Alfain PEGAS 41 PLASMA PFC User manual

ALFA IN a.s © www.alfain.eu PEGAS 41 PLASMA PFC manual EN 06
PLASMA CUTTING MACHINE
PEGAS 41 PLASMA PFC
OPERATING MANUAL

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CONTENT
1. INTRODUCTION ...................................................................................... 3
2. SAFETY INSTRUCTIONS AND WARNINGS ........................................... 4
3. CONDITIONS OF USE ............................................................................. 7
4. TECHNICAL DATA ................................................................................... 8
5. MAIN PARTS OF THE MACHINE .......................................................... 10
6. ACCESSORIES ..................................................................................... 11
7. GETTING STARTED .............................................................................. 16
8. CUTTING ............................................................................................... 18
9. MAINTENANCE ..................................................................................... 20
10. STATEMENT OF WARRANTY .............................................................. 22
11. DISPOSAL ............................................................................................. 23
12. WARRANTY LIST .................................................................................. 23

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1. INTRODUCTION
Congratulations on your new ALFA IN product. We are proud to have you as our
customer and will strive to provide you with the best service and reliability in the
industry.
This Operating Manual has been designed to instruct you on the correct use and
operation of your ALFA IN product. Your satisfaction with this product and its
safe operation is our ultimate concern. Therefore please take the time to read
the entire manual, especially the safety precautions. They will help you to avoid
potential hazards that may exist when working with this product.
Read and understand this entire manual and your employer’s safety practices
before installing, operating, or servicing the equipment. While the information
contained in this manual represents the manufacturer's best judgement, the
manufacturer assumes no liability for its use.
Machine PEGAS 41 PLASMA PFC is designed for cutting metal on the basis of
modern technology cutting material through a thin beam plasma gas.
PEGAS 41 PLASMA PFC is equipped by Power Factor Correction (PFC), which
allows operation on single phase voltage networks 110 V – 230 V.
PEGAS 41 PLASMA PFC is designed for high-quality cutting of materials up to
15 mm thick carbon steel (for more information, see instructions
below). Productive cutting of carbon steel can be to a thickness of 10 mm.
At lower demands on the quality of the cut can be cut through (separate) the
material thickness to 20 mm.
We reserve the law of adjustments and changes in case of printing errors,
change of technical paramaters, accessories etc. without previous notice. These
changes may not be reflected in the manuals for use in paper or electronic form.

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2. SAFETY INSTRUCTIONS AND WARNINGS
1. OPERATION AND MAINTENANCE OF PLASMA ARC EQUIPMENT CAN
BE DANGEROUS AND HAZARDOUS TO YOURHEALTH.
2. Plasma arc cutting produces intense electric and magnetic emissions that
may interfere with the proper function of cardiac pacemakers, hearing aids,
or other electronic health equipment. Persons who work near plasma arc
cutting applications should consult their medical health professional and
the manufacturer of the health equipment to determine whether a hazard
exists.
3. Once the packing has been opened, make sure that the machine is not
damaged. If in any doubt, call the service centre.
4. This equipment must only be used by qualified personnel.
5. During installation, any electric work must only be carried out by trained
personnel.
6. The machine must be used in a dry place with good ventilation.
7. Make sure that no metal dust can be drawn in by the fan inside the
machine, as this could cause damage to the electronic circuits.
8. It is prohibited to connect more than one INVERTER generator in series or
in parallel.
9. When installing the machine, follow the local regulations on safety.
10. The position of the machine must allow easy access by the operator
to the controls and connectors.
11. When the cutting machine is operating, all its covers and doors must
be closed and well fixed.
12. Do not expose the cutting machine to direct sunlight or to heavy rain.
This equipment conforms to protection rating IP23S.
13. The operator must wear gloves, clothes, shoes, and a helmet or a
welder’s helmet, which protect and are fire-resistant in order to protect him
against electric shock, flashes and sparks from cutting.
14. The operator must protect his eyes with safety visor or mask
designed for welding, fitted with standard safety filters. He should also be
aware that during plasma cutting ULTRAVIOLET RADIATION is emitted.
Therefore it is vital that his face is also protected from radiation. Ultraviolet
rays produce the same harmful effect as sun burning on unprotected skin.
15. The operator is obliged to warn anyone near the cutting area of the
risks that cutting involves and to arrange to provide adequate protection
equipment.
16. Keep all fumes and gases from the breathing area.
17. Keep your head out of the fume plume.
18. Use an air-supplied respirator if ventilation is not adequate to remove
all fumes and gases.
19. The kinds of fumes and gases from the plasma arc depend on the
kind of metal being used, coatings on the metal, and the different

