Micronfilter KALAMIT Series User manual

KALAMIT series
USE AND MAINTENANCE MANUAL

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CONTENTS
1.0 INTRODUCTION ........................................................................................................... 1
2.0 FUNCTIONAL DESCRIPTION .................................................................................... 2
3.0 HANDLING AND TRANSPORTATION....................................................................... 3
3.1 GENERAL PRECAUTIONS ...................................................................................... 3
3.2 TRANSPORTATION METHOD ............................................................................... 4
3.3 HANDLING PACKAGED EQUIPMENT .................................................................. 5
3.4 REMOVING FROM THE PACKAGING AND HANDLING .................................... 5
3.5 STORAGE .................................................................................................................. 6
4.0 INSTALLATION ............................................................................................................ 7
4.1 POSITIONING THE CLEANER ................................................................................ 7
4.2 CONNECTION TO THE WATER MAINS................................................................ 7
4.3 CONNECTION TO THE POWER MAINS ............................................................... 7
4.4 WIRING DIAGRAM ................................................................................................... 8
5.0 PRELIMINARY OPERATIONS AND USE .................................................................. 8
5.1 VERIFYING MOTOR ROTATION ............................................................................ 8
5.2 CHUTE REGULATION ............................................................................................. 9
5.3 START UP ................................................................................................................. 9
5.4 STOP .......................................................................................................................... 9
5.5 PUTTING THE MACHINE TO REST ...................................................................... 9
6.0 MAIN WARNINGS REGARDING MACHINE USE ................................................... 10
6.1 METHODS OF USE AND LIMITATIONS ............................................................. 12
6.2 RESIDUAL RISKS INVOLVING THE MACHINE ................................................. 12
6.3 RoHS European Directives ................................................................................... 14
7.0 SCHEDULED MAINTENANCE AND INSPECTIONS ............................................. 14
7.1 REPLACING THE MOTOR .................................................................................... 15
8.0 MARK AND CERTIFICATIONS ................................................................................. 15
9.0 SYMBOLS AND CAUTION SIGNS ........................................................................... 16
10.0 TECHNICAL INFORMATION ON THE FILTER .................................................... 17
10.1 DIMENSIONS ........................................................................................................ 17
10.2 TECHNICAL TABLE ............................................................................................. 18
10.3 LIST OF THE MAIN PARTS OF THE CLEANER .............................................. 18
11.0 KALAMIT MAGNETIC FILTER ............................................................................... 19
12.0 MACHINE DEMOLITION ......................................................................................... 20
1.0 INTRODUCTION

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This manual contains all the information necessary for the proper use of the machine. The
user is kindly requested to take careful heed of the warnings and to read it thoroughly. It is
also requested that this manual be conserved in a suitable place so that it remains legible
and unaltered. The contents of this manual may be changed without notice for the purpose
of including variations or improvements to the units already shipped.
2.0 FUNCTIONAL DESCRIPTION
The Kalamit series of magnetic cleaners for cutting fluids is indicated for all machine tools
used to work metal, to separate magnetic particles from emulsions and whole oils with
maximum viscosity of 20° cSt at 40° C.
The cleaner works in a simple and effective
manner, clearly illustrated in the diagram.
The soiled fluid is conveyed by gravity or
pressure to the inside of the cleaner. The
rotating magnets (1) retain the magnetic
particles, which are then removed by a comb
blade (2) that sends the mud to the
adjustable chute (3). The cleaned fluid flows
through the containment tank (if requested)
and then, according to the use, is relaunched
by the machine tool via an electric pump (if
requested). The magnetic disk cleaner does
not use disposable filters. The recovered mud is easily disposed of as differentiated waste.
The Kalamit series of magnetic cleaners for cutting fluids is indicated for all machine tools
used to work metal, to separate metal particles from emulsions and whole oils with
maximum viscosity of 20° cSt at 40° C, for a capacity ranging from 50 to 700 l/min. The
cleaners are all made of sturdy zinc-coated sheet metal, bent and welded by a fully
automated process and finished with powder coating. They consist of a support frame where
the group of permanent magnets are installed, connected to a motor reducer through a
command shaft. The groups are factory-supplied with a mud-scraping blade and a chute with
adjustable inclination. There are also covers and flow-breaker pre-chambers, containment
tanks for the filtered fluid, and many other optionals. The soiled fluid is conveyed by gravity
or pressure to the inside of the cleaner. The rotating magnets retain the magnetic particles,
which are then removed by a comb blade that sends the mud to the adjustable chute. The
filtered fluid flows into the containment tank. The magnetic disk cleaner does not use
disposable filters. The recovered mud is easily disposed of as differentiated waste.

