technical.service@hypertherm.com (Technical Service Email)
800-737-2978 Tel (Customer Service)
customer.service@hypertherm.com (Customer Service Email)
866-643-7711 Tel (Return Materials Authorization)
877-371-2876 Fax (Return Materials Authorization)
return.materials@hypertherm.com (RMA email)
Hypertherm Automation
5 Technology Drive, Suite 300
West Lebanon, NH 03784 USA
603-298-7970 Tel
603-298-7977 Fax
Hypertherm Plasmatechnik GmbH
Technologiepark Hanau
Rodenbacher Chaussee 6
D-63457 Hanau-Wolfgang, Deutschland
49 6181 58 2100 Tel
49 6181 58 2134 Fax
49 6181 58 2123 (Technical Service)
Hypertherm (S) Pte Ltd.
82 Genting Lane
Media Centre
Annexe Block #A01-01
Singapore 349567, Republic of Singapore
65 6841 2489 Tel
65 6841 2490 Fax
65 6841 2489 (Technical Service)
Hypertherm (Shanghai) Trading Co., Ltd.
Unit A, 5th Floor, Careri Building
432 West Huai Hai Road
Shanghai, 200052
PR China
86-21 5258 3330/1 Tel
86-21 5258 3332 Fax
Hypertherm Europe B.V.
Vaartveld 9
4704 SE
Roosendaal, Nederland
31 165 596907 Tel
31 165 596901 Fax
31 165 596908 Tel (Marketing)
31 165 596900 Tel (Technical Service)
00 800 4973 7843 Tel (Technical Service)
Hypertherm Japan Ltd.
Level 9, Edobori Center Building
2-1-1 Edobori, Nishi-ku
Osaka 550-0002 Japan
81 6 6225 1183 Tel
81 6 6225 1184 Fax
Hypertherm Brasil Ltda.
Rua Bras Cubas, 231 – Jardim Maia
Guarulhos, SP - Brasil
CEP 07115-030
55 11 2409 2636 Tel
55 11 2408 0462 Fax
Hypertherm México, S.A. de C.V.
Avenida Toluca No. 444, Anexo 1,
Colonia Olivar de los Padres
Delegación Álvaro Obregón
México, D.F. C.P. 01780
52 55 5681 8109 Tel
52 55 5683 2127 Fax
Hypertherm Korea Branch
#3904 Centum Leaders Mark B/D,
1514 Woo-dong, Haeundae-gu, Busan
Korea, 612-889
82 51 747 0358 Tel
82 51 701 0358 Fax
03/15/12
ELECTROMAGNETIC COMPATIBILITY (EMC)
Introduction
Hypertherm’s CE‑marked equipment is built
in compliance with standard EN60974‑10.
The equipment should be installed and used
in accordance with the information be low to
achieve electromagnetic compatibility.
The limits required by EN60974‑10 may not be
adequate to completely eliminate interference
when the affected equipment is in close
proximity or has a high degree of sen sitivity.
Insuch cases it may be nec essary to use other
mea sures to further reduce interference.
This cutting equipment is designed for use only
in an in dus tri al environment.
Installation and use
The user is responsible for installing and
using the plasma equipment according to the
manufacturer’s instructions. If electromagnetic
disturbances are detected then it shall be
the responsibility of the user to resolve the
situation with the technical assistance of the
manufacturer. In some cases this remedial
action may be as simple as earthing the
cutting circuit, see Earthing of Workpiece.
Inother cases it could involve constructing an
electromagnetic screen enclosing the power
source and the work complete with associated
input filters. In all cases electromagnetic
disturbances must be reduced to the point
where they are no longer troublesome.
Assessment of area
Before installing the equipment the user
shall make an assessment of potential
electromagnetic problems in the surrounding
area. The following shall be taken into account:
a. Other supply cables, control cables,
signalling and telephone cables; above,
below and adjacent to the cutting equipment.
b. Radio and television transmitters and
receivers.
c. Computer and other control equip ment.
d. Safety critical equipment, for example
guarding of industrial equipment.
e. Health of the people around, for example the
use of pacemakers and hearing aids.
f. Equipment used for calibration or
measurement.
g. Immunity of other equipment in the
environment. User shall ensure that other
equipment being used in the environment
is compatible. This may require additional
protection measures.
h. Time of day that cutting or other activities are
to be carried out.
The size of the surround ing area to be
considered will depend on the structure of
the building and other activities that are taking
place. The surrounding area may extend beyond
the bound aries of the premises.
Methods of reducing
emissions
Mains supply
Cutting equipment must be connected to the
mains supply according to the manufacturer’s
recommendations. If interference occurs, it may
be necessary to take additional precautions
Compliance Information EMC-1
9/10
ElEctromagnEtic compatibility (Emc)
such as filtering of the mains supply.
Consideration should be given to shielding the
supply cable of permanently installed cutting
equipment, in metallic conduit or equivalent.
Shielding should be electrically continuous
throughout its length. The shielding should be
connected to the cutting mains supply so that
good electrical contact is maintained between
the conduit and the cutting pow er source
enclosure.
Maintenance of cutting equipment
The cutting equipment must be routinely
maintained according to the manufacturer’s
recommendations. All access and service doors
and covers should be closed and properly
fastened when the cutting equipment is in
operation. The cutting equipment should not
be modified in any way except as set forth in
and in accordance with the manufacturer’s
written instructions. For example, the spark gaps
of arc striking and stabilizing devices should
be adjusted and maintained according to the
manufacturer’s recommendations.
Cutting cables
The cutting cables should be kept as short
aspossible and should be positioned close
together, running at or close to the floor level.
Equipotential bonding
Bonding of all metallic components in the
cutting installation and adjacent to it should
be considered. However, metallic com po nents
bonded to the workpiece will increase the risk
that the operator could receive a shock by
touching these metallic components and the
electrode (nozzle for laser heads) at the same
time. The operator should be insulated from all
such bonded metallic components.
Earthing of workpiece
Where the workpiece is not bonded to earth
for electrical safety, nor connected to earth
because of its size and position, for example,
ship’s hull or building steelwork, a connection
bonding the work piece to earth may reduce
emis sions in some, but not all instances.
Careshould be taken to prevent the earthing
ofthe workpiece increasing the risk of injury
to users, or damage to other electrical
equipment. Where necessary, the connection
of the workpiece to earth should be made by
a direct connection to the workpiece, but in
some countries where direct connection is not
permitted, the bonding should be achieved by
suitable capacitances selected according to
national regulations.
Note: the cutting circuit may or may not
be earthed for safety reasons. Changing
the earthing arrangements should only be
authorized by a person who is competent to
assess whether the changes will increase the
risk of injury, for example, by allowing parallel
cutting current return paths which may damage
the earth cir cuits of other equipment. Further
guidance is provided in IEC 60974‑9, Arc
Welding Equip ment, Part 9: Installation and
Use.
Screening and shielding
Selective screening and shielding of other
cables and equipment in the surrounding
area may alleviate problems of interference.
Screening of the entire plasma cutting
installation may be con sid ered for special
applications.
EMC-2 Compliance Information
9/10
WARRANTY
Attention
Genuine Hypertherm parts are the factory‑
recommended replacement parts for your
Hypertherm system. Any damage or injury
caused by the use of other than genuine
Hypertherm parts may not be covered by the
Hypertherm warranty, and will constitute misuse
of the Hypertherm Product.
You are solely responsible for the safe use of
the Product. Hypertherm does not and cannot
make any guarantee or warranty regarding the
safe use of the product in your environment.
General
Hypertherm, Inc. warrants that its Products
shall be free from defects in materials and
workmanship for the specific periods of time
set forth herein and as follows: if Hypertherm
is notified of a defect (i) with respect to the
power supply within a period of two (2) years
from the date of its delivery to you, with the
exception of Powermax brand power supplies,
which shall be within a period of three (3) years
from the date of delivery to you, and (ii) with
respect to the torch and leads within a period
of one (1) year from its date of delivery to you,
and with respect to torch lifter assemblies
within a period of one (1) year from its date of
delivery to you, and with respect to laser heads
within a period of one (1) year from its date of
delivery to you, and with respect to Automation
products one (1) year from its date of delivery
to you, with the exception of the EDGE Pro
CNC and ArcGlide THC, which shall be within
a period of two (2) years from the date of
delivery to you.
This warranty shall not apply to any Powermax
brand power supplies that have been used with
phase converters. In addition, Hypertherm does
not warranty systems that have been damaged
as a result of poor power quality, whether from
phase converters or incoming line power. This
warranty shall not apply to any Product which
has been incorrectly installed, modified, or
otherwise damaged.
Hypertherm provides repair, replacement or
adjustment of the Product as the sole and
exclusive remedy, if and only if the warranty
set forth herein properly is invoked and
applies. Hypertherm, at its sole option, shall
repair, replace, or adjust, free of charge, any
defective Products covered by this warranty
which shall be returned with Hypertherm’s prior
authorization (which shall not be unreasonably
withheld), properly packed, to Hypertherm’s
place of business in Hanover, New Hampshire,
or to an authorized Hypertherm repair facility,
all costs, insurance and freight pre paid by
the customer. Hypertherm shall not be liable
for any repairs, replacement, or adjustments
of Products covered by this warranty, except
those made pursuant to this paragraph and
with Hypertherm’s prior written consent.
The warranty set forth above is exclusive and is
in lieu of all other warranties, express, implied,
statutory, or otherwise with respect to the
Products or as to the results which may be
obtained therefrom, and all implied warranties
or conditions of quality or of merchantability
or fitness for a particular purpose or against
infringement. The foregoing shall constitute the
sole and exclusive remedy for any breach by
Hypertherm of its warranty.
Compliance Information W-1
9/10
Warranty
WARRANTY
Distributors/OEMs may offer different or
additional warranties, but Distributors/OEMs
are not authorized to give any additional
warranty protection to you or make any
representation to you purporting to be binding
upon Hypertherm.