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processes. You must be very careful when cutting or welding any metals
which may contain one or more of the following:
Antimony
Chromium
Mercury
Nickel Cobalt Arsenic
Barium Copper Selenium
Beryllium
Lead
Silver
Cadmium
Manganese
Vanadium
20. Always read the Material Safety Data Sheets (MSDS) that should be
supplied with the material you are using. These MSDSs will give you the
information regarding the kind and amount of fumes and gases that may
be dangerous to your health.
21. It is very important to arrange for sufficient ventilation, especially
when cutting in enclosed spaces. We suggest using suitable fume
extractors to prevent the risk of intoxication by fumes or gas generated by
the cutting process.
22. Noise can cause permanent hearing loss. Plasma arc processes can
cause noise levels to exceed safe limits. You must protect your ears from
loud noise to prevent permanent loss of hearing.
23. To protect your hearing from loud noise, wear protective ear plugs
and/or ear muffs. Protect others in the workplace.
24. Noise levels should be measured to be sure the decibels (sound) do
not exceed safe levels.
25. The operator must ensure all flammable materials are removed from
the work area to avoid any risk of fire.
26. The operator must NEVER cut containers that have previously
contained petrol, lubricants, gas or similar flammable materials, even if the
container has been empty for a considerable time. THERE IS A VERY
HIGH RISK OF EXPLOSION.
27. The operator must be aware of all the special regulations which he
needs to conform to when cutting in enclosed spaces with a high risk of
explosion.
28. To prevent electric shock, we strongly suggest the following rules:
a. Do not work in a damp or humid environment.
b. Do not use the machine if its cables are damaged in any way.
c. Make sure that the earthing system of the electric equipment is correctly
connected and operational.
d. The operator must be insulated from the metal components connected
to the return wire.
e. The earthing of the piece being worked could increase the risk of injury
to the operator.
29. EN 60974-1 Standard: Open-circuit voltage. During the operation of
the machine, the highest voltage, with which it is possible to come into
contact, is the open-circuit voltage between the clamps. In our generator
this voltage is 320V.

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30. The maximum open-circuit voltage of the plasma machines is
established by national and international standards (EN 60974-1)
depending on the type of current to be used, on its waveform and on the
hazards arising from the work place. These values are not applicable to
the strike currents and those for stabilisation of the arc that could be above
it.
31. The open-circuit voltage, for as many adjustments as possible, must
never exceed the values relating to the various cases shown in the
following table:
Case Working conditions Open-circuit voltage
1 Places with increased risk of
electric shock
DC current: 113V
peak value
AC current: 68V
peak value and
48V effective
2 Places without increased risk
of electric shock
DC current: 113V
peak value
AC current: 113V
peak value and
80V effective
3
Torches held mechanically
with increased protection for
the operator
DC current: 141V
peak value
AC current: 141V
peak value and
100V effective
4 Plasma cutting DC current: 500V
peak value
32. In case 1, the dc machines with rectifier must be built in such a way
that, in case of a fault developing in the rectifier (for example open circuit,
short circuit or lack of power), the permitted values cannot be exceeded.
The plasma cutting machines of this type can be marked with the symbol:
S
33. Before opening the machine switch off the machine and disconnect
it from the power socket.
34. Only personnel authorised by this company can carry out
maintenance on the machine.
PROTECTIVE UTTILITIES
1. Welding helmet with filter shade at least 10
2. Welding gloves
3. Welding apron and cloth
4. Welding boots
RISK OVERVIEW
1. Risk of electric shock
2. Ultraviolet light and light radiation
3. Risk of inhaling gas fumes and dust particles
4. Burns