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3.0 HANDLING AND TRANSPORTATION
3.1 GENERAL PRECAUTIONS
The product must be shipped via covered or sheeted vehicles. User is responsible for
providing the necessary means to hoist and handle the parts.
IT IS ADVISABLE TO CONTACT THE TRANSPORTATION COMPANY TO OBTAIN
INFORMATION ON TRANSPORTATION METHODS AND ANY REQUESTS YOU
MAY HAVE.
Hoisting, handling, transporting and unpacking operations of the single units of the machine
must only be entrusted to workers experienced in this type of operation.
Operators should also be:
• Instructed on the nature of the loads to be hoisted, the operations to be carried out
and the procedures described in the Use and Maintenance Manual;
• Authorised;
• Assisted by manufacturer’s employees (or employees of an authorised assistance
centre) well familiarised with the machine and with its Use and Maintenance Manual;
• Sure to carry out the operations fully following the procedure indicated in the manual
itself.
DURING THE OPERATIONS, OPERATORS INVOLVED MUST WEAR
PERSONAL PROTECTION EQUIPMENT, HARD HATS, GLOVES, PROTECTIVE
SHOES, WORK OVERALLS AND ANY OTHER PIECE OF EQUIPMENT
REQUESTED BY THE LEGISLATION IN FORCE, ACCORDING TO THE NATURE
OF THE OPERATION ITSELF.
OPERATORS MUST ALWAYS FOLLOW THE INSTRUCTIONS AND
PROHIBITIONS DESCRIBED BY THE CURRENT LEGISLATION IN FORCE
REGARDING HOISTING AND TRANSPORTATION OPERATIONS.
Among others, the following general rules of behaviour should be respected:
• Move away from loads prior to hoisting and lowering;
• Never stand beneath suspended loads;
• Prevent access of anyone not directly involved in the operation;
• During the operations, keep a safe distance from the hoisted weight.

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The product must be shipped via covered or sheeted vehicles. User is responsible for
providing the necessary means to hoist and handle the parts.
FAILING TO FOLLOW THE PRECAUTIONS INDICATED ABOVE MAY LEAD TO
SERIOUS ACCIDENTS WITH CONSEQUENT DAMAGE TO THE MACHINES AND
INJURY OF THE OPERATORS.
When the machine is received, the final user is in charge of checking the packaging list
containing the details of the load, as well as the integrity of the materials and the parts,
immediately reporting to the Manufacturer should any damage be identified.
The User is also in charge of providing proper power feed according to its technical features.
ONCE ARRIVED AT ITS DESTINATION, THE MACHINE MUST BE HANDLED
WITH EXTREME CARE.
3.2 TRANSPORTATION METHOD
TRANSPORTATION IN WOOD CRATES
The machine is divided in parts and is wrapped in thermoplastic
material to ensure the protection of the parts. It comes
packaged in a wooden crate or cage (according to its destination
or to contract terms).
When the machine arrives, make sure its single units have not
been damaged during transportation and that all parts described in the shipping list are
present, including the Use and Maintenance Manual, if included in the packaging.
THE MEANS USED TO HANDLE THE MACHINE MUST BE SUITABLE FOR
THE HOISTING OF ITS SINGLE PARTS.
THIS OPERATION MUST BE CARRIED OUT BY SUITABLY TRAINED
PERSONNEL (SLINGERS, CRANE OPERATORS, FORKLIFT OPERATORS
ETC). THERE MUST BE AN OPERATOR IN CHARGE OF SIGNALLING, AS
THE SIZE OF THE UNITS BEING HANDLED MAY REDUCE VISIBILITY FROM
THE CRANE OR FORKLIFT.

