VM Series Maintenance and Safety Manual 704-0212-209 Machine Maintenance 3- 29
Machine Electrical Ground
Every 3 Months: Measure the ground impedance (resistance to true earth).
The ground for the machine is located inside the control cabinet, near the disconnect
switch.
Machine Level
Every 6 Months or every 1000 hours: Verify the machine is sitting level.
Place a precision level (resolution 0.0005 in/ft.) parallel and perpendicular to the work
table surface.
Enclosure Windows
Daily: Inspect the enclosure windows for scratches, damage, cracks, or other
deformities that could adversely affect the impact resistance.
Polycarbonate Panels which are used as viewing window of machines are subject to
significant deterioration in its impact resistance due to the action of metal working fluids
and other lubricants. The degradation process depends on the amount and type of fluids
and can lead to a loss of approximately 10% of panel’s impact resistance per year. It is
the operator’s responsibility to ensure that the control measures for ejections of work
pieces and/or chuck jaw are sufficient for the hazard and that the control measures are in
proportion to the risk.
Hurco recommends that the user contact your Hurco representative for application of
safety film or replacement glass periodically to ensure the proper corrective action is
taken.
Only a licensed electrician should perform this procedure.
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