Patent indemnity
Except only in cases of products not
manufactured by Hypertherm or manufactured
by a person other than Hypertherm not in strict
conformity with Hypertherm’s specifications
and in cases of designs, processes, formulae,
or combinations not developed or purported
to be developed by Hypertherm, Hypertherm
will have the right to defend or settle, at
its own expense, any suit or proceeding
brought against you alleging that the use
of the Hypertherm product, alone and not
in combination with any other product not
supplied by Hypertherm, infringes any patent
of any third party. You shall notify Hypertherm
promptly upon learning of any action or
threatened action in connection with any
such alleged infringement (and in any event
no longer than fourteen (14) days after
learning of any action or threat of action), and
Hypertherm’s obligation to defend shall be
conditioned upon Hypertherm’s sole control
of, and the indemnified party’s cooperation and
assistance in, the defense of the claim.
Limitation of liability
In no event shall Hypertherm be liable to
any person or entity for any incidental,
consequential direct, indirect, punitive
or exemplary damages (including but
not limited to lost profits) regardless of
whether such liability is based on breach
of contract, tort, strict liability, breach of
warranty, failure of essential purpose,
or otherwise, and even if advised of the
possibility of such damages.
National and local codes
National and local codes governing plumbing
and electrical installation shall take precedence
over any instructions contained in this manual.
In no event shall Hypertherm be liable for injury
to persons or property damage by reason of
any code violation or poor work practices.
Liability cap
In no event shall Hypertherm’s liability,
if any, whether such liability is based on
breach of contract, tort, strict liability,
breach of warranties, failure of essential
purpose or otherwise, for any claim,
action, suit or proceeding (whether in
court, arbitration, regulatory proceeding
or otherwise) arising out of or relating
to the use of the Products exceed in
the aggregate the amount paid for the
Products that gave rise to such claim.
Insurance
At all times you will have and maintain
insurance in such quantities and types, and
with coverage sufficient and appropriate to
defend and to hold Hypertherm harmless in the
event of any cause of action arising from the
use of the products.
W-2 Compliance Information
9/10
Transfer of rights
You may transfer any remaining rights you may
have hereunder only in connection with the
sale of all or substantially all of your assets or
capital stock to a successor in interest who
agrees to be bound by all of the terms and
conditions of this Warranty. Within thirty (30)
days before any such transfer occurs, you
agree to notify in writing Hypertherm, which
reserves the right of approval. Should you
fail timely to notify Hypertherm and seek its
approval as set forth herein, the Warranty set
forth herein shall be null and void and you will
have no further recourse against Hypertherm
under the Warranty or otherwise.
Warranty
Compliance Information W-3
9/10
Warranty
W-4 Compliance Information
9/10
Safety information
Before operating any Hypertherm equipment, read the separate Safety and Compliance Manual
(80669C) included with your product for important safety information.
Consumable life .................................................................................................................................................. 2‑2
Hand torch setup ............................................................................................................................................... 2‑3
Choose the hand torch consumables ................................................................................................ 2‑3
Hand torch consumables ...................................................................................................................... 2‑4
Install the hand torch consumables ..................................................................................................... 2‑5
Converting a Duramax retrofit machine torch into a mini torch .................................................... 2‑7
Mount the torch ........................................................................................................................................ 2‑9
Choose the machine torch consumables ........................................................................................2‑12
Install the machine torch consumables ............................................................................................2‑15
Aligning the torch ..................................................................................................................................2‑15
Using the cut charts .......................................................................................................................................... 3‑2
100 amp mechanized shielded cutting for Powermax1650.......................................................... 3‑5
85 amp mechanized shielded cutting for Powermax1650 ............................................................ 3‑7
80 amp mechanized shielded cutting for Powermax1250/1650 ..............................................3‑11
Duramax Retrofit Torch Operator Manuali
Table of ConTenTs
65 amp mechanized shielded cutting for Powermax1250/1650 ..............................................3‑13
60 amp mechanized shielded cutting for Powermax1000/1250/1650 ...................................3‑17
45 amp mechanized shielded cutting for Powermax1000/1250/1650 ...................................3‑19
100 amp mechanized unshielded cutting for Powermax1650 ...................................................3‑23
85 amp mechanized unshielded cutting for Powermax1650......................................................3‑25
65 amp mechanized unshielded cutting for Powermax1250/1650 ..........................................3‑29
45 amp mechanized unshielded cutting for Powermax1000/1250/1650 ..............................3‑33
FineCut® consumables for Powermax1000/1250/1650.............................................................3‑37
Using the hand torch .......................................................................................................................................3‑42
Operate the safety trigger ...................................................................................................................3‑42
Hand torch cutting hints ......................................................................................................................3‑43
Start a cut from the edge of the workpiece.....................................................................................3‑44
Pierce a workpiece ................................................................................................................................3‑45
Gouge a workpiece ..............................................................................................................................3‑46
Common hand‑cutting faults ..............................................................................................................3‑49
Using the machine torch ................................................................................................................................3‑50
Ensure the torch and table are set up correctly .............................................................................3‑50
Understand and optimize cut quality .................................................................................................3‑50
To pierce a workpiece using the machine torch ............................................................................3‑53
Common machine‑cutting faults ........................................................................................................3‑53
Section 4
Maintenance and parts .....................................................................................................................4-1
Inspect the consumables ................................................................................................................................. 4‑3
Hand torch replacement parts ........................................................................................................................ 4‑4
Machine torch replacement parts .................................................................................................................. 4‑6
Consumable life .................................................................................................................................................. 2‑2
Hand torch setup ............................................................................................................................................... 2‑3
Choose the hand torch consumables ................................................................................................ 2‑3
Hand torch consumables ...................................................................................................................... 2‑4
Install the hand torch consumables ..................................................................................................... 2‑5
Converting a Duramax retrofit machine torch into a mini torch .................................................... 2‑7
Mount the torch ........................................................................................................................................ 2‑9
Choose the machine torch consumables ........................................................................................2‑12
Install the machine torch consumables ............................................................................................2‑15
Aligning the torch ..................................................................................................................................2‑15
Duramax™ series handheld and machine retrofit torches are available for the Powermax1000,
Powermax1250, and Powermax1650 systems. The ETR (Easy Torch Removal)™ quick‑disconnect
system makes it easy to remove the torch for transport or to switch from one torch to the other if
your applications require the use of different torches. The torches are cooled by ambient air and do
not require special cooling procedures.
This section explains how to setup your torch and choose the appropriate consumables for the job.
Consumable life
How often you need to change the consumables on your retrofit torch will depend on a number of
factors:
•Thickness of the material – the thicker the material being cut, the more often consumables
need to be changed.
•Average length of cut – the longer the average cut, the more often consumables need to
be changed.
•Type of cutting – handheld cutting will require more consumable changes than machine
cutting.
•Air quality – the presence of oil, moisture, or other contaminants will reduce consumable
life.
•Piercing / edge starting – piercing the metal causes more consumable wear then starting
cuts from the edge of the metal.
•Proper torch‑to‑work distance – when gouging or cutting with unshielded consumables,
maintaining proper torch‑to‑work distance will result in better consumable life.
•Proper pierce height – maintaining proper pierce height will result in better consumable
life.
•Cutting in “continuous pilot arc” mode or normal cutting mode – cutting with a continuous
pilot arc causes more consumable wear than cutting in normal cutting mode.
You will find more information about proper cutting techniques in Section 3, Operation.
2-2 Duramax Retrofit Torch Operator Manual
Hand torch setup
Duramax HRT
TORCH SETUP
Consumables
Duramax HRTs
Consumables
Safety trigger
Safety trigger
Choose the hand torch consumables
Duramax retrofit torches are shipped with a full set of cutting consumables pre‑installed.
Hypertherm also includes spare cutting electrodes, nozzles, and gouging consumables in the
consumables box, for handheld torches.
Consumables for handheld cutting are shown on the next page. Notice that the retaining cap and
electrode are the same for cutting, gouging, and FineCut® applications. Only the shield, nozzle,
and swirl ring are different.
For the best cut quality on thin materials, you may prefer to use FineCut consumables, or use a
45A nozzle and reduce the current setting to 45 amps.
Duramax Retrofit TorchOperator Manual2-3
Torch seTup
Hand torch consumables
Drag-cutting consumables: Powermax1000/1250/1650
4
5
A
220941
Nozzle
6
5
A
220818
Shield
220854
Retaining cap
220992
Shield
Gouging consumables: Powermax1000/1250/1650
220819
Nozzle
8
5
A
220816
Nozzle
1
0
0
A
220990
Nozzle
220842
Electrode
220857
Swirl ring
220994
Swirl ring
6
8
5
5
A
A
220798
Shield
FineCut
220931
Shield
220797
Nozzle
220854
Retaining cap
1
0
0
A
220991
220842
Electrode
Nozzle
®
consumables: Powermax1000/1250/1650
220854
Retaining cap
220930
Nozzle
220842
Electrode
220857
Swirl ring
220994
Swirl ring
220947
Swirl ring
Powermax1000 – Use 45‑65 A consumables
Powermax1250 – Use 45‑85 A consumables
Powermax1650 – Use 45‑100 A consumables
2-4 Duramax Retrofit Torch Operator Manual
TORCH SETUP
Install the hand torch consumables
WARNING
INSTANTON TORCHES
PLASMA ARC CAN CAUSE INJURY AND BURNS
The plasma arc comes on im me di ate ly when the torch trigger is
activated. Make sure the power is OFF before changing consumables.
To operate the hand torch, a complete set of consumable parts must be installed: shield, retaining
cap, nozzle, electrode, and swirl ring.
With the power switch in the OFF (O) position, install the torch consumables asshown below.
