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7

terminal.

5.5 torch installation

MMA cable connections
Connect electrode lead to positive terminal

TIG welding cable connection
Connect the TIG torch to the - terminal

5.6  Work return lead connection

MMA cable connections
Connect work lead to negative terminal

TIG welding
Connect the work return lead to the + terminal

6.0 Operation

WarnInG

When using an open arc process, it is necessary to use correct 
eye, head, and body protection.

6.1 MMA Welding Guide

Effects of MMA welding various materials

High tensile and alloy steels
The two most prominent effects of welding these steels are the 

formation of a hardened zone in the weld area, and, if suitable 

precautions are not taken, the occurrence in this zone of under-bead 

cracks. Hardened zone and under-bead cracks in the weld area may 

be reduced by using the correct electrodes, preheating, using higher 

current settings, using larger electrodes sizes, short runs for larger 

electrode deposits or tempering in a furnace.

Manganese steels
The effect on manganese steel of slow cooling from high 

temperatures is enbrittlement. For this reason it is absolutely 

essential to keep manganese steel cool during welding by quenching 

after each weld or skip welding to distribute the heat.

Cast iron
Most types of cast iron, except white iron, are weldable. White iron, 

because of its extreme brittleness, generally cracks when attempts 

are made to weld it. Trouble may also be experienced when welding 

white-heart malleable, due to the porosity caused by gas held in this 

type of iron.

Copper and alloys
The most important factor is the high rate of heat conductivity of 

copper, making preheating of heavy sections necessary to give 

proper fusion of weld and base metal.

Types of electrodes

Arc welding electrodes are classified into a number of groups 

depending on their applications. There are a great number of 

electrodes used for specialized industrial purposes which are not of 

particular interest for everyday general work. These include some 

low hydrogen types for high tensile steel, cellulose types for welding 

large diameter pipes, etc. The range of electrodes dealt with in this 

publication will cover the vast majority of applications likely to be 

encountered; are all easy to use and all will work on even the most 

basic of welding machines.

Metals being joined & electrode comments
Mild steel  
6013 ideal electrodes for all general purpose work. Features include 

outstanding operator appeal, easy arc starting and low spatter.

Mild steel  
7014 all positional electrode for use on mild and galvanized steel 

furniture, plates, fences, gates, pipes and tanks etc. Especially 

suitable for vertical down welding.

Cast iron 
99% nickel suitable for joining all cast irons except white cast iron
Stainless steel 
318l-16 high corrosion resistance. Ideal for dairy work, etc. On 

stainless steels.

6.1.1 MMa controls

Hotstart,

 

This control should be used to improve the starting 

of electrodes and prevent sticking on first ignition. Increasing the 

setting causes a surge in current when the electrode is struck to 

reduce the risk of sticking.

arc Force

.

 

This controls allows the use of a short arc without risk 

of the electrode sticking. For normal welding it should be set to zero. 

Increasing the setting allows the current to rise more when the  arc 

voltage falls.

6.2 

Basic TIG Welding guide

Tig welding cable connection
Connect the TIG torch to the - terminal and the work lead to the + 

terminal for direct current straight polarity. Direct current straight 

polarity is the most widely used polarity for DC TIG welding. It allows 

limited wear of the electrode since 70% of the heat is concentrated 

at the work piece. Connect the gas hose on the TIG torch to the gas 

outlet on the gas regulator. Move the selector switch on the front 

panel of the machine to the LIFT-TIG position. 

Torch starting in Lift TIG mode

Ensure the gas supply is switched on and gas is flowing from the 

front of the torch nozzle. Briefly contact the tip of the tungsten 

electrode down onto the work piece with the torch at around 70

0

 from 

vertical, lift the torch up from the work piece to draw out an arc. To 

prevent melting of the end of the tungsten the machine will increase 

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Содержание XTS 203 MMA

Страница 1: ...Operator Manual ISSUE 1 XTS 203 MMA...

Страница 2: ...maintenance this equipment should provide years of reliable service All our systems conform to ISO9001 2000 and are independently audited by NQA The entire product range carries the CE mark and is co...

Страница 3: ...grounding connection 6 5 4 Output Polarity Connections 6 5 5 Torch Installation 7 5 6 Work return lead connection 7 6 0 Operation 7 6 1 MMA Welding guide 7 6 1 1 MMA Controls 7 6 2 Basic TIG welding...

Страница 4: ...ealth FUMES AND GASES can be hazardous Keep your head out of the fumes Do not breathe the fumes If inside ventilate the area and or use local forced ventilation at the arc to remove welding fumes and...

Страница 5: ...noise level is high Shielding gas cylinders contain gas under high pressure CYLINDERS can explode if damaged Protect compressed gas cylinders from excessive heat mechanical shocks physical damage sla...

Страница 6: ...d The green yellow wire in the input cable connects to the frame of the machine This ensures proper grounding of the machine when the machine plug is inserted into the receptacle 5 4 Output Polarity C...

Страница 7: ...me low hydrogen types for high tensile steel cellulose types for welding large diameter pipes etc The range of electrodes dealt with in this publication will cover the vast majority of applications li...

Страница 8: ...build up sequence the output current when it detects the rise in arc voltage as the tungsten is lifted from the work piece TIG welding guide ranges Electrode diameter DC current amps 0 040 1 0mm 30 60...

Страница 9: ...tration adequate penetration Use suitable tools to remove all slag from corners f Use electrodes designed for position in which welding is done otherwise proper control of slag is difficult TIG weldin...

Страница 10: ...ect the right shielding gas Refer to basic TIG welding guide e Improve connection to work piece Power source problems Description Possible cause Remedy The welding arc cannot be established a The prim...

Страница 11: ...tted with 5 8 BSP inlet connections Stock Code Description Maximum Outlet Pressure E700140 Argon Preset Regulator 3 0 Bar E700141 Argon Indicator Regulator 3 0 Bar E700113 1 Gauge Argon 30 lpm flow E7...

Страница 12: ...www parweld com 12 ACCESSORY ER26 and ER26FX Air Cooled Ergo Tig Welding Torch B 2 3 11 12 13 4 5 10 9 7 6 8 14 15 16 C D E A 1 18 17 1 A F G H I J 1 A K L...

Страница 13: ...Code Description H 45V29 Gas Lens Body 0209 0 5mm Bore 45V24 Gas Lens Body 0409 1 0mm Bore 45V25 Gas Lens Body 1 169 1 6mm Bore 45V26 Gas Lens Body 3 329 2 4mm Bore 45V27 Gas Lens Body 1 89 3 2mm Bore...

Страница 14: ...to be compliant with the rohs directive with all homogeneous component parts being controlled to ensure material contents as per the list below Cadmium 0 01 by weight Lead 0 1 by weight Mercury 0 1 by...

Страница 15: ...the product determined by Parweld to be defective Parweld makes no other warranty express or implied This warranty is exclusive and in lieu of all others including but not limited to any warranty of...

Страница 16: ...Parweld Limited Bewdley Business Park Long Bank Bewdley Worcestershire England DY12 2TZ tel 44 1299 266800 fax 44 1299 266900 www parweld com info parweld co uk...

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