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Summary of Contents for Clarke ARC
- Page 1 ARC WELDERS ARC WELDERS 0807 OPERATING & MAINTENANCE INSTRUCTIONS...
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Page 2: Table Of Contents
GUARANTEE This CLARKE product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase. Please keep your receipt as proof of pur- chase. -
Page 3: Emc Regulations
ELECTROMAGNETIC INTERFERENCE (EMC) Whilst this unit complies with EMC regulations, the user is responsible for installing and using the welding equipment according to the manufacturers instructions. If electromagnetic disturbances are detected then it shall be the responsibility of the user of the welding equipment to resolve the situation. In some cases this remedial action may be as simple as earthing the welding circuit, see ‘Note’. - Page 4 The welding equipment should not be modified in any way except for those changes and adjustments covered in the manufacturers instructions. In particular, the spark gaps of arc striking and stabilizing devices should be adjusted and maintained according to the manufacturers recommendations.
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Page 5: Safety -General
Work in a confined space only while it is being ventilated and, if necessary, while wearing an air-supplied respirator. Vapours from chlorinated solvents can be decomposed by the heat of the arc (or flame) to form PHOSGENE, a highly toxic gas, and other lung and eye irritating products. The ultraviolet (radiant) energy of the arc can also decompose trichloroethylene and perchloroethylene vapours to form phosgene. - Page 6 C) Fire and explosion prevention Causes of fire and explosion are: 1) combustibles reached by the arc, flame, flying sparks, hot slag or heated material; 2) misuse of compressed gases and cylinders; 3) short circuits. BE AWARE THAT flying sparks or falling slag can pass through cracks, along pipes, through windows or doors, and through wall or floor openings, out of sight of the goggled operator.
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Page 7: Safety -Arc Welding
The equipment carries high currents at significant voltages. The arc is very bright and hot. Sparks fly, fumes rise, ultraviolet and infrared energy radiates, weldments are hot. The wise operator avoids unnecessary risks and protects himself and others from accidents. - Page 8 It may overheat cables and cause a fire. Loose cable connections may overheat or flash and cause a fire. Never strike an arc on a cylinder or other pressure vessel. It creates a brittle area that can cause a violent rupture or lead to such a rupture later under rough handling.
- Page 9 6) Electrode a) Equipment with output on/off control (contactor) Welding power sources for use with the gas metal arc welding, gas tungsten arc welding and similar processes normally are equipped with devices hat permit on/off control of the welding power output. When so equipped the electrode wire becomes electrically LIVE when the power source switch is ON and welding gun switch is closed.
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Page 10: Preparation Of Working Area
✔ Welding arc can seriously damage your eyes. Both the operator and any spectators should ALWAYS use a proper welding face shield or helmet, with suitable filter lenses. Proper gloves and working clothes should be worn at all times. -
Page 11: Electrical Connections
ELECTRICAL CONNECTIONS WARNING! THIS APPLIANCE MUST BE EARTHED. A. MODELS FITTED WITH 13AMP PLUG Welders fitted with a standard 13 amp BS 1363 plug, should be connected to a to a 230 volt (50Hz) domestic electrical supply and we strongly recommend that this be done via a Residual Current Device (RCD). - Page 12 Dual Supply For machines capable of operating on 110/230V and 230/400V, the voltage selector is designed so that it can select only one voltage. In order to change voltages on earlier models, it is necessary to change the switch gate as follows: With the voltage selector knob in the OFF position, slacken the knobs’...
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Page 13: Features
FEATURES The welding capabilities of your welder are given on the data label printed on the rear panel of the machine (see list on page 22 for an explanation of markings and symbols). Thermal Overload Protection If the duty cycle of the welder is exceeded (see Specifications), the Overload Protection Device will automatically cut the power to prevent damage to the machine. - Page 14 This is an illustration of a typical layout. Although with some models, the major components may differ slightly in design and location. Fig. 1 Work Return Lead (Earth) Work Clamp (Earth) Workpiece Electrode Electrode Holder Welding Lead Work Terminal Handwheel Electrode Terminal Thermal Current Indicator Thermal Overload Indicator...
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Page 15: Assembling The Face Mask
The clear glass panel should be replaced when it becomes badly pitted. WARNING: NEVER look at an electric arc without eye protection as this can injure the eyes permanently. ALWAYS use a protection mask or welding helmet. C. Set the Controls... -
Page 16: Welding Technique
If this fails to free it, turn OFF the machine immediately as it will quickly overheat. If you withdraw the electrode too far once the arc is primed, you will lose the arc and have to try again. - Page 17 WELDING PITFALLS The arc welding technique is an acquired skill and requires considerable practice before perfect results are obtained. The diagrams below will help to explain the pitfalls in your technique and how to overcome them. 5. Current too low 1.
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Page 18: Maintenance
MAINTENANCE Your Clarke arc welder is a simple and robust unit, requiring virtually no maintenance other than the guidelines shown below. Keep the louvre passages clean to avoid a build up of dirt and oxides inside the machine, which can reduce machine output. -
Page 20: Specifications
DUTY CYCLES Example 1. 230TE Data Plate Models up to and including 230TE are covered by Reg’s EN 50060 and EN 50199, where the Duty Cycle is expressed as a number of electrodes that may be burned continuously in a given time. Referring to the table opposite, indicates number... -
Page 21: Electrical Symbols Explained
The meaning of the markings and symbols shown in the table are explained as follows. Symbol for dropping characteristic Symbol for manual arc welding and covered electrodes Symbol for the mains supply and No. of phases Duty Cycle, expressed as a % in a 10 min period Single Phase Transformer Min.
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