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TRASPORTATION ON PALLET
This transportation method includes anchoring the
machine or its parts to a pallet using straps and then
covering the parts with thermoplastic material, to
protect them during transportation.
ATTENTION! DO NOT LOAD UNCOVERED LORRIES WITH PALLETS
CONTAINING UNPROTECTED PARTS AND ALWAYS CHECK THE POINT
WHERE THE FORKS ENTER BENEATH THE PALLET.
3.3 HANDLING PACKAGED EQUIPMENT
HANDLING AND TRANSPORTING EQUIPMENT MUST BE IN CHARGE OF
SUITABLY TRAINED PERSONNEL.
3.4 REMOVING FROM THE PACKAGING AND HANDLING
1. Remove the polyethylene protection.
2. Remove any wooden blocks nailed to the base of the pallet, from the cage or the crate,
and strappings, if present.
3. Hoist the machine using the 2 lifting points outside the collection tank, as indicated in the
figure below.
USE ONLY THE LIFTING POINTS INDICATED IN THE FIGURE TO LIFT AND
HANDLE THE MACHINE.
LIFTING POINTS

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3.5 STORAGE
The machine can be stored when it is received, taking the following conditions into account:
• The packaging should be intact when the machine is received. If this is not the case,
check the integrity of the machine and replace the packaging;
• Make sure the storage place is a closed place;
• Cover the units with plastic tarp to protect the machine from dust, humidity and any
other elements that may jeopardise proper operation once the machine is delivered;
• Make sure the surface on which the machine is set to rest can safely support it and is
completely flat.
NO
YES

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4.0 INSTALLATION
THE CLEANER MUST BE INSTALLED BY SPECIALISED PERSONNEL
The place where the cleaner is to be installed must be spacious enough to make it possible to
access the machine comfortably and safely, for all routine or extraordinary maintenance
operations.
4.1 POSITIONING THE CLEANER
Make sure the place where the cleaner is to be installed is perfectly flat. Lift the cleaner using
the hooks and place it in its seat, in the tank.
4.2 CONNECTION TO THE WATER MAINS
Use a hose connection (not included in the standard supply) to
connect a flexible tube to the entrance of the cleaner (see figure on
the side). Alternatively, this connection can be made using
hydraulic components (tubes, elbows etc), suitably sized.
4.3 CONNECTION TO THE POWER MAINS
ALL ELECTRIC CONNECTIONS FOR THE CLEANER MUST ONLY BE CARRIED
OUT BY SKILLED ELECTRICIANS, WITH THE POWER CUT OFF FROM THE
EQUIPMENT.
PRIOR TO MAKING THE ELECTRIC CONNECTIONS FOR THE CLEANER, CHECK
THE WIRING DIAGRAM ATTACHED TO THIS MANUAL.
Make sure the connection voltage is equal to the voltage of the power grid (check the plate
attached to the terminal of the motor reducer).
Check the information on the plate on the cleaner (verify the electric characteristics in the
table below) in order to choose the proper connection materials (sections, cables etc).
Cleaner Kalamit
75
Kalamit
150
Kalamit
250
Kalamit
350
Kalamit
500
Voltage
230/400 V
230/400V
230/400V
230/400V
230/400V
Frequency 50 HZ 50 HZ 50 HZ 50 HZ 50 HZ
Total rated power
0.12 kW 0.12kW 0.12kW 0.12kW 0.12kW
Current at full power 0.62A 0.62A 0.62A 0.62A 0.62A
Motor reducer
Double
Double
Double
Double
Double
Number of poles 6 6 6 6 6
Reduction ratio
1/600
1/600
1/600
1/600
1/600

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4.4 WIRING DIAGRAM
When the lid of the motor reducer is removed (fig. 1), it is possible to directly access the
terminal board, where it is possible to create a star/triangle connection as indicated in fig. 2
5.0 PRELIMINARY OPERATIONS AND USE
5.1 VERIFYING MOTOR ROTATION
1. Turn the power switch to ON.
2. Press the “I” button of all circuit breakers (if present) inside the electric panel (where
provided).
3. Close the door of the electric panel and turn the door locking switch to the “I” position.
4. Make sure the rotation direction of the motor corresponds to the direction indicated by
the arrows on the motors.
If this is not the case:
1. Turn the power switch to OFF.
2. Turn the door locking switch in the electric panel to the “O” position.
3. Open the electric panel of the cleaner.
4. Invert two of the three phases in the terminal board of the desired utility.
5. Close the electric panel again.
6. Turn the power switch to ON.
7. Turn the door locking switch in the electric panel to the “I” position.
8. Make sure the rotation direction of the motor corresponds to the direction indicated by
the arrows on the motors.

