HM Machinery SBM 28B, Manual, Page: 22 / 76

The circuit under tension is identified by the orange color wiring or otherwise,
corresponding warning tables will be stuck to the associated wiring. The rest of the electric
circuit will remain without electric tension.
Please, check thoroughly the electric drawing of the supplied machine in the instruction
book for any maintenance or reparation job.
Note: The machine must be connected to the electric power through a protection
differential switch. Any electrical maintenance or reparation job must be made by a
qualified and trained technician.
MACHINE CARE AND MAINTENANCE
Drilling machines are highly accurate machine tools designed to operate around the clock
if properly operated and maintained. The machine must be lubricated and checked for
adjustment before operation. Improper lubrication or loose nuts, and bolts, can cause
excessive wear and dangerous operating conditions.
1. Check the machine prior to operation for any missing parts or broken shear pins. Refer
to the manual before attempting to lift the machine.
2. Newly installed machines should be properly leveled before any operations to prevent
vibration and wobble.
3. When the machine is transported out of a normal shop environment, it should be
protected from dust, excessive heat, and very cold conditions.
4. Change the lubricant frequently if working in dusty conditions.
5. In hot working areas, avoid overheating the motor or damaging any seals.
6. Operate the machine at slower speeds than normal when working in cold
environments.
7. During the operation, the chips that fall onto the table surface should be cleaned timely.
8. After the operation, eliminate all the chips and clean different part of the machine tool
and apply machine tool oil to prevent rusting.
9. In order to maintain the machining accuracy, take care of the center, the surface of the
machine tool for the chuck, and avoid mechanical damage and wear due to improper
guide.
10. If a damage is found, the maintenance should be done immediately.