Instruction manual
Contents
1. Overeating Instructions WARRANTY All parts of the Piranha III grinding machine are covered by a warranty of one year The grinding wheel is considered as a consumable part and therefore not included This warranty shall not apply to any equipment which has been subject to misuse negligence applications beyond specification accidents fire or exposure to any other service than that it was designed SAFETY NOTES All personnel involved with the installation operation or maintenance must review and follow these notes to avoid personal injury and equipment hazard e machine should never be running in the absence of the operator An inattentive member of the staff may touch the turning grinding wheel In case of doubt the machine should be stopped and then separated from power supply Do not remove the plug while the wheel is still in motion e The rules for prevention of accidents have to be respected e Suitable workwear is mandatory safety glasses hair protection Do not wear handgloves when working Loose items like ties watches etc are strictly forbidden e Any service by unexperienced drunken or other personnel not aware of the inherent danger is not admissible e Provide for a sufficient illumination in the working area e Before starting any maintenance procedure the power has to be removed Electrical work should only be performed by a qualified technician e Defective parts have to be replaced immediately2. Thus the electrode is notched and can be broken at that point ATTENTION Breaking the electrode with an insufficient notch entails cracks It is therefore important not to interrupt the cutting procedure too soon LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 7 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de pe Lol e E UA HANDELSGESELLSCHAFT MBH 19 a rati ia 2 TI 5 EXCHANGING THE GRINDING WHEELS Only use original spare parts for Piranha III diamond wheels These wheels are manufactured a particular process introducing a strong binding strength between wheel and diamonds Unsuitable spare parts generally cannot fulfill the conditions required for tungsten grinding This will not only considerably reduce their lifetime but also cause additional damage which is explicitely excluded from the warranty An adapted spare wheel is always available Part No DGP PG1423 PIRANHA III Grinding Wheel grain 150 unilateral INSTALLATION OF A NEW ITEM To remove a worn grinding wheel and install a new item proceed as follows 1 Switch off power and separate the machine from the mains Wait until the motor stands still 2 Screw off lever completely see above Lift the guide unit and remove it Take care not to lose the disc between guide unit and lever Put the parts apart 3 Remove the six
3. Provisional repair may increase the damage and represents a violation of warranty regulations e machine should always be operated for the intended purpose in conformity with the specification e External forces on a tungsten electrode in the grinding process not only unnecessary they may even have detrimental consequences like the jamming of the machine or a premature wear of the wheel e Keep your hands away from moving parts LITTY Handelsgesellschaft mbH D 83355 Erlstatt e Kaltenbacher Weg 12 3 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de pe Lol e E UA HANDELSGESELLSCHAFT MBH 9 f 2 SON UNCRATING AND INSTALLATION Upon receiving the machine remove the shipping crate and check for damage In case of need the carrier and our factory service should be informed at once The following items should be contained in the package e Grinding machine for tungsten electrodes Piranha III model e Three Allan keys 2 x 3 32 1 x 7 64 required to exchange grinding wheels e User manual e Electrode holder The machine should be placed on a flat surface Provide for a sufficient area around it This ensures the required ventilation and the operator will be able to work without obstructions The power switch should be in the OFF AUS position then the machine can be connected to the mains Never draw off the power
4. plug when the machine is still switched on INITIAL WORK BEFORE STARTING TO GRIND SETTING THE GRINDING ANGLE NE The grinding angle is adjusted using lever A shown above When loosening this lever the guide unit can be rotated until the pointer is directed to the desired angle on the scale standard value 28 Lever B however sets the vertical position of the guide unit and refers to the contact point of electrode and grinding wheel This position should be altered in regular intervals otherwise the electrodes continuously touch the same wheel position which entails scoring at the surface LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 4 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de pe Lol e E UA HANDELSGESELLSCHAFT MBH 19 a ia 2 f SON SETTING THE ELECTRODE HOLDER COLLET CHUCK After grinding angle and positioning the next parameter to adjust is the projecting length inside the electrode holder resp the collet chuck Proceed as follows o An electrode with a projecting length of ca 40 mm has to be fixed inside the holder Switch on the machine o Push the electrode through the boring with the corresponding diameter at the guide unit until it touches the grinding wheel o The holder and the electrode have to be rotated with constant pressure until a concentric tip i
5. thumb screws from the wheel cover Remove the cover to expose the wheel 4 Remove the four screws at the front side of the wheel using the Allan key contained in the original package 5 The worn grinding wheel can be exchanged now Insert the spare wheel While mounting an even orientation should be maintained to prevent the wheel from jamming afterwards 6 Reassemble the machine just following the steps in the opposite way LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 8 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de UA REMOVAL OF GRINDING DUST CLEANING PROCEDURE e machine needs no particular maintenance Grinding dust is automatically collected close to the grinding wheel front part An external extraction system is therefore unnecessary e The cleaning frequency depends on the number of grinded electrodes Simply remove the thumb screws G at the front panel open the cover and remove the dust using a small brush or a vacuum cleaner e Electrodes free from radiation do not require a safety procedure but In the case of radioactive elements carefully follow the instructions issued by your safety advisor Radioactive dust should never be inhaled or enter the body through eyes and ears Long term damage to health cannot be excluded Furthermore the local jurisdiction of disposal must be observed LITTY Handelsgesellschaft mbH D 833
