P30U Instruction Manual Revision : 1
1st December 2006
Page 1
OPERATION MANUAL
for the
GOODWIN P30U
UNDERWATER
AIR PLASMA CUTTING SYSTEM
Страница 1: ...P30U Instruction Manual Revision 1 1st December 2006 Page 1 OPERATION MANUAL for the GOODWIN P30U UNDERWATER AIR PLASMA CUTTING SYSTEM...
Страница 2: ...act It is strongly recommended that all users and supervisors familiarisethemselveswiththecontents PRIOR TO COMMENCING USE OF THE SYSTEM and in particular the section on safety precautions which shoul...
Страница 3: ...NG WITH STAND OFF 15 5 3 3 CUTTING SPEED 16 5 3 4 PIERCING THICKER MATERIALS WITH A HAND TORCH 17 5 4 Troubleshooting 18 5 5 Consumable Life 18 5 5 1 INTRINSIC LIFE 18 5 5 2 ALIGNMENT 18 5 5 3 TRANSIE...
Страница 4: ...he cut is not a hazard to the operator or to others e Protection is necessary against ultraviolet radiation emitted from the arc A helmet or shield with shade glass is recommended Note however that th...
Страница 5: ...d personnel should remove the canopy 1 4 Packaging Handling and Transport Should the plasma unit need to be shipped we recommend re use of the original packing crate Also a That the hose set be discon...
Страница 6: ...RC is brought close to the work piece MAINARC isTRANSFERRED to the work piece as a jet of high energy which rapidly melts any metal with which it makes contact providingfastcutting lowresidualheatinpu...
Страница 7: ...Where the material to be cut forms part of the structure which is earthed or grounded to the mains electricalsupplysystem thenthecuttingcurrentcouldflowthroughthatrouteratherthantheplasma earth lead t...
Страница 8: ...filter to establish a proper flow Switch on the machine by rotating the main isolator and pressing the on off button ensuring the emergency stop switch is unlatched Correct phase connection is determ...
Страница 9: ...lasma air the yellow hose is a pneumo connection to allow the plasma air pressure to automatically track the working depth The water connections are not polarised but it is advisable to follow the col...
Страница 10: ...supervisors panel and a communications procedure to energise the torch The torch will de energise if the diver s switch is released at any time Note that it is good practice to leave the power unit ru...
Страница 11: ...5 1 Machine Controls The front panel of the machine provides a range of displays and control gear to ensure correct operation ON OFF BUTTONS Switchesauxiliarycircuitsonandoff ieCompressor waterpump c...
Страница 12: ...the air regulator tracks the working depth therefore the pressure gauge shows this operating pressure plus the working depth 1 bar 10m 32 ft TrackingAirRegulator Sets the air flow through the torch t...
Страница 13: ...h WATER INDICATOR Indicatesinsufficientwaterflowinthetorch EARTH CURRENTINDICATOR Indicates excessive currents in the supply earth see section 3 2 EARTH SAFETYINDICATOR Indicates a break in the earth...
Страница 14: ...will illuminate Note thatthe supervisorspanelwill always need to be reset even ifthe machine has been reset on the front panel To ascertain the absence of air leaks the air regulator should be wound...
Страница 15: ...ximity of the work piece or by positioning the torch over the edge of the work piece and starting the pilot arc Underwater and especially at depth it may be necessary to always start very close to the...
Страница 16: ...of the plate either by observing the ejected material or by studying the surface of a cut after complet ing a test cut The drag back of the arc is aproximately 30 degrees CUTTING TOO SLOW Arc appears...
Страница 17: ...duallybringingitupright aspiercingiscompleted Initiate the pilot arc and lay the torch over at approximately 60 Begintwistingthetorchslowlytowardsaverticalpositiontaking caretoavoidejectedmaterialfrom...
Страница 18: ...eerodedslightlyeachtimethearcisstruckeventuallycreatingavisiblecrater The crater can be more than 2mm deep before the electrode is considered to be expired 5 5 2 Alignment Thealignmentandconstructiono...
Страница 19: ...e powerunit before removing the nozzle forthis purpose Once a non starting electrodehasbeenusedafewtimes startingusuallyimproves It is not good practice to fire the pilot arc continually in mid air wi...
Страница 20: ...BLES which are eroded during the cutting process They consist of a Nozzle b ElectrodeAssemblycomprising Electrode SwirlBush Oring Other parts that may be damaged and replaced by the user are Front Cap...
Страница 21: ...eal and the front cap retaining ring as it may be caught between the two seals and preventfittingofthefrontcap Thefrontinsulatormaybereplacedifdamagedusingthespecialtoolprovided Thisisanoperation that...
Страница 22: ...or this purpose THIS IS VERYIMPORTANT If the Electrode is not pressed fully home onto the ContactTube the Swirl BushmaybepartlycrushedbytheNozzle andwillinterferewiththeairflow 6 CarefullyscrewtheNozz...
Страница 23: ...50Hz 70 amp 98 amp 460v 60Hz 70 amp 98 amp Other voltages and frequencies available to order 6 1 2 Electrical Output Opencircuitvoltage 330 345V dc Typicalarcvoltage 150 200V dc Main arc power 36kW Pi...
Страница 24: ...thecompressorisfirstpassed through a cooling radiator and then a coalescing filter to dry it This has an automatic drain The high pressure water pump supplies cooling water to the torch through quick...
Страница 25: ...P30U Instruction Manual Revision 1 1st December 2006 Page 25 7 1 1 CircuitDiagram...
Страница 26: ...Page 26 P30U Instruction Manual Revision 1 1st December 2006 7 1 2 MachineLayout 18 19 16 20 9 4 6 7 5 10 3 11 29 15 12 14 13 27 28 17 8...
Страница 27: ...t Neon 23 Air Pressure Regulator 24 Stop Start Switch 25 Emergancy Stop Switch 26 Reset Switch 27 Water Pump 28 Compressor 29 Solonoid Valve Not Shown Dix Connector Not Shown Power Factor Correction C...
Страница 28: ...tomatically EARTH CURRENTINDICATOR Indicatesthemainarccuttingcurrentisflowinginasecondarypath Systemwillstopuntilitisreset when the torch switch is released See section 3 2 for cutting earth requireme...
Страница 29: ...removed the torch head may be serviced or repaired If a spare torch and umbilical is available the machine may be put back in service whilst repairs are carried out TORCH BLOCKAGE The water flow in th...
Страница 30: ...his dust which may represent a health hazard Use personal protection as necessary Clean or replace the compressor air intake filter Check tightness of all electrical and mechanical connections Check t...
