LOTOS CT520D Specification sheet

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LOTOS TECHNOLOGY
www.uwelding.com
Plasma Cutter TIG Stick Welder CT520D

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Lotos Technology CT520D
Quick Setup
Power plug wiring:
For either 110 or 220VAC, the GREEN wire is the ground wire. The WHITE and BLACK wires are hot
wires.
For Plasma Cung:
1. Wear a Lotos auto darkening plasma cung helmet
(Figure 1.1, not included in the box. To purchase, please
go to our website.) to protect your eyes from harmful
plasma cung arc radiaon and safety gloves to protect
your hands during welding.
2. Connect the machine gas inlet (on the back of the machine, Figure 1.2) with an air compressor
(Figure 1.3) and set the air pressure to 65-70 PSI. (The Air Regulator is oponal if your air
compressor has the capability to control output air pressure.)
1
Instructions
Figure 1.1
Figure 1.2 Figure 1.3
65 - 70 PSI
Power
Cord
Gas
Inlet

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3. Connect your plasma cung torch and ground cable to the front panel of the machine. Make
sure the ground cable is connected on the right hand side where the “+” sign is located.
(Figure 1.4)
- Set TIG Weld /Sck Weld /Plasma Cut switch to Plasma Cut mode.
- Set “2.5S/5S” to “2.5S” Mode.
- Set “Machine/PEDAL” to “Machine” Mode.
- Adjust Current Dial between 10 and 50 amps.
4. Aach the ground clamp to the metal you want to cut. Grind the metal to make sure the clamp
is securely aached to the work piece. Press the trigger of the torch and make sure the air is
owing. Finally, move the torch head to the work piece and start cung.
5. Change your consumables (p, electrode, ring, and cup) if they are worn out. The consumables’
type is LCON. If you want to cut the perfect circle or perfect straight line, order a Lotos
LCK roller guider compass kits from our website www.uwelding.com.
1. Wear our auto darkening helmet and gloves to protect your eyes and hands from any harmful
welding arc. (Please see step 1 in Plasma Cung.)
2. Connect the machine gas inlet (on the back of the machine, Figure 1.5) to the argon regulator
and adjust the knob to set gas pressure between 15 and 20 min/L (an argon regulator is
necessary, Figure 1.6.)
For TIG Welding:
Figure 1.4
STICK
Welding
Clamp Plasma
Torch
Output
5-pin
Switch
Plug
Ground
Cable
2

a) If you switch from plasma cung to TIG welding quite oen,
consider buying a LOTOS 3 way valve kit to connect
both the argon tank (Figure 1.7) and the air
compressor simultaneously.
- Connect your TIG torch and ground cable to the front panel of the machine.
- Make sure the ground cable is connected on the right hand side where the “+” sign is located.
- Set TIG Weld/Sck Weld/Plasma Cut switch to TIG Weld mode (refer to Figure 1.4, page 2).
- Set “2.5S/5S” to “2.5S” mode.
- Set “Machine/PEDAL” to “Machine” mode.
- Adjust current dial from 10 to 200 amps (Figure 1.8).
Figure 1.5 Figure 1.6
Figure 1.7
Figure 1.8
Output
from
Air
Compressor
Argon
Regulator
Argon
Gas
Machine
Gas
Inlet
Air
Compressor
15-20
min/L
5-pin
Switch
Plug
TIG
Torch
Output
3

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b) If you want to dynamically control the welding heat, please use a foot pedal (not included in the
box. To purchase, please go to our website). Then connect the “on/o” connector to your foot
pedal and leave the wire of the TIG torch unplugged.
- Set TIG Weld/Sck Weld/Plasma Cut switch to TIG Weld mode (refer to Figure 1.4, page 2).
- Set “2.5S/5S” to “2.5S” mode.
- Set “Machine/PEDAL” to “Pedal” mode.
- Adjust current dial between 10 and 200 Amp (Figure 1.9).
3. TIG torch head parts (Figure 1.10) and assembly (Figure 1.11)
(The tungsten is not included in the picture; please buy proper DC Lotos tungsten electrodes.)
Grind and sharpen the tungsten before rst use.
Figure 1.9
Figure 1.10 Figure 1.11
Foot
Pedal
with
Amp Adjusts
Ground
Cable
5-pin
Foot Pedal
Plug
TIG Torch
Output
Unplugged
4

