Grit on abrasives too coarse.
Select a finer grit.
Surface quality not per-
fect.
Incorrect or worn tool discs.
Select correct tool discs and check
for good condition.
Power tool running when set
down on the surface (groove for-
mation).
Place the power tool in position and
then switch it on.
Always use a slide ring when working
on the surface.
Grinding marks on the
surface.
Grinding plate is placed down on
the surface at an angle.
Place the grinding plate down so that
it is level.
Electrostatic charge.
Machine not grounded.
Use antistatic suction hose with suit-
able vacuum cleaner.
Extraction power is insuf-
ficient.
Filter element on the dust extrac-
tion system is blocked/clogged.
Clean the filter element regularly.
Disposal bag inserted incorrectly.
Installing the disposal bag correctly.
The suction power on the dust
extraction system is too low.
Adjust the suction power to a higher
setting.
Speed too high.
Reduce speed.
Suction hose blocked or kinked.
Remove blockage and straighten
hose.
Disposal bag full.
Dispose of the bag.
Slide ring damaged.
Replace slide ring.
13. Troubleshooting
If problems other than those listed occur, please contact your ROKAMAT service workshop or your local
specialist.