ROTHENBERGER ROGROOVER 2 - 12 - Manual (Page 33)

32 ENGLISH
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 a tube stabiliser can be
ordered as an option.
OPERATION