Swirl ring
Electrode
Nozzle
Retaining cap
Shield
Duramax Retrofit TorchOperator Manual2-5
Torch seTup
Machine torch setup
Duramax MRT
Mounting
Consumables
sleeve
Coupler
Positioning sleeve
Strain relief nut
Torch lead
Gear rackStrain relief body
Main strain
relief nut
Duramax MRT without positioning sleeve (mini torch)
Mounting
Consumables
sleeve
Coupler
Strain relief nut
Torch lead
Strain relief body
Before using either style of machine torch, you must:
•Mount the torch on your cutting table or other equipment.
•Choose and install the consumables.
•Align the torch.
•Attach the torch lead to the power supply.
•Set up the power supply for remote starting with either the remote‑start pendant or a
machine interface cable.
2-6 Duramax Retrofit Torch Operator Manual
TORCH SETUP
Converting a Duramax retrofit machine torch into a mini torch
You can convert a full‑length machine torch to a mini‑machine torch by removing the positioning
sleeve.
Note: If you are converting a full‑length machine torch to a mini‑machine torch and
mounting the torch at the same time, skip this section and follow the instructions in
“Mount the torch” on page 2‑9.
Refer to the figures in the section “Machine torch setup” on page 2‑6 and follow these instructions.
Note: While disconnecting and reconnecting the torch parts, maintain the same orientation
between the torch head and torch lead. Twisting the torch head in relation to the
torch lead can cause damage.
1. Disconnect the torch lead from the power supply and remove the consumables from the torch.
2. Unscrew the strain relief body from the strain relief nut and slide the strain relief body back
along the torch lead.
3. Unscrew the strain relief nut from the positioning sleeve and slide the nut back along the torch
lead.
4. Unscrew the positioning sleeve from the coupler.
5. Unscrew the coupler from the mounting sleeve.
6. Remove the three screws from the consumables end of the mounting sleeve and slide the
mounting sleeve off the front of the torch body.
Duramax Retrofit TorchOperator Manual2-7
Torch seTup
Pilot wire
terminal screw
Torch head
Gas supply line
connection
Wire connector for
cap‑sensor switch
7. Disconnect the wire connector for the cap‑sensor switch.
8. Use a #2 Phillips screwdriver to remove the screw that secures the torch’s pilot wire to the
torch body.
9. Use 1/4‑inch and 3/8‑inch wrenches, or adjustable wrenches, to loosen the nut that secures
the gas supply line to the torch lead. Set the torch body aside.
10. Slide the coupler and positioning sleeve off the front of the torch lead.
11. Slide the coupler over the torch lead.
12. Reconnect the gas line to the torch lead.
13. Reattach the torch’s pilot wire to the torch body using the screw.
14. Reconnect the cap‑sensor switch’s wire connector.
15. Slide the mounting sleeve over the front of the torch body. Align the slot on the front of the
mounting sleeve (next to one of the three screw holes) with the cap‑sensor plunger on the
torch body.
16. Attach the mounting sleeve to the torch body using the three screws.
17. Screw the coupler into the mounting sleeve.
18. Screw the strain relief nut into the coupler.
19. Screw the strain relief body into the strain relief nut.
2-8 Duramax Retrofit Torch Operator Manual
TORCH SETUP
Mount the torch
Depending on the type of cutting table you have, you may or may not need to disassemble the
torch to route it through the track and mount it. If your cutting table’s track is large enough for you
to thread the torch through it without removing the torch body from the lead, do so and then attach
the torch to the lifter per the manufacturer’s instructions.
Note: The Duramax machine torches can be mounted on a wide variety of X‑Y tables, track
burners, pipe bevelers, and other equipment. Install the torch per the manufacturer’s
instructions and follow the instructions below for disassembly if necessary.
If you need to disassemble and reassemble the torch, refer to the figures in the section “Machine
torch setup” on page 2‑6 and follow these instructions.
Note: While disconnecting and reconnecting the torch parts, maintain the same orientation
between the torch head and torch lead. Twisting the torch head in relation to the
torch lead can cause damage.
1. Disconnect the torch lead from the power supply and remove the consumables from the torch.
2. Unscrew the strain relief body from the strain relief nut and slide the strain relief body back
along the torch lead.
3. Unscrew the strain relief nut from the positioning sleeve (full‑length machine torch) and slide
the nut back along the torch lead.
4. Unscrew the positioning sleeve from the coupler.
5. Unscrew the coupler from the mounting sleeve.
6. Remove the three screws from the consumables end of the mounting sleeve and slide the
mounting sleeve off the front of the torch body.
Duramax Retrofit TorchOperator Manual2-9
Torch seTup
Pilot wire terminal screw
Wire connector for
Torch head
7. Disconnect the wire connector for the cap‑sensor switch.
8. Use a #2 Phillips screwdriver to remove the screw that secures the torch’s pilot wire to the
torch body.
9. Use 1/4‑inch and 3/8‑inch wrenches, or adjustable wrenches, to loosen the nut that secures
the gas supply line to the torch lead. Set the torch body aside.
Gas supply line
connection
cap‑sensor switch
Note: Cover the end of the gas line on the torch lead with tape to keep dirt and other
contaminants from getting in the gas line when you route the lead through the track.
10. Slide the coupler, positioning sleeve (full‑length machine torch), strain relief nut, and strain
relief body off the front of the torch lead.
11. If you do not need the gear rack on a full‑length machine torch, slide the gear rack from the
positioning sleeve toward the consumables end of the sleeve.
12. Route the torch lead through the cutting table’s track.
2-10 Duramax Retrofit Torch Operator Manual
TORCH SETUP
13. Slide the strain relief body and strain relief nut over the torch lead.
14. If you are mounting a full‑length machine torch, slide the positioning sleeve over the torch
head.
15. Slide the coupler over the torch lead.
16. Reconnect the gas line to the torch lead.
17. Reattach the torch’s pilot wire to the torch body using the screw.
18. Reconnect the cap‑sensor switch’s wire connector.
19. Slide the mounting sleeve over the front of the torch body. Align the slot on the front of the
mounting sleeve (next to one of the three screw holes) with the cap‑sensor plunger on the
torch body.
20. Attach the mounting sleeve to the torch body using the three screws.
21. Screw the coupler into the mounting sleeve.
22. If you are mounting a full‑length machine torch, screw the positioning sleeve into the coupler.
23. Reconnect the strain relief nut and strain relief body.
24. Attach the torch to the lifter per the manufacturer’s instructions.
Duramax Retrofit TorchOperator Manual2-11
Torch seTup
Choose the machine torch consumables
Powermax systems with the Duramax MRT retrofit torch are shipped with a complete set
of consumables. Hypertherm also includes spare electrodes and nozzles. In addition, an
ohmic‑sensing retaining cap is available for use with shielded consumables. With shielded
consumables, the torch tip may touch the metal when cutting. With unshielded consumables, you
must keep the torch a small distance, about .08 inch (2 mm), away from the metal. Unshielded
consumables generally have a shorter life than shielded consumables.
Powermax1000 – Use 45‑65 A consumables
Powermax1250 – Use 45‑85 A consumables
Powermax1650 – Use 45‑100 A consumables
2-14 Duramax Retrofit Torch Operator Manual
TORCH SETUP
Install the machine torch consumables
WARNING
INSTANT-ON TORCHES
PLASMA ARC CAN CAUSE INJURY AND BURNS
The plasma arc comes on im me di ate ly when the torch is
activated. Make sure the power is OFF before changing the
consumables.
To operate the machine torch, a complete set of consumable parts must be installed: shield,
retaining cap, nozzle, electrode, and swirl ring.
With the power switch in the OFF (O) position, install the machine torch consumables in a manner
similar to the hand torch consumables. Refer to “Install the hand torch consumables” on page 2‑5.
Aligning the torch
Mount the machine torch perpendicular to the workpiece in order to get a vertical cut. Use a
square to align the torch at 0° and 90°.
Torch
0°
90°
Duramax Retrofit TorchOperator Manual2-15
Torch seTup
Torch installation
1. Turn OFF the power.
OFF
ON
2. Remove the power cord from the power receptacle.
3. Open the Easy Torch Removal (ETR) door and route the lead through the end cap.
AMPS
60
40
30
80
100
AC
V
50
60
PSI
70 80
4.0
5.0
6.0
BAR
_
+
ETR door
End cap
2-16 Duramax Retrofit Torch Operator Manual
4. Align the marks on the strain relief.
5. Pull back the quick‑release collar and insert
the lead’s gas fitting.
TORCH SETUP
Quick‑release collar
6. Slide the quick‑release collar forward to lock
the gas fitting in place. Make sure that the gas
fitting is secure.
7. Make sure that the red dot on the connector is
on top, then plug in the electrical connector.
Close the ETR door.
Duramax Retrofit TorchOperator Manual2-17
Torch seTup
2-18 Duramax Retrofit Torch Operator Manual
Section 3
Operation
In this section:
Using the cut charts .......................................................................................................................................... 3‑2
100 amp mechanized shielded cutting for Powermax1650.......................................................... 3‑5
85 amp mechanized shielded cutting for Powermax1650 ............................................................ 3‑7
80 amp mechanized shielded cutting for Powermax1250/1650 ..............................................3‑11
65 amp mechanized shielded cutting for Powermax1250/1650 ..............................................3‑13
60 amp mechanized shielded cutting for Powermax1000/1250/1650 ...................................3‑17
45 amp mechanized shielded cutting for Powermax1000/1250/1650 ...................................3‑19
100 amp mechanized unshielded cutting for Powermax1650 ...................................................3‑23
85 amp mechanized unshielded cutting for Powermax1650......................................................3‑25
65 amp mechanized unshielded cutting for Powermax1250/1650 ..........................................3‑29
45 amp mechanized unshielded cutting for Powermax1000/1250/1650 ..............................3‑33
FineCut® consumables for Powermax1000/1250/1650 ............................................................3‑37
Using the hand torch .......................................................................................................................................3‑42
Operate the safety trigger ...................................................................................................................3‑42
Hand torch cutting hints ......................................................................................................................3‑43
Start a cut from the edge of the workpiece.....................................................................................3‑44
Pierce a workpiece ................................................................................................................................3‑45
Gouge a workpiece ..............................................................................................................................3‑46
Common hand‑cutting faults ..............................................................................................................3‑49
Using the machine torch ................................................................................................................................3‑50
Ensure the torch and table are set up correctly .............................................................................3‑50
Understand and optimize cut quality .................................................................................................3‑50
To pierce a workpiece using the machine torch ............................................................................3‑53
Common machine‑cutting faults ........................................................................................................3‑53
Duramax Retrofit TorchOperator Manual3-1
OPERATION
Using the cut charts
The following sections provide cut charts for each set of mechanized consumables. A consumable
diagram with part numbers precedes each section.