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5. Noise
NOTE
1. It is forbidden to operate a machine with damaged insulation of the cutting
torch or supply cable.
2. Never operate the machine taken down or damaged covers.
3. It is forbidden to operate the machine in wet environments and outdoors in
rain or snow.
4. Ensure proper grounding clamping pliers, which also reduces the risk of
electric shock.
5. Use prescribed protective utilities, keep them dry.
6. Plasma arc cutting produces intense electric and magnetic emissions that
may interfere with the proper function of cardiac pacemakers, hearing aids,
or other electronic health equipment. Persons who work near plasma arc
cutting applications should consult their medical health professional and
the manufacturer of the health equipment to determine whether a hazard
exists.
7. Never aim the torch against the eyes, body or other person.
3. CONDITIONS OF USE
1. This equipment must only be used by qualified personnel.
2. During installation, any electric work must only be carried out by trained
personnel.
3. Device complies with IEC 61000-3-12.
4. Do not expose the plasma machine to direct sunlight or to rain or snow.
This equipment conforms to protection rating IP23S.
5. Working ambient temperature between -10 and +40 °C.
6. Relative humidity below 90% at +20 °C.
7. Up to 3000 m altitude.
8. Place the machine the way that the cooling air can enter the vents without
restriction to. It is necessary to ensure that no impurities, especially metal
particles, are not drawn into the machine.
9. Cutting machine in terms of interference suppression is intended primarily
for industrial premises. In the case of use of other areas may be need for
special measures (see EN 60974-10).
10. The machine must be protected against
a. Moisture and rain and snow
b. Mechanical damage
c. Draft and any ventilation of neighbouring machine
d. Excessive overloading - crossing technical parameters
e. Rough handling

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ELECTROMAGNETIC COMPATIBILITY
The welding device is in terms of interference designed primarily for industrial
areas. It meets the requirements of EN 60974-10 class A and it isn’t designed
for using in residential areas, where the electrical energy is supplied by public
low-voltage power supply network. It can be here potential problems with
ensuring of electromagnetic compatibility in this areas, due to interference
caused by power lines as well as the radiated interference.
During operation, the device may be the source of interference.
Caution
We warn users, that they are responsible for possible interference from welding.
4. TECHNICAL DATA
Method Plasma cutting
Mains voltage V/Hz 1x110/50-60 1x230/50-60
Cutting current range A 20 - 30 20 - 40
Open-circuit voltage U20 V 320
Mains protection A 25 @ 16 @
Max. effective current I1eff A 20,4 15,4
Cutting current (DC=100%) I2 A 20 28
Cutting current (DC=60%) I2 A 22 33
Cutting current (DC=x%) I2 A 35%=30 50%=40
Max. productive cut. thickness - carbon steel mm 8 10
Max. Cutting thickness - carbon steel
(separate mat.)
mm 15 20
Quality cutting
thickenss
Carbon steel mm 10 15
Stainless steel mm 8 12
Aluminium mm 6 10
Copper mm 3 4
Max. Input pressure bar 8,5
Working pressure (torch PT-60/ABICUT 45) bar 4,4 – 5,0/5,0
Air consumption (torch PT-60/ABICUT 45) l/min 150/119
Arc ignition pneu-mechanic
Current regulation continuous
Protection IP 23S
Standards EN 60974-1, EN 60974-10 cl. A
Dimensions (w x l x h) mm 148 x 490 x 295
Weight kg 8,4

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IMPORTANT NOTICE 
Please keep in mind that at the set maximum cutting current parameters, the
current consumption from the mains increases significantly when the distance
between the torch and the material is increased (arc extension).
This can cause unwanted tripping of the circuit breaker. This phenomenon can
also occur if the consumable material (nozzle, electrode) is worn out.
Precautions:
It is recommended to cut at a constant distance from the material (as small as
possible) and to maintain select an adequate cutting current (do not use high
cutting current values unnecessarily).

