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CG1-2A H Beam cutter
6.2 Maintenance of the tip
The durability and security of the tip used in HK-305 is very good. So the operator should
abide the right maintenance and carriage precautions in order to ensure cutting quality.
1. Put the torch up a little and keep a 15mm distance from the plate when piercing, in order
to avoid injury when the flame back up.
2. Clean the jet hole of the tip carefully use suitable dip washer.
3. Pay attention not to damage taper seat.
Replace the tip if the following cases occur.
a. The injection stream of cutting oxygen can' t extend straightly.
b. The injection stream of cutting oxygen bifurcates at the end.
c. The click may be heard in the tip when cutting.
d. The gas leaks and burns at the hold-down nut.
e. The preheat flame is out-of-flatness.
6.3 Maintenance of carbon brush
Remove the carbon brush cap to ensure the state of carbon brush every three months or
1000 hours. If the length of the carbon brush doesn' t reach 3mm, the operator should
change it to a new one. When change the carbon brush, the operator must check that
whether put the carbon brush in right place. The direction of the carbon brush must be right
and the flexure should be consistent with the commutation.
Troubleshooting
7
1）Wing plate does not align web plate in cutting.
a. Do not set bevel angle of wing plate to zero or setting of angle is not right. Release
butterfly screws of torch seat. Torch seat mark aligns " 0" scale on the scale disc.
b. Torch mid-ship method
Fix center clamping fixture on the tip. Put torch horizontally and align one side of track. Put
dividing ruler on one side of track and swing torch. If size of tip center line keeps same all the
time, it indicates it is all right.
c. Mark parallel line on the H structural section. Low torch until torch touches upper limb of
wing plate and swing torch. If tip center line is on the same marking line all the same, it
indicates it is right. If tip centre line does not match marking line, bevel angle adjusting disk
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