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TIG 185 DC. Operating manual.

TIG 185 DC. Operating manual.

1. Recommended safety precautions.

Clothing

Suitable clothing must be worn to prevent excessive exposure to UV 

radiation and sparks. An adjustable helmet, flameproof loose fitting 

cotton clothing buttoned to the neck, protective leather gloves, spats, 

apron and steel capped safety boots are highly recommended.

Recommended filter shades for arc welding

 

Less than 150 amps

150 to 250 amps

250 to 300 amps

300 to 350 amps

Over 350 amps

 

Shade 10*

Shade 11*

Shade 12

Shade 13

Shade 14

* Use one shade darker for aluminium

1.3 Cylinder safety

1

 Cylinder valve hand-wheel, 

2

 Back-plug, 

3

 Bursting disc

Operator wearing personal 

protective equipment (PPE)  

in safe position

Backview of typical  

cylinder valve

1

2

3

Ten points about cylinder safety

1.  Read labels and Material Safety Data Sheet (MSDS) before use.

2.  Store upright and use in well ventilated, secure areas away from 

pedestrian or vehicle thoroughfare.

3.  Guard cylinders against being knocked violently or being allowed to 

fall.

4.  Wear safety shoes, glasses and gloves when handling and connecting 

cylinders.

5.  Always move cylinders securely with an appropriate trolley. Take care 

not to turn the valve on when moving a cylinder.

6.  Keep in a cool, well-ventilated area, away from heat sources, sources 

of ignition and combustible materials, especially flammable gases.

7.  Keep full and empty cylinders separate.

8.  Keep ammonia-based leak detection solutions, oil and grease away 

from cylinders and valves.

9.  Never use force when opening or closing valves.

10. Don’t repaint or disguise markings and damage. If damaged, return 

cylinders to Ryval immediately.

Cylinder valve safety

When working with cylinders or operating cylinder valves, ensure that 

you wear appropriate protective clothing – gloves, boots and safety 

glasses. When moving cylinders, ensure that the valve is not accidentally 

opened in transit.

Before operating a cylinder valve:

 

→ Ensure that the system you are connecting the cylinder into is 

suitable for the gas and pressure involved.

 

→ Ensure that any accessories (such as hoses attached to the cylinder 

valve, or the system being connected to) are securely connected. 

A hose, for example, can potentially flail around dangerously if it is 

accidentally pressurised when not restrained at both ends.

 

→ Stand to the side of the cylinder so that neither you nor anyone else 

is in line with the back of the cylinder valve. This is in case a back-

plug is loose or a bursting disc vents. The correct stance is shown in 

the diagram.

When operating the cylinder valve:

 

→ Open it by hand by turning the valve hand-wheel anti-clockwise. Use 

only reasonable force.

 

→ Ensure that no gas is leaking from the cylinder valve connection or 

the system to which the cylinder is connected. 

Do not use

 ammonia 

based leak detection fluid as this can damage the valve. Approved 

leak detection fluid can be obtained from your Ryval supplier.

 

→ When finished with the cylinder, close the cylinder 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 before performing any maintenance or 

service

 

→ Earth all work materials

 

→ Never work in moist or damp areas.

Avoid electric shock by:

 

→ Wearing dry insulated boots

 

→ Wearing dry leather gloves

 

→ Never changing electrodes with bare hands or wet gloves

 

→ Never cooling electrode holders in water

 

→ Working on a dry insulated floor where possible

 

→ Never hold the electrode and holder under your arm.

1.5 User responsibility

 

→ Read the Operating Manual prior to installation of this machine.

 

→ Unauthorised repairs to this equipment may endanger the technician 

and operator and will void your warranty. Only qualified personnel 

approved by Ryval should perform repairs.

 

→ Always disconnect mains power before investigating equipment 

malfunctions.

 

→ Parts that are broken, damaged, missing or worn should be replaced 

immediately.

 

→ Equipment should be cleaned periodically.

PLEASE NOTE that under no circumstances should any equipment or 

parts be altered or changed in any way from the standard specification 

without written permission given by Ryval. To do so, will void the 

Equipment Warranty.

1.1 Health hazard information

The actual process of welding is one that can cause a variety of hazards. 

All appropriate safety equipment should be worn at all times, i.e. 

headwear, respiratory, hand and body protection. Electrical equipment 

should be used in accordance with the manufacturer’s recommendations.

Eyes

The process produces ultraviolet rays that can injure and cause 

permanent damage. Fumes can cause irritation.

Skin

Arc rays are dangerous to uncovered skin.

Inhalation

Welding fumes and gases are dangerous to the health of the operator 

and to those in close proximity. The aggravation of pre-existing 

respiratory or allergic conditions may occur in some workers. Excessive 

exposure may cause conditions such as nausea, dizziness, dryness and 

irritation of eyes, nose and throat.

1.2 Personal protection

Respiratory

Confined space welding should be carried out with the aid of a fume 

respirator or air supplied respirator.

 

→ You must always have enough ventilation in confined spaces. Be alert 

to this at all times.

 

→ Keep your head out of the fumes rising from the arc.

 

→ Fumes from the welding of some metals could have an adverse effect 

on your health. Don’t breathe them in. If you are welding on material 

such as stainless steel, nickel, nickel alloys or galvanised steel, 

further precautions are necessary.

 

→ Wear a respirator when natural or forced ventilation is not good 

enough.

Eye protection

A welding helmet with the appropriate welding filter lens for the 

operation must be worn at all times in the work environment. The 

welding arc and the reflecting arc flash gives out ultraviolet and infrared 

rays. Protective welding screen and goggles should be provided for 

others working in the same area.

Содержание TIG 185 DC

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

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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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