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For Sck/Arc/MMA Welding:
1. Wear our auto darkening welding helmet and gloves to protect your eyes and hands from any
harmful welding arc. (Please see step 1 in Plasma Cung.)
2. You don’t need to connect the machine to any gas or air supply. It’s a plug and play.
Panel connecon instrucons:
- Set TIG Weld/Sck Weld/Plasma Cut switch to Sck Weld mode (refer to Figure 1.4, page 2).
- Set “2.5S/5S” to “2.5S” mode.
- Set “Machine/PEDAL” to “Machine” mode.
- Adjust current dial between 10 and 200 amps (Figure 1.12).
Last but not least, please be sure to turn o the machine when you switch from one funcon to
another. This is important, because otherwise the machine could be damaged.
All accessories and consumables can be purchased at www.uwelding.com or Lotos’s authorized
resellers.
Thank you for your business!
Figure 1.12
Ground
Cable
Stick
Welding
Clamp

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LOTOS Plasma Cutters
User Manual
Version: 2.0, May 2014
copyright @ Lotos Technology
www.uwelding.com is operated by Lotos Technology

For more information and more of our products,
please visit our website at
http://www.uwelding.com/
Introducon 6
Overview ................................................................................
Audience................................................................................
Safety Precauons 7
Overview .................................................................................
Cauon Recommendaons .................................................................
Avoiding Fatal Electric Shock ................................................................
Avoiding Harmful Smoke, Gases, and Vapors ..................................................
Avoiding Harmful Arc Emissions/Rays ........................................................
Avoiding Harmful Noises ...................................................................
FireorExplosion..........................................................................
Burn Protecon ...........................................................................
Protecng Eyes from Flying Metal or Dirt .....................................................
Pacemakers..............................................................................
CylinderHandling.........................................................................
Equipment 9
General Overview .........................................................................
Main Characteriscs .......................................................................
Specicaons .............................................................................
Adjustor Diagram .........................................................................
Air Regulator Conguraon ................................................................
Connecng Cables to Machine..............................................................
Installaons ..............................................................................
Instrucon Notes 19
Working Environment .....................................................................
Safety ...................................................................................
Maintenance .............................................................................
Troubleshoong ..........................................................................
Table of Contents
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7
7
7
7
7
8
8
8
8
8
9
9
9
12
12
13
15
16
16
17
19
19
20
20
6
6
Gas Regulator Installation ..................................................................
Argon Installaon .........................................................................
Operaon ...............................................................................

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6
Introduction
Overview
Dear Valued Customer:
Thank you for purchasing a Lotos Technology plasma cuer! Feel free to check out our other products at
www.uwelding.com.
This User Manual documents policies and procedures for proper operaon of the equipment.
IMPORTANT: Be sure to review the contents of this manual before aempng to operate the equipment.
This manual should be located where it can be easily referenced by all users of the machine.
Audience
This manual assumes that all individuals reading the manual and using the welder/cuer are able,
qualied, and/or cered to operate this type of machinery.

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Safety Precautions - Read Before Using
Overview
Cauon Recommendaons
Arc rays from the welding process pro-
duce intense visible and invisible rays
that can burn eyes and skin. Sparks y
o from the weld.
CAUTION: Welding and arc cung
can cause bodily injury.
• Connect the machine to a UL-approved outlet
only. Do not hard wire the machine directly to
the power source.
• Wear safety goggles at all mes. This will dark-
en the arc that is generated by the machine and
protect your eyes from harmful rays.
• All machine operators should be technically
cered for welding/cung.
Avoiding Harmful Smoke, Gases, and Vapors that can injure or kill.
Avoiding Harmful Arc Emissions/Rays that can burn eyes and skin.
Avoiding Fatal Electric Shock
Protect yourself and others from injury — read and follow these precautions.
Welding produces fumes and gases.
Breathing these fumes and gases can
be hazardous to your health.
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• Do NOT switch o the machine while machine is
in operaon for internal circuitry can be
damaged.
• Wear appropriate clothing and a welding or
cung mask to protect your eyes and skin.
• Use appropriate screen or curtain to prevent
emissions from reaching individuals near the
work area.
• Ensure that your working area contains no
ammable items; and that none are nearby.
Cauon: Welding and cung spray can ignite.
Avoiding Harmful Noises that can damage hearing.
Noise from some processes can
damage hearing.
• Wear protecve earplugs while operang
machine.
• Isolate yourself from both the
earth and the work piece.
• Make sure that your working area is
nonammable and explosive-free.