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5. MAIN PARTS OF THE MACHINE
FRONT AND REAR PANELS
Fig. 1 Main parts of the machine
Pos. Description
A1 Connector - torch
A2 Quick connector – earthing cable
A3 Potentiometer-set cut current
A4 LED indicator – when illuminated, the machine is ON
A5 LED indicator. If the LED illuminates the thermo-switch is
disconnected. In such a case leave the machine on to cool down.
Second warning is when the mains voltage is over 270 V.
A6 LED Error
1. LED illuminates and the air valve regularly opens and closes
-
there is a shortcut among the shield cup and the cutting tip.

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2. LED illuminates and the air valve regularly opens and closes
- the cutting tip and the electrode are not fitted properly.
3. LED flashes – there is not shield cup or the shield cup is not
fitted properly.
4.
LED illuminates
–
low air pressure
A7 LED torch burning – illuminates when the torch trigger is
pressed. On the torch is voltage.
A8
Switch
Setting of gas flow
Continuous cutting
A9 Manometer
A10 Gas fitting
A11 Controller
A12 Switch ON/OFF
A13 Mains cable
6. ACCESSORIES
ON REQUEST
Pos. Item No Description
5081 Circular Cutting Attachment PT-60
742.D121.1 Circular Cutting Attachment ABICUT 45
24 5302 Air filter AT 1000
25 5304 Set for filter AT 1000
S777c. Welding Helmet Barracuda S777C Black
5048 Torch Plasma PT-60 6m
381.0001.1 Torch ABICUT 45 6 m ALFA IN
7101 Silicone Lubricant Brutto 6 g
7102 Silicone Lubricant Brutto 9 g
Fig. 2 Circular Cutting Attachment Fig. 3 Air filter AT 1000
PT-60

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Fig. 4a Torch PT-60
Pos. Item No Description
1 5050 PT-60 Hand Torch Head 70deg
1a 5052 O-Ring PT-60, SCP 60, SCB 50 (pkg.2)
2 5053 Hand Handle with Switch
2a 5011 Switch
3 5055 Electrode, Back Striking (pkg.10)
4 5056 Swirl Ring (pkg.2)
5 5058 Tip, Contact Cutting, Ø 0.8 (20-30A), Back
Striking (pkg.10)
5 5057 Tip, Contact Cutting, Ø 0.65 (10-20A), Back
Striking
(pkg.10)
6 5060 Tip, Contact Cutting, Ø 0.9 (30-40A), Back