6. 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de HANDELSGESELLSCHAFT MBH rat ia 2 Sry 1 Cf 5 EE EE OOO FEATURES e Compact device with an outstanding accuracy and repeatability e Rugged construction adapted to harsh environmental conditions e Grinding in longitudinal direction for easy ignition and highest stability of the arc e Convenient for electrode diameters with holder between 1 0 and 3 2 mm Without holder manual ADVANTAGES procedure from 4 0 to 4 8 mm Range of grinding angle between 10 and 60 Suitable also for short electrodes min 45 mm Depth adjustment to flatten the tip Integrated cutter for a simple breakdown of electrodes Grinding dust is internally collected Simple disposal without external extraction system Integrated facility to remove worn tips High grinding power ensures rapid process cycle Circular grinding with maximum precision Safe use Optimum welding results High productivity SPECIFICATION Electrode diameter 1 0 mm 1 6 mm 2 0 mm 2 4 mm 3 2 mm 4 0 mm 4 8 mm Minimum electrode length 45 0 mm Voltage 100 120 Volt AC 50 60 Hz 220V Power requirement 500 W Motor 1 10 PS 3000 rpm 2 5 Length 340 mm Width 180 mm Height 240 mm Weight 21 00 kg LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 2 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de
7. 55 Erlst tt Kaltenbacher Weg 12 9 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de HANDELSGESELLSCHAFT MBH DRAWING AND PARTS LIST ELEMENT PART NO DESCRIPTION 4 peerciu sHGs mo32xigiG 6 berne ROcK SWNGNGARM s porrciase structure stoppen emus OC oO EE Q ty ES p LITTY Handelsgesellschaft mbH D 83355 Erlst tt e Kaltenbacher Weg 12 10 Qoerating Instructors ANGULAR POSITION MEASURING PLATE PLUG 1 PLUG FINE MACHINING 3 4 BORE NYLON BLACK POINTER ANGLE MAINS CABLE WITH SLEEVE PSA BAND BRUSH SCREW FLAT HD BASE 46 32 X 1 4 LG DIAMOND WHEEL GRAINING 300 10 E 1 0861 9098 160 0861 9098 161 eMail litty tungsten de Web www tungsten de
8. HANDELSGESELLSCHAFT MBH Instructions PIRANHA III Grinding Machine for Tungsten Electrodes d Me YT S SS Y c NES Et gt LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de LL m pe ei en e Lol s UA HANDELSGESELLSCHAFT MBH 19 rat f 2 n ay PIRANHA III This grinding device is particularly designed for tungsten electrodes It is intended for stationary use only and meets all of the requirements to a state of the art quality product Without additional tools it allows for an easy grinding cutting and flattening of electrodes Besides the standard version diamond wheels with different graining are available sometimes required for specific kinds of material Contents Page FEATURES ADVANTAGES SPECIFICATION 2 WARRANTY SAFETY NOTES 3 UNCRATING AND INSTALLATION 4 INITIAL WORK BEFORE STARTING TO GRIND 4 SETTING THE ELECTRODE HOLDER COLLET CHUCK 5 PRINCIPLE OF GRINDING 6 DISMANTLING A WORN ELECTRODE TIP 7 BREAKING DOWN THE ELECTRODE 7 EXCHANGING THE GRINDING WHEELS 8 INSTALLATION OF A NEW ITEM 8 REMOVAL OF GRINDING DUST CLEANING PROCEDURE 9 DRAWING AND PARTS LIST 10 LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 1 Phone 0861 90 98
9. s achieved o The procedure ends when the fixture contacts the guide unit or the noise of grinding ceases o The electrode should be acute If it is still flat increase the proceting length and grind again If necessary the whole procedure has to be repeated several times o On the other hand if the selected projecting length is too high long grinding process strong shortening of the electrode proceed in the opposite way o As soon as an optimum grinding result is achieved the setup has to be conserved o Therefore without changing the projecting length push the electrode together with the holder through Or boring depending on the diameter see below o Turn the screw upwards or downwards until the depth matches the projecting length between electrode and holder A tolerance of 1 mm is advisable o This setup can be used for all subsequent grinding operations Electrode Holder LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 5 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de Geer Qoerating Instructions PRINCIPLE OF GRINDING Once the setup is complete it is not difficult to start grinding the electrode e Switch on power e Push the electrode into the holder and adjust the projecting length by introducing the item into the or boring e As soon as the electrode is stable in place introduce it to the boring of the guide uni
10. t until it touches the grinding wheel e The holder and the electrode have to be rotated with constant pressure until a concentric tip is achieved e The procedure ends when the fixture contacts the guide unit or the noise of grinding cannot be heard anymore The following table shows the grinding times with standard wheel which may slightly vary according to the material mm ores ne 5 0 3 16 48mm 100 130sec LITTY Handelsgesellschaft mbH D 83355 Erlst tt Kaltenbacher Weg 12 6 Phone 0861 90 98 160 eMail litty tungsten de Fax 0861 90 98 161 Web www tungsten de DISMANTLING A WORN ELECTRODE TIP After welding it is useful to dismantle the tip before restarting to grind This increases the lifetime and improves the arc ignition Switch on power and insert the electrode into the boring which corresponds to the requested diameter at the front panel of the machine Carefully push the electrode against the grinding wheel and shorten it for about 5 to 7 mm This represents an optimum value to restore the original tungsten grain in order to obtain a reproducible welding result BREAKING DOWN THE ELECTRODE The cutting procedure is carried out at the right side of the device Slide the electrode through the corresponding boring until it comes out from the other side Hold both ends tight and push the electrode while slowly rotating it towards the edge of the turning grinding wheel
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