Thermocouple & Fine Wire Welder Model No. L60+
Contents
1. Electrical Power Supply Power Consumption Wires up to lmm diameter Minimum 5 10 welds min 220mm Wide x 120mm High x 110 120 Vac or 220 250 Vac Max 70VA dropping to 20VA during charging All information given is correct at time of going to press Please note that specifications and availability of certain items may be subject to change VIII eye protection TEMPERATURE amp PROCESS TECHNOLOGY To receive our regular email newsletter please register your details on our website www labfacility co uk SOUTHERN UK amp EXPORT DIVISION Units 5 6 amp 7 Block K Southern Cross Industrial Estate Shripney Road Bognor Regis West Sussex PO22 9SE Export Sales tel 44 0 1243 871287 fax 44 0 1243 871281 email exportsales labfacility co uk Southern UK Sales tel 44 0 1243 871280 fax 44 0 1243 871281 email southernsales labfacility co uk NORTHERN UK DIVISION Eden Place Unit 3b Outgang Lane Dinnington Sheffield 25 3QT Northern UK Sales tel 44 0 1909 569446 fax 44 0 1909 550632 email northernsales labfacility co uk ISO 9001 Registered UKAS QUALITY MAN em Certificate No 4746 050004 0M C2. TEMPERATURE amp PROCESS TECHNOLOGY Thermocouple amp Fine Wire Welder Model No L60 Operating Instructions www labfacility co uk CONTENTS Page Operating Instructions 0 0 0 eect eens 2 Accessories 2 chi set id eed eh eR RG ae ea eA E E EEN 3 Front Panel Contra 4 Rear Panel topsecret oth Wet bales Aha te baer 5 Setting Up Procedure 00 cece ccc cee een eens 5 Welding Instructions 0 0 0 cee 6 Energy Settings 2 Su sine edie EE bead Eeer 7 ENCE OCS eege Ne Geog tase etal as ss eae e See Eden 7 Maintenance 62 5 Seeerei 8 THERMOCOUPLE AND FINE WIRE WELDER MODEL L60 Operating Instructions The L60 welder is designed for sensor manufacturers to produce commercial grade thermocouple junctions and by users of large numbers of exposed junction thermocouples such as test and development laboratories where multipoint temperature sensing of test pieces is required No special skills are required and most people will be capable of producing quality work with minimal practice A satisfactory thermocouple junction is produced without using argon but where argon is available a momentary purge is automatically triggered immediately prior to the weld to give optimum weld integrity Wear suitable eye protection Safety Note l Always protect the eyes with a suitable filter during welding never view the weld discharge with the naked eye 2 Avoid touching the
3. ing For small diameter wires strip off about 12mm of insulation and twist together Then with side cutters or scissors cut the wire off square leaving sufficient un insulated material to give approximately Imm protruding when gripped in the welding pliers Larger diameter wires may be held side by side in the welding pliers but ensure that they are in firm contact with each other and trimmed off square This method will be found useful for attaching solid leads to resistance thermometer detectors However when attaching stranded leads it will be found more convenient to use the twisting method and then to carefully untwist after welding Energy Settings Arc Welding The following settings may be used as a guide The correct setting for a particular metal combination and wire gauge will produce a spherical bead A flattened bead indicates that the energy setting is too high Wire Diameter mm Switch at LOW 0 1 Switch at HIGH 0 3 0 15 0 5 0 2 0 7 0 25 0 8 Electrodes To replace or adjust carbon electrode first turn the welder on its side and slacken screw on base of argon shield which may be then pulled off This reveals grub screw which holds carbon electrode in place Wear suitable eye protection Maintenance Apart from keeping the electrode in good order no other maintenance is required Specifications General Energy Output Welding Capacity Duty Cycle Mechanical Physical Dimensions Weight
4. rear of the welder during operation as the power switch heat sink may run hot This is a normal operating condition 3 Do not allow the hand to directly contact the welding electrode during operation Accessories Standard Wire Holding Pliers With Lead Safety Glasses Magnifying Eyeglass Spare Carbon Electrode Spare 2A Fuse Argon Hose Hexagon key for electrode change Mains Lead Footswitch Allows One Handed Operation Optional Spare Carbon Electrodes Gas Flow Meter amp Valve Wear suitable eye protection Front Panel Controls A ram m t Arc Purge Weld Switch Argon LED Wait LED Ready LED Power Level selector Electrode Holder Red socket Black socket Argon gas and weld current controlled by the Weld switch LED indication Allows the gas line and electrode shield to be purged of air prior to a new welding period Initiates a welding operation in arc mode also opens the Argon valve Indicates when the Argon control valve is open and gas is flowing Glows when weld charge is building Ready to Weld indication Rotary control of the capacitor charge voltage Selects the total capacitance available giving the following values with LED indication LO 0 to 6 Joules MED 0 to 28 Joules HI 0 to 64 Joules Holds the replaceable carbon electrode which is accessible by removing the outer Argon Shield Output socket for u
5. sing the pliers supplied Output socket this provides an additional earth Lo MED HI ooo Rear Panel Controls A ON OFF switch Power to instrument ON OFF B Weld jack socket Footswitch connection C Argon inlet For connection to Argon supply CAUTION HOT ARGON IN J Of FOOTSWITCH Setting Up l Using a suitable connector fused at 5 amps connect to mains supply 2 If Argon is to be utilised couple argon hose to rear of welder Do not over tighten as a good seal will be made with the nut slightly more than finger tight 3 Connect free end of argon hose to the argon supply via an argon flow regulator 4 Switch on 5 Hold welding mode switch in purge position and adjust argon flow to 8 litres per min The apparatus is now ready for use Wear suitable eye protection Welding Arc Welding l Connect the work holding pliers to the red output socket 2 Depress the purge switch for 3 or 4 seconds to rid the system of air 3 Reset the mode to Arc 4 Set the energy level to the desired value 5 Prepare the wires to be welded and grip in the pliers leaving about Imm or more protruding 6 Position the wires 5 or 6mm in front of the carbon whilst steadying the hand 7 Press the weld switch or foot switch and slowly move the work towards the carbon until the arc is struck 8 Release the switch and remove the work for examination Preparation of Wires for Arc weld
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