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Striking (pkg.10)
7 5061 Flat Tip, Cutting, Ø 1.0 (40-50A), Back Striking
(pkg.10)
7 5062 Flat Tip, Cutting, Ø 1.1 (50-60A), Back Striking
(pkg.10)
8 5063 Extended Electrode, Back Striking (pkg.10)
9 5064 Extended Tip, Contact Cutting, Ø 0.65 (10-20A),
Back Striking
(pkg.10)
9 5065 Extended Tip, Contact Cutting, Ø 0.8 (20-30A),
Back Striking
(pkg.10)
10 5066 Extended Tip, Contact Cutting, Ø 0.9 (30-40A),
Back Striking (pkg.10)
11 5067 Retaining Cap, 6 holes
11 5068 Retaining Cap, 6 holes, Maximum Life
12 5069 Double pointed Spacer
N/S 5025 Wrench for Electrode
13 5070 Contact Tip, Ø 0.9 (30-40A), Back Striking
(pkg.10)
13 5071 Contact Tip, Ø 1.0 (40-50A), Back Striking
(pkg.10)
13 5072 Contact Tip, Ø 1.1 (50-60A), Back Striking
(pkg.10)
14 5073 Shield Cup Body
15 5074 Shield Cap, Hand
16 5076 Extended Shielded Tip, Ø 0.9 (40A), Back Striking
(pkg.10)
16 5077 Extended Shielded Tip, Ø 1.0 (50A), Back Striking
(pkg.10)
16 5078 Extended Shielded Tip, Ø 1.1(60A), Back Striking
(pkg.10)
17 5131 Shield Cup Body
18 5132 Extended Shielded 40-60A PT-60 (pkg.10)
N/S 5081 Circle Cutting Attachment
Note – the bold items are equipped on the torch
Recommended starting kit for the Torch PT-60:
Pos. Item No Description pc
5085
-
1
Starting Kit for
PT
-
60
Content:
3 5055 Electrode, Back Striking (pkg.10) 4
5 5057 Tip, Contact Cutting, Ø 0.65 (10-20A), 1

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Back Striking (pkg.10)
5 5058 Tip, Contact Cutting, Ø 0.8 (20-30A),
Back Striking (pkg.10) 1
6 5060 Tip, Contact Cutting, Ø 0.9 (30-40A),
Back Striking (pkg.10) 2
7 5061 Flat Tip, Cutting, Ø 1.0 (40-50A), Back
Striking (pkg.10) 2
8 5063 Extended Electrode, Back Striking
(pkg.10)
1
10 5066 Extended Tip, Contact Cutting, Ø 0.9
(30-40A), Back Striking (pkg.10) 1
12 5069 Double pointed Spacer 1
Fig. 4b Torch ABICUT 45
Pos. Item No Description
13 748.0020.1 Torch body ABI25/45
14 748.0053.1 Handle ABI25/45
15 185.0005 Switch ON/OFF
16 748.0032.10 Electrode standard ABI25/45
17 748.0048.10 Electrode Long ABI25/45
18 748.0033.2 Air diffuser ABI25/45
19 748.0034.10 Cutting Tip 0,65 Standard ABI25/45
19 748.0035.10 Cutting Tip 0,8 Standard ABI25/45

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19 748.0061.10 Cutting Tip 1,0 Standard ABI25/45
20 748.0049.10 Cutting Tip 0,9 Long ABI25/45
21 748.0052.2 Shield Cup ABI 45-35A
21 748.0043.2 Shield Cup ABI45- 45A
22 748.0050.5 Standoff Guide ABI25/45
23 748.0059.1 Multi key ABI25/45
748.0057.1 Cable bundle ABI45
Note – the bold items are equipped on the torch
Recommended starting kit for the Torch ABICUT 45 PEGAS:
Pos.
Item No
Description
pc
748.START Starting Kit for ABICUT 45 PEGAS
Content:
16
748.0032.10
Electrode standard ABI25/45
2
17
748.0048.10
Electrode Long ABI25/45
1
19 748.0035.10 Cutting Tip 0,8 Standard ABI25/45 4
19 748.0061.10 Cutting Tip 1,0 Standard ABI25/45 1
20
748.0049.10
Cutting Tip
0,9 Long ABI25/45
2
21
748.0043.2
Shield Cup ABI45 45A
1
22 748.0050.5 Standoff Guide ABI25/45 1
COMMENTS ON CONSUMABLES
Shield cups – Retaining cups
PT-60
1. You can choose from two shield cups. Both have 6 holes for the
compressed air.
2. For longer life particularly when cutting at 40 A we suggest to use nozzle
5068.
ABICUT45
1. You can choose from two shield cups. They differ in the number of holes
for compressed air (4 respectively 6 holes). It is appropriate to use shield
cup 748.0052.2 (35 A) for lower power, cut would be better.
2. For maximum performance it is necessary to use shield cup 748.0043.2
(45A) with six holes for air.

