Lotos CT520D User Manual

LOTOS TECHNOLOGY

Plasma Cutter TIG Stick Welder CT520D

www.uwelding.com

®

Lotos Technology CT520D
Quick Setup

Instructions

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.

Figure 1.1

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.)

65 - 70 PSI

Gas

Inlet

Power

Cord

Figure 1.2 Figure 1.3

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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.

5-pin

Switch

Plug

Ground

Cable

STICK

Welding

Clamp

Plasma

Torch

Output

Figure 1.4

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.

For TIG Welding:

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.)

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Output

from

Air

Compressor

Argon

Gas

Machine

Air

Compressor

15-20

min/L

Gas

Inlet

Argon

Regulator

Figure 1.5 Figure 1.6

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.

Figure 1.7

- 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).

TIG

Torch

Output

5-pin

Switch

Plug

Figure 1.8

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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).

Foot

Pedal

with

Amp Adjusts

TIG Torch

Output

Unplugged

Ground

Figure 1.9

5-pin

Foot Pedal

Plug

Cable

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 1.10 Figure 1.11

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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).

Ground

Cable

Stick

Welding

Clamp

Figure 1.12

IMPORTANT: To avoid damaging the machine, please be sure to turn o the machine when you
switch from one funcon to another.

All accessories and consumables can be purchased at www.uwelding.com or Lotos’s authorized

resellers.

Thank you for your business!

®

LOTOS CT520D
User Manual

Version: 3.0, June 2017

copyright @ Lotos Technology

www.uwelding.com is operated by Lotos Technology

®

Table of Contents

Introducon 6

Overview ................................................................................

Audience ................................................................................

Safety Precauons

Overview .................................................................................

Cauon Recommendaons .................................................................

Avoiding Fatal Electric Shock ................................................................

Avoiding Harmful Smoke, Gases, and Vapors ..................................................

Avoiding Harmful Arc Emissions/Rays ........................................................

Avoiding Harmful Noises ...................................................................

Fire or Explosion ..........................................................................

Burn Protecon ...........................................................................

Protecng Eyes from Flying Metal or Dirt .....................................................

Pacemakers ..............................................................................

Cylinder Handling .........................................................................

Equipment

General Overview .........................................................................

Main Characteriscs .......................................................................

Specicaons .............................................................................

Adjustor Diagram .........................................................................

Air Regulator Conguraon ................................................................

Connecng Cables to Machine..............................................................

Installaons ..............................................................................

Gas Regulator Installation ..................................................................

Argon Installaon .........................................................................

Tips for Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operaon ...............................................................................

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7

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9
9
12
12
13
15
16
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17

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6
6

7
7
7
7
7
7
8
8
8
8
8

Instrucon Notes

Working Environment .....................................................................

Safety ...................................................................................

Maintenance .............................................................................

Troubleshoong ..........................................................................

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For more information and more of our products,

please visit our website at

http://www.uwelding.com/

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