The arc voltage increases as the consumables wear and the voltage setting should be increased to
maintain the correct Torch‑to‑Work Distance.
Note: Hypertherm collected the data under laboratory test conditions using new
consumables.
Estimated kerf-width compensation
The widths in the tables on the following two pages are for reference. The data is obtained with
the “Best Quality” settings. Differences between installations and material composition may cause
actual results to vary from those shown in the tables.
3-2 Duramax Retrofit Torch Operator Manual
Estimated kerf-width compensation – Metric (mm)
Thickness (mm)
Process
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
FineCut
85 A Unshielded
65 A Unshielded
45 A Unshielded
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
FineCut
85 A Unshielded
65 A Unshielded
45 A Unshielded
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
85 A Unshielded
65 A Unshielded
45 A Unshielded
0.51236810121620
1.71.81.92.02.22.42.6
1.71.71.81.81.82.02.3
1.61.61.81.92.02.22.3
1.41.41.61.61.71.81.9
1.11.11.41.51.7
0.70.71.31.3
1.71.81.92.02.12.12.3
1.61.61.71.81.92.0
0.50.91.31.3
Stainless Steel
1.61.81.92.12.32.42.5
1.71.71.81.81.92.12.2
1.41.51.81.92.02.22.4
1.51.51.61.71.81.82.0
0.91.11.51.61.8
0.60.61.41.5
1.71.71.81.92.12.22.4
1.61.61.81.81.92.0
0.51.01.31.51.5
Aluminum
2.01.92.02.12.22.42.6
1.71.71.71.81.81.8
1.91.91.92.02.12.32.5
1.51.51.51.51.61.61.6
1.51.51.61.5
1.91.91.92.02.02.12.2
1.81.81.81.81.92.0
1.61.51.41.5
OPERATION
Mild Steel
2.02.12.22.22.32.7
1.91.92.02.12.22.3
2.12.12.12.12.12.3
Duramax Retrofit TorchOperator Manual3-3
OPERATION
Estimated kerf-width compensation – English (inches)
Thickness (inches)
Process
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
FineCut
85 A Unshielded
65 A Unshielded
45 A Unshielded
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
FineCut
85 A Unshielded
65 A Unshielded
45 A Unshielded
100 A Shielded
85 A Shielded
80 A Shielded
65 A Shielded
60 A Shielded
45 A Shielded
85 A Unshielded
65 A Unshielded
45 A Unshielded
22 GA18 GA14 GA10 GA3/161/43/81/25/83/4
Mild Steel
0.0680.0710.0730.0780.0900.0950.100
0.0680.0680.0710.0730.0780.088
0.0620.0650.0680.0700.0760.0880.0900.091
0.0550.0570.0600.0630.0670.0710.0760.084
0.0350.0540.0550.0610.0650.066
0.0240.0430.0490.051
0.0700.0730.0750.0800.0850.090
0.0620.0640.0660.0680.0750.081
0.0200.0500.0510.0540.0570.059
Stainless Steel
0.0680.0710.0730.0780.0900.0950.100
0.0620.0650.0680.0700.0760.0880.0900.091
0.0350.0540.0550.0610.0650.066
0.0240.0430.0490.051
0.0700.0730.0750.0800.0850.090
0.0620.0640.0660.0680.0750.081
0.0200.0500.0510.0540.0570.059
Aluminum
1/321/161/83/161/43/81/25/83/4
0.0800.0780.0750.0800.0900.0950.100
0.0690.0650.0720.0690.075
0.0730.0740.0750.0760.0830.0910.100
0.0640.0610.0570.0610.0630.065
0.0590.0610.0650.060
0.0750.0750.0750.0800.0820.088
0.0700.0700.0700.0700.0720.079
0.0620.0580.0570.061
0.0790.0850.0850.0890.107
0.0740.0790.0830.0870.090
0.0660.0720.0770.0820.088
0.0650.0690.0730.0800.088
0.0830.0850.0800.0840.089
3-4 Duramax Retrofit Torch Operator Manual
100 amp mechanized shielded cutting for Powermax1650
1
0
0
A
OPERATION
220993
Shield
220993
Shield
220854
Retaining cap
220953
Ohmic‑sensing
220990
Nozzle
1
0
0
A
220990
Nozzle
220842
Electrode
220842
Electrode
220994
Swirl ring
220994
Swirl ring
retaining cap
•Recommended cut speeds are a good starting point for finding the best quality cut (best
angle, least dross, and best cut‑surface finish). Adjust the speed for your application and
table to obtain the desired cut quality.
•Maximum cut speeds are the fastest speeds possible to cut material without regard to cut
quality.
Duramax Retrofit TorchOperator Manual3-5
OPERATION
Note:Torch‑to‑work dis tance for the following cut chart is 1/8 in (3.2 mm) for all cuts.
Mild steel
Recommended cut
speed
Recommended cut
speed
Maximum cut speed
Maximum cut speed
Arc current Arc voltage
1530.51/46.413534292085283
1550.53/89.57719551193022
1591.01/212.7571447882235
100
1601.05/815.9401016611549
1611.53/419.026660471193
163
1671 1/431.81230519482
Stainless steel
Arc current Arc voltage
1540.51/46.415038102315867
1560.53/89.57920061223099
1611.01/212.7521320792006
100
1621.05/815.934863521320
1641.53/419.02563539990
166
1691 1/431.8922814355
Pierce
delay
NA
Pierce
delay
NA
Material thickness
inmmipmmm/minipmmm/min
125.41845728711
Material thickness
inmmipmmm/minipmmm/min
125.41538123584
Aluminum
Recommended cut
speed
Maximum cut speed
Arc current Arc voltage
1540.51/46.416441652536426
1570.53/89.59223361423606
1601.01/212.77017781082743
100
1611.05/815.9501270771955
1621,53/419.033838571447
165NA125.42153333838
Pierce
delay
Material thickness
inmmipmmm/minipmmm/min
3-6 Duramax Retrofit Torch Operator Manual
85 amp mechanized shielded cutting for Powermax1650
8
5
A
OPERATION
220817
Shield
220817
Shield
220854
Retaining cap
220953
Ohmic‑sensing
retaining cap
220816
Nozzle
8
5
A
220816
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-7
OPERATION
85 A Shielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
3
40.256501227300122
6
825001253100127
1016801272070128
12
161.0870134930133
206.04001.5570137680136
25
30200146300144
Torch-
to-Work
Distance
1.5
Initial Pierce
Height
3.8250
4.5300
Edge Start
Pierce
Delay Time
0.168001229200120
0.5
0.712801301600130
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
36001234400125
350142450141
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
10 GA
3/160.2185123220123
1/4
3/87012686127
1/2
5/81.03513437133
3/40.244001.52413629135
7/8
11314217141
1‑1/8914513143
1‑1/4714810146
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
0.15250
0.18300
Edge Start
Pierce
Delay Time
0.0250122336121
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
130123160126
4513156131
1913922138
3-8 Duramax Retrofit Torch Operator Manual
OPERATION
85 A Shielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
3
40.261001227500120
6
824501243050124
10
120.711001311400130
161.0700135760134
20
25300143370141
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
10 GA
3/16200122240121
1/4
3/86512680125
1/2
5/81.02813530134
3/4
7/81614019139
11114314141
Torch-
to-Work
Distance
1.5
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
3.8250
4.5300
Edge Start
Initial Pierce
Height
0.15250
0.18300
Edge Start
Pierce
Delay Time
0.175001229200120
0.5
Pierce
Delay Time
0.2
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
37001224600122
15501271900126
480138570137
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
275122336120
130122164122
3613248131
2013724136
Duramax Retrofit TorchOperator Manual3-9
OPERATION
85 A Shielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
3
40.265001238000123
6
826501303470129
10
120.714501341930133
161.09501391200137
20
25380146540144
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/8
1/4
3/880132104131
1/2
5/81.03813948137
3/4
7/82014429142
11414620144
Torch-
to-Work
Distance
1.5
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
3.8250
4.5300
Edge Start
Initial Pierce
Height
0.15250
0.18300
Edge Start
Pierce
Delay Time
0.180001229400121
0.5
Pierce
Delay Time
0.2300122360121
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
38001264900126
19201322500131
600143880141
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
130127172127
5013568133
2514237140
3-10 Duramax Retrofit Torch Operator Manual
80 amp mechanized shielded cutting for Powermax1250/1650
8
5
A
OPERATION
220817
Shield
220817
Shield
220854
Retaining cap
220953
Ohmic‑sensing
retaining cap
220816
Nozzle
8
5
A
220816
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Recommended cut speeds are a good starting point for finding the best quality cut (best
angle, least dross, and best cut‑surface finish). Adjust the speed for your application and
table to obtain the desired cut quality.
•Maximum cut speeds are the fastest speeds possible to cut material without regard to cut
quality.
Duramax Retrofit TorchOperator Manual3-11
OPERATION
Note:Torch‑to‑work dis tance for the following cut chart is 1/16 in (1.5 mm) for all cuts.