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Long electrode and a long cutting tip
1. The combination of Long electrode and Long cutting tip is aimed for cutting
in angles or in spaces where standard electrode cannot reach.
2. It is possible to drag the Long cutting tip directly on the cutting material up
to thickness of 5.8 mm without the guiding spring. The Lifetime of the
cutting tip and the electrode is reduced by 30% - 50%.
Standard electrode and standard cutting tips
PT- 60
1. For smaller cutting thickness (carbon steel) up to 4 mm it is better to use
Cutting Tip 5057, Ø 0.65 (10-20A) in combination with electrode 5055.
2. For cutting thicknesses from 4 to 6mm use Cutting Tip 5058, Ø 0.8 (20-
30A). For cutting thicknesses from 6 to 8 mm use Cutting Tip 5060, Ø 0.9
(30-40A). For cutting thicknesses over 8 mm use Cutting Tip 5061, Ø 1,0
(40-50A).
ABICUT45
1. It is possible to drag the standard cutting tip directly on the cutting material
up to thickness of 10 mm without the guiding spring. The Lifetime of the
cutting tip and the electrode is reduced by 30% - 50%.
2. It is better to use standard cutting tip 748.0034.10 0. (Cutting Tip 0,65
Standard ABI25/45) in combination with standard electrode 748.0032.10
for smaller cut thickness. Cut is narrower, better.
7. GETTING STARTED
Getting started must be consistent with technical data and conditions of use.
TORCH CONNECTION SCHEMA
PIN
NO. TORCH
1 Trigger
2 Trigger
3 /
4 /
5 Pilot arc
6 Pilot arc
7 /
8 Safety

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FIRST STEPS
NOTE This equipment must only be used by qualified personnel.
1. Before beginning work is necessary to connect the machine to the mains
(1x110-230V, 50/60 Hz).
2. Check completeness of the mounted cutting torch.
3. Connect the compressed air quick connector to the connector on the rear
wall of the machine.
4. Connect the mains plug to the mains.
5. After turning the power switch pos. A12 the LED “ON” pos. A4 must
illuminate.
6. Connect the work lead cable to the material being cut.
7. Check the input pressure. The max. input pressure is 8,5 bar, the minimal
input pressure is 4,4 bar.
8. Set potentiometer pos. A3 to the cutting power you need.
9. Fit the torch with appropriate type of cutting tip electrode and shield cup
according to the selected cutting current.
10. Switch the machine on by switch A12.
11. Press the torch trigger, the pilot arc will ignite.
12. Move the torch to the cutting material, the pilot arc will change to the
cutting arc. If the pilot arc burns longer than 3 s, it automatically switches
off.
13. Start with cutting. After the cut end release the torch trigger, the arc
will switch off.
14. Switch off the machine, when is the post gas process done. It takes
more than 1 minute.
REQUIREMENTS FOR SOURCE OF COMPRESSED AIR
1. Delivered air pressure must be max. 8,5 bar and min. 4,4 bar.
2. Air consumption 170 l/min (for PT-60).
3. Compressed air for the plasma must be clean and dry.
4. Pressure dew point +3 °C.
5. Maximum oil content 0.1 mg/m3.
6. Maximal size of solid particles 15 microns.
7. The minimal size of an air tank is 50 l.
8. No additional oiling if the pressure air is permitted. That could damage the
plasma machine and the cutting torch.
9 Safety