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5.2 CHUTE REGULATION
It is possible to adjust the inclination of the cleaner chute (fig. 1) by loosening the four M6
fixing nuts on the series of chute holes (fig. 2). In general, the highest position of the chute
corresponds to drier mud, but it is advisable to try different regulations until you find the
proper balance between optimal unloading and desired humidity of the mud.
5.3 START UP
Turn the power switch to ON.
Turn the door locking switch in the electric panel to the “I” position.
5.4 STOP
Turn the door locking switch in the electric panel to the “O” position.
5.5 PUTTING THE MACHINE TO REST
If the machine is expected to remain inactive for a long time, it is advisable to:
Run the cleaner before stopping it until all working detritus is discharged and then empty the
tank (if present) of cooling fluid and clean the tank. This will prevent the fluid to degrade due
to the proliferation of bacteria.
WHEN THE MUD IS LEFT FOR LONG INSIDE THE MAGNETIC SEPARATOR, IT DRIES TOO MUCH
AND “TURNS INTO CEMENT”, IN PARTICULAR WHEN THE RESIDUES ARE VERY FINE (SUCH AS
GRINDING MUD). THIS MAY DAMAGE DISKS AND MOTOR REDUCER WHEN THE EQUIPMENT IS
TURNED ON AGAIN.

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6.0 MAIN WARNINGS REGARDING MACHINE USE
Personnel/Operators are forbidden from removing the protections installed
on the machine/equipment.
It is forbidden to use the machine, which has an electric motor, in the
presence of natural gas, benzene vapours or other flammable vapours.
It is forbidden to approach, trespass or remain in the area where this symbol
is displayed.
It is forbidden to operate this piece of equipment if you are not a qualified
operator.
It is forbidden to carry out maintenance operations in the presence of moving
equipment.
Persons with heart conditions are absolutely forbidden from entering when
this sign is displayed.

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Indicates danger with risk of accident, including death, for the Operator. Pay
maximum attention to the text indicated by this symbol.
Indicates the presence of magnetic or electromagnetic fields at a close
distance, which may compromise the good functioning of the control panel.
Indicates a danger due to the presence of moving parts.
The Operator must pay maximum attention to the signs and the areas where
this symbol is displayed, and always respect the safety distances indicated.
Indicates a danger due to the presence of submerged moving parts. The
Operator must pay maximum attention to the signs and the areas where this
symbol is displayed, and always respect the safety distances indicated.
Indicates a danger with risk of having one’s limbs dragged due to the
presence of moving belts or chains. Pay maximum attention to the signs and
the areas where this symbol is displayed.
Indicates a danger with risk of having one’s limbs caught due to the presence
of moving parts. Pay maximum attention to the signs and the areas where this
symbol is displayed.
Indicates a danger with risk of amputation due to the presence of sharp
moving parts. Pay maximum attention to the signs and the areas where this
symbol is displayed.
Indicates a danger with risk of crushing due to the presence of moving parts.
Pay maximum attention to the signs and the areas where this symbol is
displayed.
Indicates a danger with risk of electric shock due to the presence of live parts.
Pay maximum attention to the signs and the areas where this symbol is
displayed.
Indicates a danger with risk of burns due to the presence of high
temperatures. Pay maximum attention to the signs and the areas where this
symbol is displayed.

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6.1 METHODS OF USE AND LIMITATIONS
The Kalamit cleaners were devised for the filtration of cooling and lubricating fluids with
maximum viscosity of 20 cSt at 40° C.
THE CLEANERS WERE NOT DEVISED TO CLEAN FLUIDS DIFFERENT THAN
WHOLE OILS OR EMULSIFIERS
THE CLEANERS WERE NOT DEVISED TO CLEAN FLUIDS CONTAINING
CORROSIVE (ACID OR BASIC) SUBSTANCES, OR POTENTIALLY EXPLOSIVE
SUBSTANCES.
THE CLEANERS WERE NOT DEVISED TO BE USED IN POTENTIALLY
EXPLOSIVE PLACES
THE COMPANY CANNOT BE HELD LIABLE FOR DAMAGE TO PEOPLE OR
THINGS CAUSED BY IMPROPRE USE OR BY VARIATIONS OF DESIGN
PARAMETERS
Note: Any use that compromises the function, integrity, safety of the machine's structure, of
either its mechanical or electrical equipment or any component used for control or
connection is considered improper. The Micronfilter s.r.l. technical service is always available
for any additional information on the use of the product.
6.2 RESIDUAL RISKS INVOLVING THE MACHINE
Considerations regarding safety conditions and residual risks.
THIS PIECE OF EQUIPMENT WAS DESIGNED WITH MAXIMUM POSSIBLE
LIMITATION OF SOURCES OR SITUATIONS OF DANGER. SUCH
SITUATIONS CAN ONLY HAPPEN WHEN THE INSTALLATION
INSTRUCTIONS ARE NOT FOLLOWED OR WHEN THE PRODUCT IS USED
IMPROPERLY.
DANGERS DERIVING FROM CONTACT BETWEEN THE PRODUCT AND OBJECTS
OR PEOPLE
The rotary movement of the magnetic drum may be dangerous. This movement can cause
serious injury to any Operator who comes into contact with it. The protections ensure enough
safety in normal working conditions. It is obligatory to pay maximum attention.

