PLASMA CUTTERS Model Nos.
For wiring diagrams and parts lists, please refer to the accompanying booklet. SPECIFICATIONS King35 King50 King70 230V 230V 230/400V IPH 1PH 3PH 50/60HZ 50/60 HZ 50/60 HZ Max. Input Current (230V) 18A 31A 46A Max. Input Current (400V) - - 26A Supply Voltage No. of phases Frequency Fuse Rating T20A (230V) Cutting Depth - (Steel Class C) T30A (230V) T35A(230) T25A(400) 4MM 10MM 15MM No. Current Settings 1 2 2 Working Air Pressure 5 to 5.5 BAR 5 to 5.5 BAR 5 to 5.
Thank you for purchasing this CLARKE Plasma Cutter . Before attempting to operate this machine, please read this leaflet thoroughly and follow the instructions carefully, in doing so you will ensure the safety of yourself and that of others around you, and you can look forward to the Plasma Cutter giving you long and satisfactory service. 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 purchase.
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’.
take additional precautions such as filtering of the mains supply. Consideration should be given to shielding the supply cable of permanently installed welding equipment, in metallic conduit or equivalent. Shielding should be electrically continuous throughout its length. The shielding should be connected to the welding power source so that good electrical contact is maintained between the conduit and the welding power source enclosure. 2.
SAFETY PRECAUTIONS WARNING: As with all machinery, there are certain hazards involved with their operation and use. Exercising respect and caution will considerably lessen the risk of personal injury. However, if normal safety precautions are overlooked, or ignored, personal injury to the operator may result.
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. Sparks and slag can fly 10m.
ADDITIONAL SAFETY PRECAUTIONS FOR PLASMA CUTTERS The safety precautions given previously must be strictly adhered to. The following precautions are additional to, and focus specifically on Plasma Cutters. ✔ALWAYS have a fire extinguisher handy when operating the cutter.
WHAT IS PLASMA CUTTING Plasma Cutting is a fast, clean and distortion free, means of cutting through all types of metal from mild and stainless steels to aluminium brass and copper. The process relies upon the chemical reaction of a gas or mixture of gases, such as air, when subjected to very high temperatures. The gas ionises, i.e. negative electrons are separated from the atom, leaving the atom positively charged. In this ionised state, the gas is electrically conductive and is called ‘plasma’.
MAIN COMPONENTS The power generator is essentially made up of a transformer, a rectifying unit and an electronic board. The latter controls the unit safeguards and governs the work cycles of the various components which make up the unit, such as the solenoid valve, the power contactor, etc. Fig.
GENERAL LAYOUT KING 35 - FRONT PANEL Fig. 2 Warning Lamps KING 50 & 70 - FRONT PANEL Fig.
ELECTRICAL CONNECTIONS A. KING 35 & KING 50 Connect the mains lead, through a suitably fused isolator switch, to a 230 Volt (50Hz) electrical supply, having a fuse rating in accordance with that given in the specification chart on page 2. A standard 13 Amp plug MUST NOT be used with this machine.
INSTALLATION AND OPERATION On receipt, check the unit for any damage which may have occurred during transportation. You should immediately report such damage to the Clarke dealer from whom the unit was purchased. Fig. 5 A. KING 35 This model is provided with a regulator and air filter assembly, which is mounted on the rear panel as shown in fig 5. Attach the air hose by simply pushing the hose into the connector. To remove the hose, hold the clamping ring IN, whilst pulling on the hose, as shown in fig.
2. Pull out the air pressure reglator knob, (located on the front panel (King 50 & 70), or at the back of the unit (King 35), and turn it fully clockwise before connecting the air hose to the compressed air supply. This ensures the regulator is set to its lowest pressure. Make sure that the supply pressure is at least 6 bar (from 6 to 8 is ideal). Turn the air supply to the unit ‘on’, and set a pressure of 5 to 5.
9. To start cutting, bring the torch with the pilot arc near to the workpiece and the cutting arc between the torch and the workpiece will immediately light. If piercing or cutting is to be carried out from the centre of the piece, start cutting with the torch inclined and then straighten it slowly so that molten metal does not spray onto the nozzle of the torch. If this operation is to be carried out on thicknesses greater than 3-4mm, first drill a hole from which the cutting can start. 10.
MAINTENANCE A. THE BASE UNIT If any fault develops, it must repaired by a qualified technician only. Contact your CLARKE dealer for advice. Maintenance of the unit is limited to the following. 1. If the machine is in constant use, inspect every 3-4 months, and use dry compressed air to remove any dust deposit. Ensure all precautions are taken with regard to the use of compressors to clean the electronic components. 2. Check the air filter regularly.
TROUBLE SHOOTING 1. PLASMA CUTTER DOESN’T WORK Check the indicator lamps on the front panel. If Green light is OFF, check power cable and electrical input - fuse etc. If the amber Air Supply light is ON - Check compressed air supply, flow and pressure. If Thermal Overload lamp is ON - wait for a while and let the plasma cutter cool down. It will automatically reset when it is ready to start cutting again. 2. PLASMA CUTTER DOESN’T WORK - both amber lights OFF, power light ON.
