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TIG 185 DC. Operating manual.

Important Notice:

 This document has been prepared by Ryval, as general information and does not contain and is not to be taken as containing any specific instructions. The 

document has been prepared in good faith and is professional opinion only. Information in this document has been derived from third parties, and though Ryval believes it to 

be reliable as at the time of printing, Ryval makes no representation or warranty as to the accuracy, reliability or completeness of information in this document and does not 

assume any responsibility for updating any information or correcting any error or omission which may become apparent after the document has been issued. Neither Ryval 

nor any of its agents has independently verified the accuracy of the information contained in this document. The information in this document is commercial in confidence and 

is not to be reproduced. The recipient acknowledges and agrees that it must make its own independent investigation and should consider seeking appropriate professional 

recommendation in reviewing and evaluating the information. This document does not take into account the particular circumstances of the recipient and the recipient should 

not rely on this document in making any decisions, including but not limited to business, safety or other operations decisions. Except insofar as liability under any statute cannot 

be excluded, Ryval and its affiliates, directors, employees, contractors and consultants do not accept any liability (whether arising in contract, tort or otherwise) for any error 

or omission in this document or for any resulting loss or damage (whether direct, indirect, consequential or otherwise) suffered by the recipient of this document or any other 

person relying on the information contained herein. The recipient agrees that it shall not seek to sue or hold Ryval or their respective agents liable in any such respect for the 

provision of this document or any other information.

Congratulations on purchasing the Ryval TIG 185 DC welding 

machine. The products in Ryval’s manual metal arc range perform 

with reliability and have the backing of one of the world’s leading 

suppliers of welding products.

This operating manual provides the basic knowledge required for MMA 

and DC TIG welding, as well as highlighting important areas of how to 

operate the TIG 185 DC welding machine.

For more information or support please contact your local Ryval supplier.

Welcome to a better way of welding.

Summary of Contents for TIG 185 DC

Page 1: ...TIG 185 DC Operating Manual ...

Page 2: ... into account the particular circumstances of the recipient and the recipient should not rely on this document in making any decisions including but not limited to business safety or other operations decisions Except insofar as liability under any statute cannot be excluded Ryval and its affiliates directors employees contractors and consultants do not accept any liability whether arising in contr...

Page 3: ...gsten electrode selector chart 11 3 Manual Metal Arc Welding MMAW 3 1 Introduction 3 2 Process 3 3 Welding machine 3 4 Welding technique 3 5 Electrode selection 3 6 Types of joints 14 4 Package contents Page 15 5 Control panel 16 6 TG 185 DC Operation 6 1 Power 6 2 Shielding gas 6 3 TIG torch connection 6 4 MMA operation 6 5 TIG welding operation 18 7 Technical specifications 19 8 Troubleshooting ...

Page 4: ...er valve by hand by turning the valve hand wheel in a clockwise direction Use only reasonable force Remember NEVER tamper with the valve If you suspect the valve is damaged DO NOT use it Report the issue to Ryval and arrange for the cylinder to be returned to Ryval 1 4 Electrical shock Never touch live electrical parts Always repair or replace worn or damaged parts Disconnect the power source befo...

Page 5: ...r sources with constant current output characteristics are normally employed to supply the welding current For DC operation the tungsten may be connected to either output terminal but is most often connected to the negative pole The output characteristics of the power source can have an effect on the quality of the welds produced Use of DCEN For a given diameter of tungsten electrode higher ampera...

Page 6: ...ng Best DC arc starts and stability 3 Manual Metal Arc Welding MMAW reversal is called a half cycle and repeats as long as the current flows The rate of change of direction of current flow is known as the frequency of the supply and is measured by the number of cycles completed per second 3 3 Welding machine Basic welding machine and cables The choice of welding machine is based mostly on the foll...

Page 7: ...ct size of the electrode for the job correct welding current correct arc length correct angle of electrode to work correct travel speed correct preparation of work to be welded 3 5 Electrode selection As a general rule the selection of an electrode is straight forward in that it is only a matter of selecting an electrode of similar composition to the parent metal It will be found however that for ...

Page 8: ...Power indicator light 4 MMA TIG switch 5 Over heating indicator 6 Current selection knob 7 Downslope adjustment 8 On off switch 9 Negative dinse connector 10 Gas output 11 Contactor control 12 Positive dinse connector Package contents TIG 185 DC welding machine Power cable and plug MMA electrode holder 300A Earth clamp and return lead TIG torch and gas outlet connections Operating manual ...

Page 9: ...The contactor lead is fitted to the contactor control fitting marked 11 6 5 2 For DC pulse TIG welding DC welding of thin material can further be enhanced by using the pulse mode When using the pulse mode for DC applications the current will be varied between the welding current and a pre selected background current Additionally the pulse frequency can be adjusted By adjusting the pulse frequency ...

Page 10: ...n no oxygen or CO Maintain short arc length Use smaller electrode or increase current Remove contaminated portion then prepare again Open joint groove The most common cause is moisture or aspirated air in gas stream Use welding grade gas only Find the source of the contamination and eliminate it promptly Use appropriate chemical cleaners wire brush or abrasives prior to welding Many codes do not a...

Page 11: ...he bead size Prevent craters or notches Change the weld joint design Increase bead size Decrease root opening Use preheat Prevent craters Eliminate sources of hydrogen joint restraint and use preheat Locate and eliminate the blockage or leak Use slower travel speed or carefully increase the flow rate to a safe level below creating excessive turbulence Use a trailing shield cup Set up screens aroun...

Page 12: ...direct expenses loss damage or costs including but not limited to daily allowances or accommodation and travelling costs Modification of the primary input plug or fitment of a lower rated primary input plug will render the warranty null and void NOTE Under the terms of warranty welding torches and their consumables are not covered Direct or indirect damage due to a defective product is not covered...

Page 13: ...custserv boc com The stripe symbol and the letters BOC are registered trade marks of The BOC Group Limited Both BOC Limited and The BOC Group Limited are members of The Linde Group the parent company of which is Linde AG Reproduction without permission is strictly prohibited BOC Limited 2013 ...

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