16/48
EN
7.
Purge the hose briefl y with gas by opening the oxygen valve (4). Long
hoses and/or small cutting nozzles require somewhat longer purges. Close
the oxygen valve (4) and the heating oxygen valve (13).
8.
Open the fuel-gas valve (3) and purge as above. Maintain suffi cient fu-
el-gas fl ow for proper purging. Close the fuel-gas valve (3).
9.
Open the oxygen valve (4) fully, heating oxygen valve (13) a little and
fuel-gas valve (3) little bit more.
10.
Light the gas mixture in front of the nozzle .
11.
Open the cutting-oxygen by pressing the lever or opening cutting oxygen
valve (14). Adjust the oxygen pressure by means of the adjusting screw on
the regulator or the supply point.
12.
Once the cutting oxygen is fl owing, the heating fl ames can be adjusted by
means of the fuel-gas valve (3) and the heating oxygen valve (13)
13.
The device is now ready for use.
5.3. EXTINGUISHING THE FLAME
1.
Release the lever of the valve or closed the cutting oxygen valve for the
cutting oxygen (14).*
2.
Slowly close the valve for fuel gas (3) and after that valve for heating oxy-
gen (4).
3.
Closed the valve for heating oxygen (13) on the cutting attachment. *
*(Cutting set only)
6. MAINTENANCE
Keep the torch clean. Do not lubricate any of the parts. Oil or grease can cause
an explosion when in contact with oxygen.
•
The holes in the cutting nozzle should be cleaned when necessary with
appropriate cleaning needles or with KR21 chemical cleaner. Do not use
drill bits, steel wire or similar objects for cleaning, as the channels inside the
nozzle will be damaged.
•
Proper fl ames and an even fl ow of cutting oxygen cannot be obtained un-
less the edges of the nozzle holes are sharp.
•
If the outlet end of the welding or cutting nozzle is damaged, it may be
repaired by polishing perpendicularly with a fi ne emery cloth laid on a fl at
surface.
•
If a valve turns too easily or too stiffl y, tighten or loosen respectively the
packing nut with the spanner supplied. Obtain help from a service engineer
if repairs are necessary.
6.1. REPAIRS
Repairs must be done by authorized personnel only.
Summary of Contents for U7
Page 2: ......
Page 3: ...U7 PL U7 17 GER U7 20 GER U7 ORIGINAL U7 CZ 22 M x 1 5 M27 x 1 5 U7 2001 U7 2001...
Page 12: ...RU 1 2 3 4 5 6 7 8 9 10 11 12...
Page 43: ...43 48 RU 1 ISO EN 5172 EN 1256 EN ISO 3821 ISO 5175 1 1 ISO 5175 2 2 ISO 5175 2 U7 3 20 60 U7...
Page 44: ...44 48 RU 4 U7 4 1 U7 Fig 1 Schematic picture 4 2 Fig 2 Marking A O P F 1 2...
Page 45: ...45 48 RU 5 5 1 5 2 5 2 1 1 7 2 3 4 3 4 5 4 4 6 3 3 7 4 3 8 9 4 3 10 5 2 2 1 7 2 3 4 4 3 14 5 6...
Page 46: ...46 48 RU 7 4 4 13 8 3 3 9 4 13 3 10 11 14 12 4 3 13 5 3 1 14 2 3 4 3 13 6 KR21 6 1...