Mild steel
Recommended
cutspeed
Recommended
cutspeed
Maximum cut speed
Maximum cut speed
ipmmm/minipmmm/min
Arc current Arc voltage
1320.253/164.814035562165486
134
1373/89.5611549942388
80
1401/212.739991601524
1451.05/815.926660401016
148
1507/822.21538123584
156125.41025416406
Stainless steel
Arc current Arc voltage
1340.253/164.814035562165486
1360.501/46.410326161584013
139
80
1421/212.733838501270
1451.05/815.92255934864
150
153125.4922914356
Pierce
delay
0.50
N/A
Pierce
delay
0.75
N/A
Material thickness
inmmipmmm/minipmmm/min
1/46.410526671614089
3/419.02050831787
Material thickness
inmm
3/89.5541372832108
3/419.01640624610
Aluminum
Recommended
cutspeed
Maximum cut speed
Arc current Arc voltage
134
1391/46.411428961764470
80
143
1461/212.737940751905
154N/A3/419.01948337940
Pierce
delay
0.25
0.75
Material thickness
inmmipmmm/minipmmm/min
1/83.2295749345411532
3/89.56015241213073
3-12 Duramax Retrofit Torch Operator Manual
65 amp mechanized shielded cutting for Powermax1250/1650
6
5
A
OPERATION
220817
Shield
220817
Shield
220854
Retaining cap
220953
Ohmic‑sensing
retaining cap
220819
Nozzle
6
5
A
220819
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-13
OPERATION
65 A Shielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.252001256100123
4
625501273240127
817001292230128
10
121.28501341140131
166.04002.0560138650136
20
25210145270145
Torch-
to-Work
Distance
1.5
Initial Pierce
Height
3.8250
4.5300
Edge Start
Pierce
Delay
Time
0.160501247000121
0.5
0.711001311500129
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
42501255100124
350142450142
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
16 GA
10 GA190125224123
3/160.2140126168125
1/40.590127116127
3/80.74513062129
1/20.183001.23013540132
5/80.244002.02313826136
3/4
7/81214314143
1814510145
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
0.15250
Edge Start
Pierce
Delay
Time
0.1
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
260123294121
1514119141
3-14 Duramax Retrofit Torch Operator Manual
OPERATION
65 A Shielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.267001258260123
4
624501262850126
8
10
121.2750135920134
16
20300143370143
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
16 GA
10 GA240125296123
3/160.2155126168125
1/40.58012696126
3/80.74013152131
1/20.183001.22613632135
5/8
3/41414215142
Torch-
to-Work
Distance
1.5
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
3.8250
4.5300
Edge Start
Initial Pierce
Height
0.15250
Edge Start
Pierce
Delay Time
0.1810012510000121
0.5
0.7
Pierce
Delay Time
0.1
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
52001256150124
15001291860129
9601321250132
500139500139
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
345124426121
2013920139
Duramax Retrofit TorchOperator Manual3-15
OPERATION
65 A Shielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.274001248800124
4
632001304400128
8
10
121.210001381330136
16
20380147560145
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/16
1/8280124336124
1/40.5105131152128
3/80.75013568131
1/20.183001.23513948138
5/8
3/41614624144
Torch-
to-Work
Distance
1.5
Torch-
to-Work
Distance
0.06
Initial Pierce
Height
3.8250
4.5300
Edge Start
Initial Pierce
Height
0.15250
Edge Start
Pierce
Delay
Time
0.1880012110300122
0.5
0.7
Pierce
Delay
Time
0.1
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
60001267350125
19501332750130
12001361650132
650143800141
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
365121428121
2614332141
3-16 Duramax Retrofit Torch Operator Manual
OPERATION
60 amp mechanized shielded cutting for Powermax1000/1250/1650
6
5
A
220817
Shield
220817
Shield
220854
Retaining cap
220953
Ohmic‑sensing
retaining cap
220819
Nozzle
6
5
A
220819
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Recommended cut speeds are a good starting point for finding the best quality cut (best
angle, least dross, and best cut‑surface finish). Adjust the speed for your application and
table to obtain the desired cut quality.
•Maximum cut speeds are the fastest speeds possible to cut material without regard to cut
quality.
Duramax Retrofit TorchOperator Manual3-17
OPERATION
Note:Torch‑to‑work dis tance for the following cut chart is 1/16 in (1.5 mm) for all cuts.
Mild steel
Recommended
cutspeed
Recommended
cutspeed
Maximum cut speed
Maximum cut speed
ipmmm/minipmmm/min
Arc current Arc voltage
134
13410 Ga3.421153592646706
1380.251/46.48621841323353
60
1410.753/89.5411041631600
141
1475/815.92051231787
1533/419.01436322559
Stainless steel
Arc current Arc voltage
134016 Ga1.54061031262515875
1360.2510 Ga3.415940392446198
1390.501/46.47218291102794
60
1450.753/89.534864531346
146
1495/815.91742926660
1543/419.01229718457
Pierce
delay
0
1.50
Pierce
delay
2.00
Material thickness
inmmipmmm/minipmmm/min
16 Ga1.55021275162715926
1/212.727686421067
Material thickness
inmm
1/212.72358435889
Aluminum
Recommended
cutspeed
Maximum cut speed
Arc current Arc voltage
13501/161.64331099566616916
138
1411/46.49423881453683
60
1460.753/89.5481219741880
149
1535/815.92154533838
Pierce
delay
0.25
1.50
Material thickness
inmmipmmm/minipmmm/min
1/83.2260660440010160
1/212.730762511295
3-18 Duramax Retrofit Torch Operator Manual
OPERATION
45 amp mechanized shielded cutting for Powermax1000/1250/1650
4
5
A
220817
Shield
220817
Shield
220854
Retaining cap
220953
Ohmic‑sensing
retaining cap
220941
Nozzle
4
5
A
220941
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-19
OPERATION
45 A Shielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
0.5
1900012810800128
1.50.1900013010200129
20.366001307800129
3
422001343560131
60.513501372050132
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
26 GA
22 GA350128450128
18 GA
16 GA350130400129
14 GA
12 GA
10 GA100134164131
3/160.570135108132
1/40.64813773132
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.020.08400
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay Time
0.0
0.4
Pierce
Delay Time
0.0
0.1
0.2270130320129
0.4
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
900012812500126
38501334900131
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
350128500128
350129400128
190133216131
3-20 Duramax Retrofit Torch Operator Manual
OPERATION
45 A Shielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
0.5
1900013010800130
1.50.1900013010200130
20.360001328660131
3
420001342600134
60.59001401020139
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
26 GA
22 GA350130450129
18 GA
16 GA350130400130
14 GA
12 GA
10 GA100133134134
3/160.55213558135
1/40.63014135140
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.020.08400
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay Time
0.0
0.4
Pierce
Delay Time
0.0
0.1
0.2250132360131
0.4
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
900013012500129
31001324400132
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
350130500129
350130400130
140132206131
Duramax Retrofit TorchOperator Manual3-21
OPERATION
45 A Shielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
1
20.166001369200135
30.231001396250134
40.422001414850135
60.515001422800137
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/32
1/160.1325136400136
3/320.2200136328134
1/80.4100140224134
1/40.55414296137
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay Time
0.0825013611000136
Pierce
Delay Time
0.0325136450136
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
3-22 Duramax Retrofit Torch Operator Manual
100 amp mechanized unshielded cutting for Powermax1650
1
0
0
A
OPERATION
220955
Deflector
220854
Retaining cap
220990
Nozzle
220842
Electrode
220994
Swirl ring
•Recommended cut speeds are a good starting point for finding the best quality cut (best
angle, least dross, and best cut‑surface finish). Adjust the speed for your application and
table to obtain the desired cut quality.
•Maximum cut speeds are the fastest speeds possible to cut material without regard to cut
quality.
Duramax Retrofit TorchOperator Manual3-23
OPERATION
Note:Torch‑to‑work dis tance for the following cut chart is 3/16 in (4.8 mm) for all cuts.