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SAFETY RULES FOR ELECTRIC EQUIPMENT
The causes of electric shocks are well known and it is not difficult to prevent them, as long as
attention is constant. To reduce the number of electric accidents, the personnel involved
must be informed on the potential risks and instructed on how to use safety procedures.
DUTIES OF THE PEOPLE IN CHARGE
The people in charge must be informed of the potential risks existent in the system and
control the personnel working with electric equipment. This control action consists of
identifying possible risk conditions and investigating problems found by the personnel during
maintenance interventions. Every defective part must be repaired or replaced immediately.
The person in charge must insist on the use of safety measures, without tolerating or
accepting deviations, as these may cause injury to people and damage to the machinery.
Pos. Area identification Risk Symbol
Magnetic drum
• Limb crushing
• Limb dragging
• Burns to the limbs
Motorisation • Electric shocks
• Burns to the limbs
Should one or more protections be absent
Type of risk Consequences to people Risk conditions
• Introducing limbs in
point I
• Introducing limbs in
point II
Type of consequences:
• Shearing
• Crushing
• Machine in function
• Failure to respect safety
regulations
• Non-instructed personnel
• Voluntariness
 Absence of PPE

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6.3 RoHS European Directives
Micronfilter s.r.l. hereby declares that its products are expressly manufactured according to
the requests of directive 2011/65/EU regarding restrictions of use of potentially dangerous
materials, called RoHS, with particular reference to the limitation of the following dangerous
substances:
Lead (Pb) - Mercury (Hg) - Cadmium (Cd) - Hexavalent chromium (Cr VI) - Polybrominated
biphenyls (PBBs) - Polybrominated phenyl ethers (PBDEs).
As for the conformity of each single part, it is not technically possible to analyse each in turn.
Micronfilter s.r.l. therefore trusts the declaration of conformity issued by each single supplier.
7.0 SCHEDULED MAINTENANCE AND INSPECTIONS
DO NOT PERFORM ANY MAINTENANCE PROCEDURES WITH THE FILTER RUNNING
OR CONNECTED TO ANY ELECTRICAL POWER SOURCE. PADLOCK THE CONTROLS
DURING MAINTENANCE TO AVOID UNDESIRED START UPS.
NEVER USE ANY INFLAMMABLE FLUIDS WHEN CLEANING THE FILTERS.
SCHEDULED MAINTENANCE PROCEDURES MUST BE CARRIED OUT BY SKILLED
PERSONNEL FAMILIAR WITH THE PROCEDURES AND PRECAUTIONS TO BE
ADOPTED.
1. Clean the scraping blade of the magnetic separator to remove mud residues and use clean
cooling fluid to wash the disk area and the mud chute. Working residues that remain too long
within the scraping blade may solidify and block the disks.
2. At regular intervals, it is necessary to check the regulation of the scraping blade. In
general, the distance between the blade combs and the
disks must be somewhere between 0.2 and 0.5 mm. As the
blades and disks get worn, this distance increases,
therefore reducing the efficiency of the equipment. When
this happens, replace the scraping blade.
3. Keep the cooling flaps of the motor reducer clean. The
fan cover for the motor must always be kept clear from
occlusions, to make sure the cooling process is effective.
4. The cleaners are equipped with self-aligning supports for the shaft. Once a year, the
bearings must be greased using the nozzle provided (see figure).

