Longevity ForceCut 62i User manual

Operating Manual
for
IGBT 60 Amp CNC Ready Plasma Cutter

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Table of Contents
Table of Content
Pg. 1
Thank you From LONGEVITY
Pg. 2
Warranty/Shipping Damage/Order Information
Pg. 3
Safety Information
Pg. 4-5
Specifications and Ratings
Pg. 6
What’s Included?
Pg. 7
Main Unit Knob/Button/Function Diagram
Pg. 8
Troubleshooting
Pg. 13
Routine Maintenance
Pg. 16
Contact Info
Pg.17
THANK YOU!
We, at LONGEVITY, want to thank you for purchasing our product. You are almost ready to
experience Longevity Welding first hand. Longevity definitely appreciates your business and
understand that this equipment may be overwhelming to setup and operate so we have prepared a
manual that will assist you in understand your new plasma cutter/welder. If you have any
questions during or after reading this manual, please feel to contact us! Please take a moment to
register your product on our website at www.longevity-inc.com or www.lweld.com

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Once again, thank you for choosing Longevity as your main welding supplier!
Longevity Global, Inc
23591 Foley St
Hayward, CA 94545
Toll-Free Customer Support: 1-877-LONG-INC / 1-877-566-4462
Website: www.longevity-inc.com
Sales: [email protected]
Customer Service: [email protected]
Dealers: [email protected]
Complaints: [email protected]
Please join our welding forums to share welding tips and tricks, to receive useful information
from customers who also use our products, and to be a part of the Longevity™ welding
community at www.freeweldingforum.com

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Warranty
LONGEVITY Plasma Cutters, Welders, and Multi-Purpose Welders are covered for specific Parts
and Labor warranty at our facility. For detailed information regarding your specific LONGEVITY
welder or cutter, please view our Terms and Policies page on our website at the following website
link: http://www.longevity-inc.com/terms/
Shipping Damage
Your machine is insured against damage during shipping. Keep all packing materials and containers
in case machine must be returned. We will initiate a claim with the shipping company to cover
damage or loss. If there is shipping damage upon opening your package, our customer service team
will work with you to get the matter resolved.
In Warranty Service
Customers, who own machines that are in warranty and require service, should contact our Warranty
Department by email at [email protected] to obtain a return authorization code. In addition to
the warranty we offer, we would like for you to register your product on our website at
www.longevity-inc.com/resources. Remember, warranty starts from the date of purchase. For your
convenience, write your order information below so you can track your order in case you need
warranty work.
Order No.: _________________________________
Date of Purchase: _____________________________
Warranty Period: ______________________________
Out-of-Warranty Service
Customers, who own machines that are out of warranty and require service, should contact us for an
estimate. Longevity offers an exchange program on out of warranty units. We also help non
LONGEVITY customers with repairs, replacement, and service.
If your unit is not manufactured by Longevity and you cannot receive service from your manufacturer or
seller, Longevity will lend out hand. Our warranty policy is also available for all plasma cutters and
welders. For more information, please email us at
[e-mail]

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Warnings and Safety
Welding and plasma cutting may be dangerous to the operator and to bystanders, if the
equipment is not operated properly. Welding or cutting must be performed in accordance
with all relevant safety regulations. Carefully read and understand this instruction manual
before installing and operating this equipment.
Changing function modes during welding may damage
equipment.
Before welding, disconnect the electrode-holder cable
from the equipment.
A circuit breaker is required to prevent electrical
overload of the equipment.
Only high quality welding tools should be used.
Electric Shock can be fatal.
Ensure that ground cable is connected in accordance with
applicable safety codes.
Never touch electrodes, wires, or circuit components with
bare hands. Wear dry welding gloves when welding.
The operator must be insulated from the work piece.
Smoke and gas can be harmful to health.
Ensure that the working area is well ventilated.
Avoid breathing smoke and gas generated during the
welding process. Cutting and welding can cause cancer
because of the smoke that comes from the welds and cuts.
Arc-light emission can be harmful to eyes and skin.
Always wear a welding helmet, anti-radiation glass, and
work clothes while welding.
Ensure that people in or near the working area are
protected.
Welding splash is a fire hazard.
Keep flammable material away from the work place.
Keep a fire extinguisher nearby, and have all personnel
trained in it’s use.
Surface noise generated while welding or cutting can be
harmful to hearing.
In the event of a machine fault.
Refer to this instruction manual.
If the fault cannot be determined, contact your local
dealer or supplier for assistance.