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OPTIONAL AIR FILTERS
To achieve high quality cutting and to avoid serious disturbances to the torch it
is highly advised to include the air filter.
Pos. Item No Description
24 5302 Air filter AT 1000
25 5304 Set for filter AT 1000
Fig. 5 Air filter AT 1000
8. CUTTING
1. Press the torch trigger. The pilot arc will ignite. Then you have to
immediately attach the torch to the cut material. At this point begins to burn
the main arc between the torch and the material.
2. Move the torch with a constant speed. Cutting speeds vary according to
torch output amperage, the type of material being cut, and operator skill.
3. Output current setting or cutting speeds may be reduced to allow slower
cutting when following a line, or using a template or cutting guide while still
producing cuts of excellent quality.
4. To achieve a good cutting quality make sure the distance between the tip
and the material is about 2 mm. The Standoff Guide ABI25/45 pos. 22
located at the end of the plasma torch guarantees the distance. At a
greater distance decreases cutting power and the arc may go off. With too
small distance the torch parts will be worn off faster.

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5. Plasma cutting may be done in all possible positions (vertically,
horizontally, overhead, vertical ascending and descending), but as far as
possible choose primarily horizontal cut. In other positions the operator is
increasingly threatened by flying drops of molten material.
6. We recommend starting cutting at the edge of the material. If needed to
start from the centre of the material, or to cut hole into the material, slightly
tilt the torch head and gradually it straighten into a vertical position so the
spraying material would not damage the cutting tip (see Figure 6). This
workflow must always be followed, if the thickness of material is above
above 3 mm.
7. In case of cutting in the corner or around the corner (see Figure 7), use the
long electrode and cutting tip (pos. 17 and 20). The cutting power while
using the Long cutting tip is decreased.
Fig. 6 Fig. 7
IMPORTANT RULES
1. The pilot arc burning time should be limited only to the time necessary. It
lowers the wear of the cutting tips and electrodes.
2. Never turn off the main switch immediately after finishing cutting but
always leave time to run cooling cycle to cool down the torch. Immediate
turn-off only in case of emergency.
3. Ensure a good el. contact of the work lead clamps and cutting material.
4. Check and timely exchange cutting tips and the electrodes. Lifetime of
these parts is only a few hours of cutting time and is highly dependent on
compliance with the principles of good cutting.
5. Disconnect the machine from the mains before replacing the torch
consumable parts.
6. Unplug the machine from the mains before any intervention inside the
machine.
7. PEGAS 41 PLASMA PFC is adapted for use with torch ABICUT 45. This
combination comply with EN 60974-7 Article 10.1.4. Using any other type
and design of a torch must be approved by ALFA IN a.s.
8. Imperfect capture of condensate would cause its elimination in the area of
the cutting tip and it would prevent ignition of the pilot arc.

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SOURCES OF POOR QUALITY CUTS
Shallow penetration of the cut
1. The cutting speed is too high. Make sure the slope of the cutting arc does
not exceed about 15° (see Figure 8).
2. High wear of the cutting tip or electrode (see Figure 9).
3. Too large thickness of material and not adequately chosen value of current
and diameter of the cutting tip.
4. Bad contact between the work lead clamps and material.
Cutting arc is unstable, goes off and "shoots"
1. Worn out cutting tip or electrode
2. High pressure
3. Impurities in the pressure air
4. not captured water condensate
Conical cut
1. If there is a false cut (see Figure 10) turn off the machine, release the
shield cup and rotate the cutting tip about 1/4 and again try to cut.
2. Damaged cutting tip and electrode.
3. The position of the torch is not perpendicular to the material.
4. Too large distance from the cutting tip to the material.
Max 15
o
Fig. 8 Fig. 9 Fig. 10
9. MAINTENANCE
1. A great care should be taken to the cutting torch. The molten material
sprays while cutting. This sputter contaminates the interior space of the
torch. The worn parts (consumables) of a plasma torch should be regularly
maintained and timely exchanged. Regularly check the condition of
diffuser channels (see diagram of the torch). If contaminated, you must
clean it with a pressure air or to replace the diffuser. Poor state of the
diffuser has a negative impact on the quality of cutting and causes very
strong interference that may cause the collapse of the machine control
electronics or influence the surrounding devices. If the cable bundle of the
torch is worn out it must be replaced immediately - danger of electrical