Makino V55, Руководство по обслуживанию

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4V2A1563 (E) 5 - 3
5.2.1 Troubleshooting and Diagnosis
Preventive Maintenance needs to be mentioned, as those companies per-
forming maintenance at the recommended frequencies should use this
chapter less often.
Modern component reliability is such that, when items subject to wear or
deterioration are inspected or renewed at the specified intervals, sudden
failure becomes reasonably rare.
Those components that can fail without warning (fuses, switches, filters
etc.) are often small and easily kept on hand.
Major mechanical faults are generally preceded by characteristic symp-
toms over hours, weeks, or longer.
Electrical faults can be more puzzling than mechanical failures, but are no
less susceptible to logical analysis, if the basic principles are understood.
The first step in any fault finding (troubleshooting) is deciding where to
begin the investigation.
• Makino equipment is set up with two-level alarm and diagnostic
displays, which provide key starting places for pursuing faults.
• In troubleshooting, a calm and logical approach will prove to be of the
greatest benefit. Think it through. Avoid the haphazard adjustment
syndrome.
• Always take into account any telltale warning signs or abnormalities
which may have been noticed prior to the fault – power loss, high or
low gauge reading, sounds, smells, etc.
• Question the operator about what the machine was doing at the time of
the failure.
• Remember, failure of components such as fuses or thermal relays may
only be indicators of some underlying fault.
• It is a good idea to keep a log on machine problems and their
remedies, as well as a record of maintenance and adjustments for
future reference and time saving.