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7.1 REPLACING THE MOTOR
Motor replacing operations on the reducer:
THE ELECTRIC MOTORS MUST ONLY BE REPLACED BY EXPERIENCED AND
QUALIFIED PERSONNEL, IN ACCORDANCE WITH THE REGULATIONS IN FORCE.
• Place the door-blocking switch on the electric panel of the
system on O;
• Disconnect the cables involved (1);
• Loosen the screws that fix the motor (2);
• Slide the motor out (3);
• Insert the new motor;
• Lock the screws that fix the motor;
• Reconnect the cables involved;
• Clean the working area;
• Resume the work cycle.
8.0 MARK AND CERTIFICATIONS
The Kalamit filters were examined in accordance with the EEC Machine Directive 2006/42
and its modifications, the EMC 2004-108 regarding Electromagnetic Compatibility. Its
certification is made known by the placing of the CE mark on the machine and by the
declaration of conformity that is annexed to this manual.
N.B.
The EC mark and the declaration of conformity are issued exclusively for machines complete
with each single part (filter frame with relative protections, tank, pump and cabled electric
board). The filter is to be considered part of a more complex machine, in which it is destined
to be incorporated. For this reason it is not complete with all safety devices requested by
directive EC 2006/42 and its modifications. It is therefore FORBIDDEN to start the “machine
part” supplied before the machine in which it will be incorporated, and of which it will
become a part, has been identified and declared to be in conformity to directive 2006/42 and
its modifications.

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9.0 SYMBOLS AND CAUTION SIGNS
These symbols , together with the relative warning messages, indicate the
potential for risk that comes from the non-compliance with the requirements to which they
have been linked, as specified below.
Sticker indicating that on the control panel there are live parts with 400V
Sticker indicating the anchorage points to hoist the filter
Sticker indicating the rotation direction of the motor.
EC label (only for complete filters) indicating
series, model and serial number of the product
supplied, in addition to significant information
on the technical features and performance
figures of the equipment.

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10.0 TECHNICAL INFORMATION ON THE FILTER
10.1 DIMENSIONS
A B C D
KALAMIT 75
436
180
130
103
KALAMIT150 556 300 250 103
KALAMIT 250
716
460
410
103
KALAMIT 350 916 660 610 103
KALAMIT 500
1196
940
890
103
Note: Upon request, Kalamit filters can be supplied with plates for fluid entrance with 1 or
more connections and with different diameters.

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10.2 TECHNICAL TABLE
Cleaner Capacity in
emulsion
l/min
Capacity in
whole oil
l/min
Total installed
power
kW
Acoustic
pressure
dB (A)
KALAMIT 75 75 37.5 012 <70
KALAMIT150 150 75 012 <70
KALAMIT 250 250 125 012 <70
KALAMIT 350 350 175 012 <70
KALAMIT 500 500 250 012 <70
10.3 LIST OF THE MAIN PARTS OF THE CLEANER
POS. DESCRIPTION
1 Frame
2 Chute with adjustable
inclination
3 Support
4 Protection with
jet-breaking blade
5 Motor reducer with sealing
disk
6 Gasket
7 Comb
8 Magnetic disk and spacers
unit

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11.0 KALAMIT MAGNETIC FILTER
SYMPTOM CAUSE SOLUTION
Motor does not work • No power
• Blown motor
• Check power current
• Check phase continuity
and any phase that may
have short-circuited
Reducer does not work • Blown motor
•
Switch between motor and
reducer is broken/absent
• Defective reducer
• Check the motor
• Disassembly and
inspection
• Disassembly and
inspection
Motor reducer transmission
failure
• Motorised shaft
connection switch
• Hardened muds or chips
• Disassembly and
inspection
• Disassembly and
inspection
Very noisy motor reducer • Bearings are worn
• Gears are worn/broken
• Disassemble and check
bearing replacement
• Disassemble and check
bearing replacement
Electric protections have
tripped
• Motor absorption is
excessive
• Motor temperature is high
• Check voltage/power
current and phases
•
Check for unexpected work
conditions
Magnetic drum does not turn • Motorised shaft
connection switch
• Hardened muds or chips
• Disassembly and
inspection
• Disassembly and
inspection
The combs do not discharge
the muds
• Combs are worn
• Material has hardened on
the combs
•
The material being worked
is not magnetic iron
• Replacement
• Disassembly and cleaning
• Test