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Safety Tips
Consider the following tips to ensure safe operation of your welding/cutting equipment:
Ensure that this welding equipment is installed in an area free of corrosive chemical gases,
flammable gases or materials, and explosive chemicals.
The area should contain little dust, and have a humidity of no more than 80%.
Operate the welding equipment in an area sheltered from direct sunlight and precipitation.
Work area temperature should be maintained at -10C to +40C;
If, because of an overload, the machine suddenly stops, and it is necessary to restart it, leave
the internal fan operating to lower the inside temperature.
Always wear protective clothing and a welding mask to protect your skin.
Wear safety goggles designed to darken the arc generated by your machine.
Wear suitable noise protection to protect your hearing.
Ensure that machine is grounded through the power cord or on the machine case.
Never operate the machine in bare feet or on a wet floor.
Never switch the machine off while it’s in use. Doing so will damage the internal circuitry.
Ensure that your circuit breaker is rated to handle the current requirements of your machine.
Use a UL approved receptacles and plugs with your machine. Never hard wire the machine to
main power.
Work in a well ventilated area to avoid smoke. Keep your head out of the smoke. Ensure that
air is flowing away from you to avoid inhaling smoke.
Ensure proper ventilation through the machine’s louvers. Maintain a distance of at least
12 inches between this cutting equipment and any other objects in the work area.
Use a screen or curtain designed to keep passers by from viewing the arc.
The arc spray and metal spray from machine use may cause nearby fires. Use caution.
 If, after reviewing this manual, you have any problems in setting up or operating your
machine, contact us at [email protected].

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Techinical Specifications and Ratings
Rated input
Single-phase, 220V，50/60Hz
Rated input current
55 Amps
Rated input power（KW）
7.5 KW
Adjustment range of current（A）
20～60(220V)
Duty cycle（40℃，10 minutes）
95%(220V)
Max no-load voltage(V)
315 volts
Weight
48 lbs
Dimensions (Length*Width*Height)
27.5”L x 13.75”W x 20.5”H

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What’s Included?
1 20.5 ft PT-60 PLASMA CUTTING TORCH
1 16.5 FT GROUND CLAMP
1 AIR HOSE
2 EXTRA TIPS
2 EXTRA ELECTRODES

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Main Unit
Pictured: FORCECUT 62i Plasma Cutter
Main Unit Knob/Button/Function:
1. Power Light: The light will illuminate when the unit is powered on
2. Temperature /Over-Heat Light: When the duty cycle is reach, the TEMP will turn on.
Once it is safe to operate the machine, the light will turn off. If duty cycle is reached, allow
machine to run with the fan on to accelerate cooling.
3. Tip/Air Light
When adequate air pressure is reached, the Tip/Air light should turn on
4. Pilot/Voltage Light: The Pilot/Voltage light is illuminated when the machine is ready to
use.
5. Amperage Control Knob
3
2
7
8
9
1
4
5
6
13
12
11
10

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6. RUN/SET: When cutting the, turn the switch to “RUN”; when doing a gas test, turn to the
“SET”.
7. Cutting gun connector: Connector for the PT-60 plasma torch
8. CNC Port
9. Ground Clamp: Connect to the workpiece or a secure ground
10. Power Switch turns on or off the machine
11. Air Connector
12. Power Cable
13. Moister trap release

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Assembly of Consumables for the 60AMP Torch
Head
Assemble the consumables as pictured above, and described below.
1. Screw on the electrode.
2. Place the copper tip on the ring, ensuring that is seated flat.
3. Secure all parts into place by turning the grey shield cup clockwise until it is snug. Do not
over tighten.
The torch consumables are now successfully assembled.
Basic Operation
1. Ensure that all cables are connected to the machine.
2. Ensure that the machine’s OFF/ON switch is set to OFF, and plug the machine into the
electrical outlet.
3. Connect the air compressor supply line to the air input side on the unit.
4. Turn the ON/OFF switch to ON. The cooling fans should operate and the ON indicator LED
or power switch (if applicable) should illuminate.
5. Clean the contact point on the work piece to ensure a good electrical connection. Ensure that
no rust of paint is present that could create an open circuit.
6. Connect the ground clamp to the work piece to be cut.
7. Connect the torch to the unit properly.
8. With the pilot arc knob connected, you should get a full continuous arc when the trigger on
the torch is pressed.
9. Depress the button on your torch to start the arc and begin cutting.
10. You can test the air to insure that is it properly flowing by selecting Gas (Air) Test. Air will
pass through the torch.
11. If necessary remove slag from the under part of the cut using a grinder or chisel.

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LP- 40D
Cutting Guideline Table
Cutting Methods
Different material thicknesses require different cutting techniques.
Thin material: Start perpendicular to the work piece. It is unnecessary to angle or start
on the edge, as the arc will pass through quickly.
Medium material: Angle the torch tip to avoid damaging the tip. Once the arc passes
through the material, you may begin cutting normally.
Thick material: Drill a pilot hole through which to start your arc, or start on the edge of
the work piece.
Never cut material on a flat surface. Raise the work piece above the surface to avoid blow back
which may burn you or cause fires.
Real Time Arc-Curve Delay
When cutting thick materials you must maintain a steady even motion in the direction of the cut.
Moving the torch too quickly causes an arc-curve delay. An arc-curve delay can leave the work
piece with uncut sections, requiring you to re-cut those sections, which could distort or damage
the work piece.
To avoid arc-curve delay, allow the arc to pass completely through the work piece before moving
too far ahead. The arc-curve should lag not more than the thickness of the material being cut. In
other words, if the work piece is one-half inch thick, the arc curve should lag not more than one-
half inch behind the torch, as shown below.

