Maintenance • 79
Steel Wire of the Counterbalancing Cylinder
With the frequency recommended in the maintenance schedule, inspect carefully and spread a thin layer of
grease on the steel wire of the pneumatic cylinder. Use KLÜBER MICROLUBE GL 261 grease or an
equivalent class NGLI 1 grease (ISO 3448).
If the steel wire shows signs of wear, call the Hexagon customer service
immediately to have it replaced. Do not use the measuring machine until the
wire has been replaced.
Emergency Buttons and Safety Devices
With the frequency indicated on the preventive maintenance plan, check that the emergency buttons
present on the measuring system are working properly: the emergency button on the Jogbox, on the
machine and on the control system.
Check also that any peripheral protective devices enabled are working properly (for example, optical
barriers, interlocked gates or laser scanner systems).
In case of laser scanner, check that it is working, as indicated in the control system user instruction manual,
and check the extension of the protected areas (shown in the “Optional Laser scanner” section on page
16).
Check the stop function of the machine and, more in general, of the measuring system while the machine
is moving at maximum speed in a safe area. Check, during these tests, that the machine’s stopping spaces
are not excessive: the machine should stop within the space of a few centimeters.
One of the symptoms of a fault is when the control system has to be turned off and then on again in order
to restart the measuring system after it has been stopped by pressing an emergency button.
Contact the Hexagon customer service immediately if any fault is found in the
operation of the emergency pushbuttons or of the active protection system, if
present.
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