ECE proFIT SLM Mode D'emploi page 8

4. OPERATION
Carburazing flame Neutral flame
Neutral flame with
during igniting
cutting oxygen jet
4.1. BEFORE START CUTTING
4.1.1. The operator shall be aware
of safe operation specified in this
approx. 1 mm
Instruction for Use before any handling
EN
with GCE proFIT SLM. The operator
®
shall be experienced with oxy-fuel
equipment and trained according
Workpiece
to request of ISO, EN or national
standards with respecting all requests
of legal authorities.
4.1.2. Only the cutting nozzle
according to chart above shall be
used. Nozzle-mix/injector type of the
Fig.4: Flame adjustment
cutting torch has to be respected as
well as type of the fuel gas. Use only
undamaged nozzle with undamaged and clean seat.
4.1.3. Please check also cutting torch head seat before mounting the nozzle into the cutting
torch head. Only cutting torch from the list above with undamaged and clean nozzle seat can
be used. Nozzle-mix/injector type of the cutting torch has to be respected as well as type of
the fuel gas.
4.1.4. NOZZLE CHOOSING
Please follow the chart with cutting nozzles above. Use proper nozzle size according to metal
plate thickness. GCE cutting nozzles are designed for cuts of quality level 1 according to EN
ISO 9013. It is possible to reach maximal cutting speed by set-up cutting parameters according
to chart above, cutting of straight cuts, by using of clean metal sheet surface, quality cutting
machine, undamaged cutting nozzle and oxygen with purity 99,5% or better. Gas pressures are
measured at the torch inlet.
4.1.5.TIGHTENING TORQUE OF THE NOZZLES:
Nozzle-mix cutting torch: 22-30 Nm
Cutting torch BIR+: 12 Nm for inner cutting nozzle and 18Nm for outer heating nozzle.
NOTE: All parts in contact with oxygen should be free of oil and grease due to explosion
hazards! Check whether all threaded joints and sealing surfaces, e. g. cones and balls, are
clean and undamaged!
4.2. FLAME IGNITION
AND SET UP
4.2.1. Check all gas connection tightness.
4.2.2. Adjust inlet gas pressures according to the values in the table of cutting nozzles above,
see point 2.4. (1 bar = 1,05 kPa 100kPa = 105 N/m2, 1 bar = 14,5 psi). Open the fuel gas valve and
heating oxygen valve. Ignite the outgoing mixture with proper lighter (Do not use hot metal or
matchstick). With correct pressure adjustment is produced carburizing flame. A neutral heating
flame is to be adjusted with the fuel gas valve to suit the cutting task.
4.2.3. Open shortly the cutting oxygen valve to see correct adjustment of neutral flame and
close it afterwards (see also Fig.4).
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