ROTHENBERGER ROFLASH Benutzerhandbuch
Seite 23
ENGLISH
19
Labelling in accordance with DIN EN ISO 5172
Cutting and heating nozzle for injector-type torch(example)
= mixture with suction effect (injector-type torch)
= gas back-discharge-proof mixture with suction effect
= mixture without suction effect (gas-and-pressure-air torch)
= gas back-discharge-proof mixture without suction effect
5
Start-up
5.1
Preparation
Change the gas cartridges in a well-ventilated area, preferably outdoors.
Caution! All pieces that come into contact with oxygen must be kept free from oil and
grease. Risk of explosion!
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Check to make sure that all threaded connections and seals (e.g., cone, nut and hose nipple)
are clean and not damaged.
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Connect hoses (13 and 14) in accordance with DIN EN 559 or DIN 4815 (liquid gas) to torch
inlet connections (15) or pressure regulator outlet connections (3) or flashback arrestor (25
or 26) for oxygen, 4 or 6 mm internal diameter
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Identification colour:
blue or green
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for fuel gas, 4, 6, 8, or 9 mm internal diameter
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Identification colour:
red
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liquid gas identification colour
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Identification colour:
orange
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Use hoses and hose nuts and nipples in accordance with DIN EN 560 only. Use suitable hose
clamps to secure the hoses on the hose nipples.
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Connection thread size:
oxygen
G 1 / 4
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Fuel gas
G 3 / 8 LH
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When hose couplings are used, they must be in accordance with DIN EN 561.
gas - type
identification
mark
Identification
colour
oxygen O
blue
compressed air
D
black
acetylene A
yellow
propane P
orange
methan, natural gas
M
red
methylacetylene/propa-
dienmixture (MAPP
®
)
Y orange
fuel gas (other fuel gas,
e.g. GRIESON
®
)
F red
hydrogen H
red
oxygen - pressure
(bar)
mixing system
range (mm)
gas type
manufacturer’s
identification mark
type