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Troubleshooting
WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do not
attempt to diagnose or repair unless you have had training in power electronics
measurement and troubleshooting techniques.
A. The cutting torch fails to ignite the arc, when press on the torch switch, the
TIP/GUN/GAS light on.
1. Gas pressure too high, gas test then adjust gas pressure to 4bar/60psi.
B. The cutting torch fails to ignite the arc, when the torch switch is pressed; the
TIP/GUN/GAS lamp turns on.
1. The shield cup is improperly installed. Turn off the power source, install the shield cup
properly, and then turn on the power source.
C. The cutting torch fails to ignite the arc, when press on the torch switch, the
TIP/GUN/GAS lamp on and air feed intermittently.
1.The electrode or nozzle improper installation, turn off the power source, install the electrode or
nozzle, and screw shield cup down properly, then turn on the power source.
D .The cutting torch fail to ignite the arc, when press on the torch switch, the
TIP/GUN/GAS lamp on and air feed intermittently.
1. Short-circuit for burned-out and other abnormal situation, turn off the power source, and
change the electrode and nozzle.

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E. Power lamp and temperature lamp on.
1. Air flow blocked, check for blocked air flow around the unit and correct condition.
2. Fan blocked, check and correct condition.
3. Unit is overheated, let unit cool down for at least 5 minutes. Make sure the unit has not been
operated beyond Duty Cycle limit, refer to technology parameters in Section 2.
4. Faulty components in unit, return for repair or have qualified technician repair per Service
Manual.
F. Torch fails to ignite the arc when torch switch is activated
1. System is in SET mode，change to RUN mode.
2. Faulty torch parts, inspect torch parts and replace if necessary.
3. Gas pressure too high or too low, adjust to proper pressure.
4. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
G. No cutting output; Torch activated, power source on; Gas flows; Fan
operates
1. Torch not properly connected to power supply, check that torch leads are properly
connected to power supply.
2. Work cable not connected to work piece, or connection is poor, make sure that work
cable has a proper connection to a clean, dry area of the workpiece.
3. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
4. Faulty Torch, return for repair or have qualified technician repair.

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H. Low cutting output
1. Incorrect setting of CURRENT (A) control, check and adjust to proper setting.
2. Faulty components in unit, return for repair or have qualified technician repair.
I. Difficult Starting
1. Worn torch parts (consumables), shut off input power. Remove and inspect torch shield
cup, tip and electrode. Replace electrode or tip if worn; replace shield cup if excessive spatter
adheres to it.
J. Arc shuts off during operation; arc will not restart when torch switch is activated.
1. Power Supply is overheated (OC/OT lamp on), let unit cool down for at least 5 minutes.
Make sure the unit has not been operated beyond Duty Cycle limit. Refer to Section 2 for
duty cycle specifications.
2. Gas pressure too low (the TIP/GUN/GAS lamp on when press on torch switch is on),
check source for at least 4bar/60psi; adjust as needed. It is need to open the machine cover.
L. Torch cuts but cuts are of low quality
1. Amperage control set too low, increase current setting.
2. Torch is being moved too fast across workpiece, reduce cutting speed.
3. Excessive oil or moisture in torch, hold torch 1/8 inch (3 mm) from clean surface while
purging and observe oil or moisture buildup (do not activate torch). If there are contaminants
in the gas, additional filtering may be needed.

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Routine Maintenance
The life of your machine and the quality of the work performed using your machine, will be
enhanced by practicing periodic routine maintenance.
•At regular intervals, clear dust that may accumulate in the machine using clean and dry
compressed air. If the working condition has heavy smoke and pollution, the welding machine
should be cleaned once a month.
•Keep the machine exterior clean with mild soap and water.
•Do not walk on or store items on the cables or cords.
•Do not jar, drop, or stack items on top of the machine.
•Always connect the machine to a well-grounded electrical outlet.
•Always check the torch consumables before and after use and ensure that they are clear of
obstructions, and that no parts are damaged.
•Replace any worn or damaged consumables before using machine.
•For periods of prolonged non-use, remove cables and store them in their original boxes in
a cool dry place.

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LONGEVITY® Global, Inc. thanks you for your purchase and the opportunity to be able to
serve you. If, after reviewing this manual, you have any problems in setting up or operating
your machine, contact us at [email protected].
LONGEVITY® Global, Inc.
Toll-Free 1-877-LONG-INC / 1-877-566-4462
Website: www.longevity-inc.com
Sales: [email protected]
Customer Service: [email protected]
Dealers: [email protected]
Please join our welding forums to share welding tips and tricks, to receive useful information
from customers who also use our products, and to be a part of the LONGEVITY® welding
community at www.freeweldingforum.com
For the coolest LONGEVITY sponsored race teams plus a complete racing forum that covers
everything from Drag Racing to RC Car Racing, please check out www.longevity-racing.com!
Enjoy your new welding machine from LONGEVITY! Thanks again!