85 amp mechanized unshielded cutting for Powermax1650
8
5
A
OPERATION
220955
Deflector
220854
Retaining cap
220816
Nozzle
220842
Electrode
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-25
OPERATION
85 A Unshielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.162401189000117
40.252501187200117
6
824001213100121
1015601232070122
126.03000.712001261600124
16
20540137640132
25320143400137
Torch-
to-Work
Distance
2.0
Initial Pierce
Height
5.0250
Edge Start
Pierce
Delay
Time
0.0715011710400116
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
34501204400119
820132930128
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
14 GA
10 GA
3/16175119220118
1/4
3/86512286122
1/20.243000.64212756125
5/8
3/42313627131
7/81814021134
11214415138
Torch-
to-Work
Distance
0.08
Initial Pierce
Height
0.20250
Edge Start
Pierce
Delay
Time
0.1280117416116
0.2
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
230118328117
125120160119
3313137128
3-26 Duramax Retrofit Torch Operator Manual
OPERATION
85 A Unshielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
370001189660117
40.256001187800118
6
822501212970122
10
120.710001291340128
16
20360138570137
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
14 GA
10 GA
3/16180119249119
1/4
3/86012277123
1/20.243000.63513146129
5/8
3/41713724136
Torch-
to-Work
Distance
2.0
Torch-
to-Work
Distance
0.08
Initial Pierce
Height
5.0250
6.0300
Edge Start
Initial Pierce
Height
0.20250
Edge Start
Pierce
Delay
Time
0.1
0.5
0.514301231840124
Pierce
Delay
Time
0.1340117452116
0.2
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
855011711300116
34001204570121
650134730133
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
250118352118
120120160121
2613429133
Duramax Retrofit TorchOperator Manual3-27
OPERATION
85 A Unshielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
373501209600119
40.260001228100120
6
823501273250124
10
120.713001331720130
16
20470144700138
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/8
3/16200123271120
1/4
3/87512788126
1/20.243000.64513562131
5/8
3/42214332137
Torchto-Work
Distance
2.0
Torchto-Work
Distance
0.08
Initial Pierce
Height
5.0250
6.0300
Edge Start
Initial Pierce
Height
0.20250
Edge Start
Pierce
Delay Time
0.1
0.5
0.518001282140127
Pierce
Delay Time
0.2
0.5
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
870011811200118
33001254930122
8401391130134
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
280120368119
110126172122
3413945134
3-28 Duramax Retrofit Torch Operator Manual
OPERATION
65 amp mechanized unshielded cutting for Powermax1250/1650
6
5
A
220955
Deflector
220854
Retaining cap
220819
Nozzle
220842
Electrode
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-29
OPERATION
65 A Unshielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.252001186330118
4
625501203560120
816201232230121
106.03000.79701271500122
12
16500134650129
20280138400133
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
16 GA
10 GA190118232118
3/160.2135119172119
1/40.590120116120
3/80.243000.74012662122
1/2
5/82013426129
3/41313718132
Torch-
to-Work
Distance
2.0
Torch-
to-Work
Distance
0.08
Initial Pierce
Height
5.0250
Edge Start
Initial Pierce
Height
0.20250
Edge Start
Pierce
Delay Time
0.160501177340117
0.5
Pierce
Delay Time
0.1
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
42501185250118
7601291140124
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
255116308117
2713040125
3-30 Duramax Retrofit Torch Operator Manual
OPERATION
65 A Unshielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.266001188500117
4
623001213070121
80.714001231900122
106.03000.79201261250123
12
16430135500133
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
16 GA
10 GA235118304118
3/160.2150120194120
1/40.575121100121
3/80.243000.73812552122
1/2
5/81713520133
Torch-
to-Work
Distance
2.0
Torch-
to-Work
Distance
0.08
Initial Pierce
Height
5.0250
Edge Start
Initial Pierce
Height
0.20250
Edge Start
Pierce
Delay Time
0.1795011710300116
0.5
Pierce
Delay Time
0.1
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
50501196500119
710130925127
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
340116437115
2513232129
Duramax Retrofit TorchOperator Manual3-31
OPERATION
65 A Unshielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
2
30.265501249500123
4
630001273900126
80.718001302460127
106.03000.711001331640129
12
16600139700136
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/16
Torch-
to-Work
Distance
2.0
Torch-
to-Work
Distance
Initial Pierce
Height
5.0250
Edge Start
Initial Pierce
Height
Pierce
Delay Time
0.1775012311300122
0.5
Pierce
Delay Time
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
54001257640124
9001351250133
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
325122476122
1/8250124360123
3/16175125245124
1/40.5100127128126
3/80.243000.74513268128
1/2
5/82413828136
0.08
0.20250
Edge Start
0.1
3213644134
3-32 Duramax Retrofit Torch Operator Manual
OPERATION
45 amp mechanized unshielded cutting for Powermax1000/1250/1650
4
5
A
220955
Deflector
220854
Retaining cap
220941
Nozzle
220842
Electrode
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
•Production Settings (cut speed and voltage) — 80% of the maximum speed ratings. These
speeds result in the greatest number of cut parts, but not necessarily the best possible cut
quality.
Duramax Retrofit TorchOperator Manual3-33
OPERATION
45 A Unshielded
Mild Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
0.5
1900012010800121
1.50.1770012010200121
20.361501197800122
3
423501233560124
60.514001262050124
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
26 GA
22 GA350120450120
18 GA
16 GA300121400121
14 GA0.2250119320122
12 GA
10 GA100123164124
3/160.585122108124
1/40.64812773124
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay Time
0.0
0.4
Pierce
Delay Time
0.0
0.1
0.4
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
900012012500120
39501214900123
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
350120500120
350119400121
200120216123
3-34 Duramax Retrofit Torch Operator Manual
OPERATION
45 A Unshielded
Stainless Steel
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
0.5
1900012110800119
1.50.1900012110200120
20.360001229600120
3
419001283000122
60.57001301450124
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
26 GA
22 GA350120450119
18 GA
16 GA350121400120
14 GA
12 GA
10 GA100125140121
3/160.54213188123
1/40.62513048124
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.020.08400
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay
Time
0.0
0.4
Pierce
Delay
Time
0.0
0.1
0.2300122400120
0.4
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
900012112500119
32501234750120
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
350120500119
350118400119
150121224120
Duramax Retrofit TorchOperator Manual3-35
OPERATION
45 A Unshielded
Aluminum
Metric
Material
Thickness
mmmmmm%secondsmm/minVoltsmm/minVolts
1
20.144001279200123
30.228001296250125
40.421001324700126
60.510501352250127
English
Material
Thickness
ininin%secondsipmVoltsipmVolts
1/32
1/160.1200126400122
3/320.2150127328124
1/80.4100130224125
1/40.53613672127
Torch-
to-Work
Distance
1.53.8250
Torch-
to-Work
Distance
0.060.15250
Initial Pierce
Height
Initial Pierce
Height
Pierce
Delay
Time
0.0740012611000121
Pierce
Delay
Time
0.0325126450121
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
Best Quality SettingsProduction Settings
Cut SpeedVoltageCut SpeedVoltage
3-36 Duramax Retrofit Torch Operator Manual
FineCut® consumables for Powermax1000/1250/1650
Note:The cut charts in this section apply to both shielded and unshielded consumables
OPERATION
220948
Shield
220955
Deflector
220953
Retaining cap
220854
Retaining cap
220930
Nozzle
220930
Nozzle
220842
Electrode
220842
Electrode
220857
Swirl ring
220857
Swirl ring
•Best Quality Settings (cut speed and voltage) — Settings that provide the starting point
for finding the best cut quality (best angle, least dross, best cut‑surface finish). Adjust the
speed for your application and table to obtain the desired result.
Duramax Retrofit TorchOperator Manual3-37
OPERATION
FineCut
Mild Steel
Metric
Material
Thickness
mmAmmmm%secondsmm/minVolts
0.5
0.6825078
0.80.1825078
1
1.5
2480078
30.5275078
40.6190078
English
Material
Thickness
26 GA
24 GA32578
22 GA
20 GA32578
18 GA
16 GA
14 GA20078
12 GA
10 GA9578
Amps
40
45
Amps
Ainin%secondsipmVolts
40
45
Torch-
to-Work
Distance
1.52.25150
Torch-
to-Work
Distance
0.060.09150
Initial Pierce
Height
Initial Pierce
Height
Pierce Delay
Time
0.0
0.2825078
0.4
Pierce Delay
Time
0.0
0.1
0.232578
0.4
0.5
Best Quality Settings
Cut SpeedVoltage
825078
640078
Best Quality Settings
Cut SpeedVoltage
32578
32578
25078
12078
3-38 Duramax Retrofit Torch Operator Manual
FineCut
Stainless Steel
Metric
Material
Thickness
mmAmmmm%secondsmm/minVolts
0.5
0.6825068
0.80.1825068
1
1.5
2480071
30.5255080
40.6105080
English
Material
Thickness
26 GA
24 GA32568
22 GA
20 GA32568
18 GA
16 GA
14 GA20070
12 GA0.512080
10 GA0.67580
Amps
40
45
Amps
Ainin%secondsipmVolts
40
45
Torch-
to-Work
Distance
0.52.0400
Torch-
to-Work
Distance
0.020.08400
Initial Pierce
Height
Initial Pierce
Height
Pierce Delay
Time
0.0
0.15825068
0.4
Pierce Delay
Time
0.0
0.1
0.232568
0.4
Best Quality Settings
Cut SpeedVoltage
825068
615070
Best Quality Settings
Cut SpeedVoltage
32568
32568
24070
OPERATION
Duramax Retrofit Torch Operator Manual3-39
OPERATION
Low Speed FineCut
Mild Steel
Metric
Material
Thickness
mmAmmmm%seconds(mm/min)Volts
0.5
0.6380068
0.80.1380070
1 *
1.5 *
2
30.5275078
40.6190078
English
Material
Thickness
26GA
24GA15068
22GA
20GA15071
18GA *
16GA *
14GA
12GA
10GA9578
Amps
30
40
45
Amps
Ainin%secondsipmVolts
30
40
45
Torch-
to-Work
Distance
1.52.25150
Torch-
to-Work
Distance
0.060.09150
Initial Pierce
Height
Initial Pierce
Height
Pierce Delay
Time
0
0.2380072
0.4
Pierce Delay
Time
0.0
0.1
0.215073
0.4
0.5
Recommended
Cut SpeedVoltage
380069
380075
370076
Recommended
Cut SpeedVoltage
15070
15070
15075
15076
12078
Note: *Not a dross‑free cut.
3-40 Duramax Retrofit Torch Operator Manual
Low Speed FineCut
Stainless Steel
Metric
Material
Thickness
mmAmmmm%seconds(mm/min)Volts
0.5
0.6380069
0.80.1380069
1
1.5
2275069
3
40.6105080
English
Material
Thickness
26GA
24GA15069
22GA
20GA15069
18GA
16GA
14GA11069
12GA
10GA0.67580
Amps
30
40
45
Amps
Ainin%secondsipmVolts
30
40
45
Torch-
to-Work
Distance
0.52.0400
Torch-
to-Work
Distance
0.020.08400
Initial Pierce
Height
Initial Pierce
Height
Pierce Delay
Time
0
0.15380069
0.4
0.5255080
Pierce Delay
Time
0.0
0.1
0.214569
0.4
0.512080
Recommended
Cut SpeedVoltage
380069
290069
Recommended
Cut SpeedVoltage
15069
15069
11569
OPERATION
Duramax Retrofit Torch Operator Manual3-41
OPERATION
Using the hand torch
WARNING
INSTANTON TORCHES
PLASMA ARC CAN CAUSE INJURY AND BURNS
Plasma arc comes on im me di ate ly when the torch trigger is activated.
