Virax GR2-12 Manual De Instrucciones página 26

OPERATION
Warnings and advice for knurling
You must be familiar with the machine structure, its
functions and the propulsion and lubrication systems
by reading the manual prior to starting operation.
Before switching on the machine add oil as indicated
in the manual. Check that the hydraulic cylinder is full
of oil.
Connection to earth and the fuse are required in
the circuit. The motor must be correctly connected.
Never put the machine into operation if overloaded.
The upper roller and lathe screw must be suitably
selected according to table 1 to ensure optimum
knurling. The steel tubes must have both ends and
the surface polished before starting to make knurl. If
the tube comes out of the lathe screw increase the
tube's degree of deviation. In the event of knurling
steel tubes with large diameters fix the four machine
feet as well as the three tube support feet to the
ground using screws.
In the event of knurling in steel tubes with large
diameters (over 165 mm), the tube could
brusquely swing during the knurling process due
to roughness and poor grooving or could even cause
a malfunction. In order to solve this problem, use the
tube stabiliser.
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ENGLISH