LOTOS LTPDC2000D User manual

LOTOS TECHNOLOGY
Plasma Cutter TIG Stick Welder LTPDC2000D
www.uwelding.com

Lotos Technology LTPDC2000D
Quick Setup
Instructions
Power plug wiring:
For either110 or 220VAC, the GREEN wire is the ground wire. The WHITE and BLACK wires are hot
wires.
For Plasma Cutting:
1. Weara Lotos auto darkening plasma cutting helmet
(Figure 1.1, not included in the box. To purchase, please
go to our website.) to protect your eyes from harmful
plasma cutting arc radiation 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 65-70PSI. (The Air Regulator is optional if your air
compressor has the capability to control output air pressure.)
65 - 70 PSI
Gas
Inlet
Figure 1.2
Power
Cord
Figure 1.3
1

3. Connect your plasma cutting 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 /Stick Weld /Plasma Cut
- 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
to Plasma Cut mode.
Pilot
Arc
Ground
Cable
Plasma
Torch
Output
Figure 1.4
4. Attach the ground clamp to the metal you want to cut. Grind the metal to make sure the clamp
is securely attached to the work piece. Press the trigger of the torch and make sure the air is
flowing. Finally, move the torch head to the work piece and start cutting.
5. Change your consumables (tip, 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 Cutting.)
2. Connect the machine gas inlet (on the back of the machine, Figure 1.5) to the argon regulator
and adjustthe knob to set gas pressure between 15and 20 min/L (an argon regulator is
necessary, Figure 1.6.)
2

Output
from
Air
Compressor
Argon
Gas
Figure 1.5
Gas
Inlet
15-20
min/L
Argon
Regulator
Figure 1.6
Machine
Air
Compressor
Figure 1.7
a) If you switch from plasma cutting to TIG welding quite often,
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/Stick Weld/Plasma Cut 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
Figure 1.8
5-pin
Switch
Plug
3

b) If you want to dynamicallycontrol the welding heat, please use a foot pedal (not included in the
box. To purchase, pleasego to our website). Thenconnect the “on/off” connector to your foot
pedal and leave the wire of the TIG torch unplugged.
- Set TIG Weld/Stick Weld/Plasma CUT 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 amps (Figure 1.9).
Foot
Pedal
with
Amp Adjusts
Tig Torch
Output
(Leave the torch switch unplugged.)
Figure 1.9
Figure 1.9
5-pin
Foot Pedal
Plug
Gound
Cable
3. TIG torch head parts (Figure 1.9) and assembly (Figure 1.10)
(The tungsten is not included in the picture; please buy proper DC Lotos tungsten electrodes.)
Grind and sharpen the tungsten before first use.
Figure 1.10
Figure 1.11
4

For Stick/Arc/MMA Welding:
1. Wear our auto darkening welding helmet and gloves to protect your eyes andhands from any
harmful welding arc. (Please see step 1in Plasma Cutting.)
2. You don’t need to connect the machine to any gas or air supply. It’s a plug and play.
Panel connection instructions:
- Set TIG Weld/Stick Weld/Plasma Cut to Stick 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 (Figure1.11).
Stick
Welding
Clamp
Ground
Cable
Figure 1.12
Please be sure to turn off the machine when you switch from one function to another.
This is important, because otherwise the machine could be damaged.
Allaccessories andconsumables can be purchased at www.uwelding.com or Lotos’s authorized
resellers.
Thank you for your business!

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

Table of Contents
Introduction
6
Overview . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 6
Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 6
Safety Precautions 7
Overview . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . . 7
Caution Recommendations . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 7
Avoiding Fatal Electric Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 7
Avoiding Harmful Smoke, Gases,and Vapors . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . 7
Avoiding Harmful Arc Emissions/Rays . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .7
Avoiding Harmful Noises . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 7
Fireor Explosion . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . 8
BurnProtection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 8
Protecting Eyes from Flying Metalor Dirt . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 8
Pacemakers . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 8
Cylinder Handling . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 8
Equipment 9
General Overview . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 9
Main Characteristics . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . 9
Adjustor Diagram . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 12
AirRegulatorConfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . 12
Connecting Cables toMachine. . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . 13
Installations . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 15
Gas RegulatorInstallation . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . . . . . . . .. . . 16
Argon Installation . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 16
Operation . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 17
Instruction Notes 19
Working Environment . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . 19
Safety . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 19
Maintenance . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .. . . 20
Troubleshooting . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . 20
Formoreinformationandmoreofourproducts,
pleasevisitourwebsiteat
http://www.uwelding.com/

Introduction
Overview
Dear Valued Customer:
Thank you for purchasing a Lotos Technology plasma cutter! Feel free to check out our other products at
www.uwelding.com.
This UserManualdocuments policies and procedures for proper operation of the equipment.
IMPORTANT: Be sure to review the contents of this manual before attempting to operate the equipment.
This manual should be located where it can be easily referenced by allusers ofthe machine.
Audience
This manual assumes that all individuals reading the manual and using thewelder/cutter are able,
qualified, and/or certifiedto operate this type of machinery.
6

Safety Precautions - Read Before Using
Overview
Protect yourself and others from injury — read and follow these precautions.
Caution Recommendations
CAUTION: Welding and arc cutting
can cause bodily injury.
· Do NOT switch off the machine while machine is
in operation for internal circuitry can be
damaged.
Avoiding Fatal Electric Shock
· Isolate yourself from both the
earth and the work piece.
· 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 times. 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
certified for welding/cutting.
· Make sure that your working area is
nonflammable and explosive-free.
Avoiding Harmful Smoke, Gases, and Vapors that can injure or kill.
Welding produces fumes and gases.
Breathing these fumes and gases can
be hazardous to your health.
Avoiding Harmful Arc Emissions/Rays that can burn eyes and skin.
Arc rays from the welding process
produce intense visible and invisible
rays that can burn eyes and skin.
Sparks fly off from the weld.
· Wearappropriate clothing and a welding or
cutting mask to protect your eyes and skin.
Avoiding Harmful Noises that can damage hearing.
Noise from some processes can
damage hearing.
· Use appropriate screen or curtain to prevent
emissions from reaching individuals near the
work area.
· Ensure that yourworking area contains no
flammable items; and that none are nearby.
Caution: Welding and cutting spray can ignite.
· Wear protective earplugs while operating
machine.
7