The plasma arc will cut quickly through gloves and skin.
• Wear correct and appropriate protective equipment.
• Keep away from the torch tip.
• Do not hold the workpiece and keep your hands clear of the cutting path.
• Never point the torch toward yourself or others.
Operate the safety trigger
The hand torches are equipped with a safety trigger to prevent accidental firings. When you are
ready to use the torch, flip the trigger’s safety cover forward (toward the torch head) and press
the red torch trigger as show below.
1
2
3
3-42 Duramax Retrofit Torch Operator Manual
OPERATION
Hand torch cutting hints
•Drag the torch tip lightly along the workpiece to maintain a steady cut.
•While cutting, make sure that sparks exit from the bottom of the workpiece. The sparks
should lag slightly behind the torch as you cut (15° — 30° angle from vertical).
•If sparks spray up from the workpiece, move the torch more slowly, or set the output
current higher.
•With hand torches, hold the torch nozzle
perpendicular to the workpiece so that the
nozzle is at a 90° angle to the cutting surface.
Observe the cutting arc as the torch cuts.
90°
•If you fire the torch unnecessarily, you will
shorten the life of the nozzle and electrode.
•Pulling, or dragging, the torch along the cut is easier than pushing the torch.
•For straight‑line cuts, use a straight edge as a guide. To cut circles, use a template or a
radius cutter attachment (a circle cutting guide). See Section 4, Maintenance and Parts,
for part numbers for the Hypertherm plasma cutting guides for cutting circles and making
bevel cuts.
Duramax Retrofit TorchOperator Manual3-43
OPERATION
Start a cut from the edge of the workpiece
1. With the work clamp attached to
the workpiece, hold the torch nozzle
perpendicular (90°) to the edge of the
workpiece.
2. Press the torch’s trigger to start the arc.
Pause at the edge until the arc has cut
completely through the workpiece.
3. Drag the torch tip lightly across the
workpiece to proceed with the cut.
Maintain a steady, even pace.
3-44 Duramax Retrofit Torch Operator Manual
Pierce a workpiece
SPARKS AND HOT METAL CAN INJURE EYES AND BURN SKIN. When
firing the torch at an angle, sparks and hot metal will spray out from the
nozzle. Point the torch away from yourself and others.
1. With the work clamp attached to the
workpiece, hold the torch at an approximate
30° angle to the workpiece with the
torch tip within 1/16 inch (1.5 mm) of the
workpiece before firing the torch.
OPERATION
WARNING
2. Fire the torch while still at an angle to the
workpiece. Slowly rotate the torch to a
perpendicular (90°) position.
3. Hold the torch in place while continuing to
press the trigger. When sparks exit below
the workpiece, the arc has pierced the
material.
4. When the pierce is complete, dragthe
nozzle lightly along the workpiece to
proceed with the cut.
Duramax Retrofit TorchOperator Manual3-45
OPERATION
Gouge a workpiece
WARNING
SPARKS AND HOT METAL CAN INJURE EYES AND BURN SKIN. When firing
the torch at an angle, sparks and hot metal will spray out from the nozzle.
Point the torch away from yourself and others.
1. Hold the torch so that the torch tip is within 1/16 inch (1.5 mm) from the workpiece before
firing the torch.
2. Hold the torch at a 45° angle to the
workpiece with a small gap between the
torch tip and the workpiece. Press the
trigger to obtain a pilot arc. Transfer the arc
45°
to the work piece.
3. Maintain an approximate 45° angle to the
workpiece as you feed into the gouge. Push
the plasma arc in the direction of the gouge
you want to create. Keep a small distance
between the torch tip and the molten
Di rec tion of travel
metal to avoid reducing consumable life or
damaging the torch.
Changing the torch’s angle changes the
dimensions of the gouge.
3-46 Duramax Retrofit Torch Operator Manual
OPERATION
Gouge profile
You can vary the gouge profile by varying the speed of the torch over the workpiece, varying the
torch‑to‑work standoff distance, varying the angle of the torch to the workpiece, and varying the
current output of the power supply.
Width
0.26 in (6.6 mm)
Speed
Standoff
Angle
Typical Gouge Profile for 60A / 65A Operation
Depth
0.14 in (3.6 mm)
Operating parameters
Speed
Standoff
Angle
20‑25 ipm (50.8‑63.5 cm/min)
1/4‑3/8 in (6.4‑9.5 mm)
35‑40°
Typical Gouge Profile for 80A / 85A Operation
Width
0.28 in (7.1 mm)
Depth
0.24 in (6.1 mm)
Operating parameters
Speed
Standoff
Angle
20‑25 ipm (50.8‑63.5 cm/min)
1/4‑3/8 in (6.4‑9.5 mm)
35‑40°
Duramax Retrofit TorchOperator Manual3-47
OPERATION
Typical Gouge Profile for 100 A Operation
Width
0.29 in (7.4 mm)
Depth
0.25 in (6.4 mm)
Operating parameters
Speed
Standoff
Angle
20‑25 ipm (50.8‑63.5 cm/min)
1/4‑3/8 in (6.4‑9.5 mm)
35‑40°
Varying the gouge profile
The following actions have the stated effects on the gouge profile:
• Increasing the speed of the torch will decrease width and decrease depth.
• Decreasing the speed of the torch will increase width and increase depth.
• Increasing the standoff of the torch will increase width and decrease depth.
• Decreasing the standoff of the torch will decrease width and increase depth.
• Increasing the angle of the torch (more vertical) will decrease width and increase
depth.
• Decreasing the angle of the torch (less vertical) will increase width and decrease
depth.
• Increasing the current of the power supply will increase width and increase depth.
• Decreasing the current of the power supply will decrease width and decrease
depth.
3-48 Duramax Retrofit Torch Operator Manual
OPERATION
Common hand-cutting faults
The torch does not cut completely through the workpiece. The causes can be:
•The cut speed is too fast.
•The consumables are worn.
•The metal being cut is too thick for the selected amperage.
•Gouging consumables are installed instead of drag‑cutting consumables.
•The work clamp is not attached properly to the workpiece.
• The gas pressure or gas flow rate is too low.
Cut quality is poor. The causes can be:
•The metal being cut is too thick for the amperage.
•The wrong consumables are being used (gouging consumables are installed instead of
drag‑cutting consumables, for example).
•You are moving the torch too quickly or too slowly.
The arc sputters and consumables life is shorter than expected. The cause can be:
•Moisture in the gas supply.
•Incorrect gas pressure.
•Consumables incorrectly installed.
Duramax Retrofit Torch Operator Manual3-49
OPERATION
Using the machine torch
Since the Powermax with a machine torch can be used with a wide variety of cutting tables, track
burners, pipe bevelers, and so on, you will need to refer to the manufacturer’s instructions for
specifics on operating the machine torch in your configuration. However, the information in the
following sections will help you optimize cut quality and maximize consumable life.
Ensure the torch and table are set up correctly
•Use a square to align the torch at right angles to the workpiece in two dimensions.
•The torch may travel more smoothly if you clean, check and “tune” the cutting table’s rails
and drive system. Unsteady machine motion can cause a regular, wavy pattern on the cut
surface.
•Ensure that the torch does not touch the workpiece during cutting. Contact with the
workpiece can damage the shield and nozzle and affect the cut surface.
Understand and optimize cut quality
There are several factors to consider in cut quality:
•Cut angle — The degree of angularity of the cut edge.
•Dross — The molten material that solidifies on the top or bottom of the workpiece.
•Straightness of the cut surface — The cut surface can be concave or convex.
The following sections explain how these factors can affect cut quality.
Cut or bevel angle
•A positive cut angle, or bevel, results when more material is removed from the top of the
cut than from the bottom.
•A negative cut angle results when more material is removed from the bottom of the cut.
3-50 Duramax Retrofit Torch Operator Manual
OPERATION
Problem
Negative cut angle
Square cut
Positive cut angle
Cause
The torch is too low.
The torch is too high.
Solution
Raise the torch; or if you are using a
torch height control, increase the arc
voltage.
Lower the torch; or if you are using a
torch height control, decrease the arc
voltage.
Note: The squarest cut angle will be on the right side with respect to the forward motion of
the torch. The left side will always have some degree of bevel.
To determine whether a cut‑angle problem is being caused by the plasma system or the drive
system, make a test cut and measure the angle of each side. Next, rotate the torch 90° in its holder
and repeat the process. If the angles are the same in both tests, the problem is in the drive system.
If a cut‑angle problem persists after “mechanical causes” have been eliminated (see “Ensure the
torch and table are set up correctly” on page 3‑49), check the torch‑to‑work distance, especially
if the cut angles are all positive or all negative. Also consider the material being cut: if the metal is
magnetized or hardened, you are more likely to experience cut angle problems.
Dross
Some amount of dross will always be present when cutting with air plasma. However, you can
minimize the amount and type of dross by adjusting your system correctly for your application.
Excess dross appears on the top edge of both pieces of the plate when the torch is too low (or
voltage is too low when using a torch height control). Adjust the torch or adjust the voltage in small
increments (5 volts or less) until the dross is reduced.
Low‑speed dross forms when the torch’s cutting speed is too slow and the arc angles ahead. It
forms as a heavy, bubbly deposit at the bottom of the cut and can be removed easily. Increase the
speed to reduce this type of dross.
Duramax Retrofit TorchOperator Manual3-51
OPERATION
High‑speed dross forms when the cutting speed is too fast and the arc angles behind. It forms
as a thin, linear bead of solid metal attached very close to the cut. It is more firmly attached to the
bottom of the cut than at low speed and is difficult to remove. To reduce high‑speed dross:
•Decrease the cutting speed.
•Decrease the torch‑to‑work distance.
Note: Dross is more likely to form on warm or hot metal than on cool metal. For example,
the first cut in a series of cuts usually produces the least dross. As the workpiece
heats up, more dross can accumulate on subsequent cuts.
