WEG CESTARI Worm Gearbox line, Instruction Manual

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Worm Gearbox line
7 Operation
Before starting operation, check that the gearbox is filled with oil and that the lubricant level is adequate as
recommended.
Make sure that the geared motor/gearbox rotates freely. Make sure that the connection diagram is as shown
on the motor nameplate for the required voltage.
ATtention!
Standard motors are suitable for clockwise and counterclockwise rotation. Connecting the power cables in
phase sequence L1, L2, L3 to U1, V1, W1 results in clockwise rotation (looking at the shaft end on the drive
side).
If the two connections are changed the rotation will be counterclockwise (e.g. L1, L2, L3 to V1, U1,
W1).
Identify the desired direction of rotation by activating the geared motor uncoupled from the equipment if
reversal of the direction of rotation is necessary must reverse any two phases.
Check that the screws, nuts and connections of the motor terminals and the gearbox fixing screws and nuts
are properly tightened.
For geared motors/gearbox supplied with a rubber-sealed vent valve for transportation, completely remove
the protective rubber installed in the valve before the geared motor/gearbox is operated (as shown below):
After this procedure, the vent valve is ready to operate.
When the gearbox starts operating, the oil temperature gradually rises until it stabilizes after approximately
3 hours, reaching the operating temperature.
8 Maintenance
The main purpose of periodic preventive maintenance is to check the operating conditions of the geared
motor/gearbox. It must be performed by qualified people.
There are no strict rules to be followed when addressing inspection programs. The periods and types of
examinations to be carried out can be extended or reduced according to the working conditions and location
where the gearbox/geared motor is installed.