Worn or damaged consumables may produce excess dross.
Straightness of the cut surface
A typical plasma cut surface is slightly concave.
The cut surface may become more concave, or convex. Correct torch height is required to keep
the cut surface acceptably close to straight. Worn consumables also affect the straightness of
the cut.
A strongly concave cut surface occurs when the torch‑to‑work distance is too low. Increase the
torch‑to‑work distance to straighten the cut surface.
A convex cut surface occurs when the torch‑to‑work distance is too great or the cutting current
is too high. First, try lowering the torch, then reduce the cutting current.
3-52 Duramax Retrofit Torch Operator Manual
OPERATION
To pierce a workpiece using the machine torch
As with the hand torch, you can start a cut with the machine torch at the edge of the workpiece or
by piercing the workpiece. Piercing will result in a shorter consumable life than with edge starts.
The pierce delay must be sufficiently long that the arc can pierce the material before the torch
moves, but not so long that the arc “wanders” while trying to find the edge of a large hole.
When piercing maximum thicknesses, the ring of dross that forms during the pierce may become
high enough to contact the torch when the torch begins to move after the pierce is complete.
Remove the dross if the torch will contact it during the cut.
Common machine-cutting faults
The torch’s pilot arc will initiate, but will not transfer. Causes can be:
•The work cable is not making good contact with the cutting table or the cutting table is not
making good contact with the workpiece.
•The torch‑to‑work distance is too large.
The workpiece is not totally penetrated, and there is excessive sparking on the top of the
workpiece. Causes can be:
•The consumables are worn and need to be replaced. For optimized performance in a
mechanized application, replace the nozzle and the electrode together.
•The work cable is not making good contact with the cutting table or the cutting table is not
making good contact with the workpiece.
•The current (amperage) is set too low. See “Using the cut charts” on page 3‑3 for more
information.
•The cut speed is too high. See “Using the cut charts” on page 3‑3 for more information.
•The metal being cut exceeds the maximum capacity for the selected amperage.
Duramax Retrofit Torch Operator Manual3-53
OPERATION
Dross forms on the bottom of the cut. Causes can be:
•The consumables are worn and need to be replaced. For optimized performance in a
mechanized application, replace the nozzle and the electrode together.
•The cutting speed is not correct. See “Using the cut charts” on page 3‑3 for more
information.
•The current (amperage) is set too low. See “Using the cut charts” on page 3‑3 for more
information.
The cut angle is not square. Causes can be:
•The torch is not square to the workpiece.
•The consumables are worn and need to be replaced. For optimized performance in a
mechanized application, replace the nozzle and the electrode together.
•The direction of the torch travel is incorrect. The high‑quality cut is always on the right with
respect to the forward motion of the torch.
•The distance between the torch and the workpiece is not correct.
•The cutting speed is not correct. See “Using the cut charts” on page 3‑3 for more
information.
The consumables’ life is shortened. Causes can be:
•The arc current, arc voltage, travel speed, and other variables are not set as recommended
in the cut charts.
•Firing the arc in the air (beginning or ending the cut off of the plate surface). Starting at the
edge is acceptable as long as the arc makes contact with the workpiece when started.
•Starting a pierce with an incorrect torch height. Refer to the cut charts for the specific
initial pierce height.
Inspect the consumables ................................................................................................................................. 4‑3
Hand torch replacement parts ........................................................................................................................ 4‑4
Machine torch replacement parts .................................................................................................................. 4‑6
Disconnect the electrical power before you perform any maintenance.
Allwork that requires removal of the power supply cover must be
performed by a qualified technician.
Every use:
AC
V
Check indicator lights and fault icons.
Correct any fault conditions.
Every 3 months:
DANGER
Inspect the
consumables for
proper installation
and wear.
Inspect the trigger for
damage. Inspect the torch
body for cracks and exposed
wires. Replace any damaged
Replace any damaged labels.
Inspect the power cord and
plug. Replace if damaged.
Every 6 months:
Or
Inspect the torch lead. Replace if damaged.
Clean the inside of the power supply
with compressed air or a vacuum.
parts.
4-2 Duramax Retrofit Torch Operator Manual
Inspect the consumables
PartInspectAction
Shield or
deflector
The center hole for
roundness.
MAINTENANCE AND pArTs
Replace the shield if the
hole is no longer round.
The gap between the
shield and the nozzle for
accumulated debris.
NozzleThe center hole for
roundness.
GoodWorn
ElectrodeReplace electrode if the
Max. 1/16 in (1.6 mm)
Swirl ringThe surface inside the swirl
ring for damage or wear and
the gas holes for blockages.
Torch o‑ringThe surface for damage,
wear, or a lack of lubrication.
Remove the shield and
clean away any material.
Replace nozzle if the
center hole is not
round.
surface is worn or the
pit depth is greater than
1/16 inch (1.6mm)
deep.
Replace swirl ring if the
surface is damaged or
worn or any of the gas
holes are blocked.
If the o‑ring is dry,
lubricate it and the
threads with a thin layer
of silicone lubricant. If
the o‑ring is worn or
damaged, replace it.
Duramax Retrofit TorchOperator Manual4-3
MAINTENANCE AND pArTs
Hand torch replacement parts
Duramax HRT
Torch handle
Coupler
Torch lead
Cap-sensor
switch
Pilot terminal
screw
Torch head
O-ring
Safety trigger and spring
The entire hand torch and lead assembly can be replaced, or individual component parts can be replaced.
Trigger start switch
Handle screws
Part
numberDescription
005252Trigger start switch
058519O-ring
075504Pilot terminal screw
075714Handle screws, #4 x 1/2 slotted TORX pan head, S/B
228954Kit: Duramax 75°/ HRT Torch handle replacement
228719Kit: Duramax 75°/HRT Cap-sensor switch replacement
228721Kit: Duramax 15°/Duramax 75°/HRT/HRTs Safety trigger with spring replacement
228952Kit: HRT/HRTs Torch lead replacement, 25 ft (7.6 m), coupler with 1/2 in. (12.7 mm) threads
in.
228953Kit: HRT/HRTs Torch lead replacement, 50 ft (15.2 m), coupler with 1/2
228788*Kit: HRT Hand torch assembly with 25 ft (7.6 m) lead
228789*Kit: HRT Hand torch assembly with 50 ft (15.2 m) lead
228792Kit: HRT Torch main body replacement, coupler with 3/8 in. (9.5 mm) threads
228950Kit: HRT Torch main body replacement, coupler with 1/2 in. (12.7 mm) threads
* The torch assembly also includes a variety of Duramax consumables.
(12.7 mm) threads
4-4 Duramax Retrofit Torch Operator Manual
Duramax HRTs
Torch head
O‑ring
MAINTENANCE AND pArTs
Torch handle
Coupler
Torch lead
Cap‑sensor
switch
Trigger start
switch
Pilot terminal screw
Safety trigger and spring
Handle screws
The entire hand torch and lead assembly can be replaced, or individual component parts can be replaced.
Part
numberDescription
005252Trigger start switch
058519O‑ring
075504Pilot terminal screw
075714Handle screws, #4 x 1/2 slotted TORX pan head, S/B
228955Kit: Duramax 15°/ HRTs Torch handle replacement
228109Kit: Duramax 15°/HRTs Cap‑sensor switch replacement
228721Kit: Duramax 15°/Duramax 75°/HRT/HRTs Safety trigger with spring replacement
228952Kit: HRT/HRTs Torch lead replacement, 25 ft (7.6 m), coupler with 1/2 in. (12.7 mm) threads
228953Kit: HRT/HRTs Torch lead replacement, 50 ft (15.2 m), coupler with 1/2 in. (12.7 mm) threads
228807*Kit: HRTs Hand torch assembly with 25 ft (7.6 m) lead
228808*Kit: HRTs Hand torch assembly with 50 ft (15.2 m) lead
228809Kit: HRTs Torch main body replacement, coupler with 3/8 in. (9.5 mm) threads
228951Kit: HRTs Torch main body replacement, coupler with 1/2 in. (12.7 mm) threads
* The torch assembly also includes a variety of Duramax consumables.
Duramax Retrofit TorchOperator Manual4-5
MAINTENANCE AND pArTs
Machine torch replacement parts
Duramax MRT
Mounting
Consumables
sleeve
Coupler
Positioning sleeve
Strain relief nut
Torch lead
O‑ring
Pilot wire
terminal screw
Torch head
Gear rack (32 pitch)
Front mounting ring
Cap‑sensor switch
Strain relief body
Wire connector for
cap‑sensor switch
4-6 Duramax Retrofit Torch Operator Manual
MAINTENANCE AND pArTs
The entire machine torch and lead assembly can be replaced, or individual component parts can
be replaced.
Part numberDescription
058519O‑ring
075504Pilot terminal screw
228720Kit: Cap‑sensor switch replacement
228735Kit: M65/M65m/M85/M85m/MRT front mounting sleeve
228736Kit: M65/M65m/M85/M85m/MRT adapter ring (coupler)
228737Kit: M65/M85/MRT positioning sleeve
228738Kit: M65/M85/MRT removable gear rack
228786Kit: MRT torch lead replacement, 25 ft (7.6 m)
228787Kit: MRT torch lead replacement, 50 ft (15.2 m)
228790*Kit: MRT Machine torch assembly with 25 ft (7.6 m) lead
228791*Kit: MRT Machine torch assembly with 50 ft (15.2 m) lead
228793Kit: MRT torch main body replacement
* The torch assembly also includes a variety of Duramax consumables.
Accessory parts
Part numberDescription
024548Leather torch sheathing, 25 ft (7.5 m)
127102Basic plasma (circles and lines) cutting guide
027668Deluxe plasma (circles and lines) cutting guide
Duramax Retrofit TorchOperator Manual4-7
MAINTENANCE AND pArTs
4-8 Duramax Retrofit Torch Operator Manual
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