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USE AND MAINTENANCE MANUAL - ELECTRICAL EQUIPMENT
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Troubleshooting in the electric sector is a particular maintenance activity that requires practical experience,
since interventions in the presence of voltage may have to be performed, as well as theoretical technical knowledge
of the systems. The difficulties regarding troubleshooting in the electric system are due to the fact that they are
difficult to identify with respect to mechanical problems. The faults are only visible in particular cases, such as
bonding switch contacts or disconnection of cables from clamps. In most cases the faults must be searched for by
performing tests with the aid of suitable instruments, starting from the detection of the presence of power supply
voltage and searching for the breakpoint in the functional sequence.
The repairs/inspection of the electrical equipment must only be performed by
The operator must not perform maintenance, repairs or troubleshooting
Refer to the technical documentation (wiring diagrams, manuals of the individual components, etc.)
for troubleshooting interventions, in order to correctly identify the system elements and the relative
functions.
ATTENTION
Do not use makeshift solutions such as "jumpers" on terminal boards, which by-pass the functional or
safety sequences!
At the end of the intervention, before using the machine/system again, check that any pieces replaced and/or
the tools used for the intervention have been removed from the machines. The machine/system can then be
switched back on.
ATTENTION
In the event of faults or malfunctioning of the equipment supplied, Varisco SpA must be informed. The latter will
provide specialised personnel and/or all information necessary for eliminating the problem.
In the event of the intervention of a thermal overload protection, duly trained and authorised personnel can access
the electric control panel, identify the switch in question and reset it by pressing the button or activating the switch
reset lever (according to the type of switch).
All power supply sources must always be disabled before performing any reset or replacement
If, after having reset the thermomagnetic-circuit breaker or having replaced the fuse, the thermal relay should
intervene or the fuse be damaged again, do not repeat the operation and contact Varisco SpA directly for all
necessary indications to be provided.
Anomalous situations, faults and emergencies are signaled on the control panel.
The operator must take note of the signals and request the intervention of qualified personnel for the
necessary inspections of the machine.
Ed. 2010/09 - Rev. 00 - Cod. M08527
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qualified personnel, authorised to carry out electrical work.
interventions on the machine/system!
Actuator functions are described in Chapter 3.
NOTE
WARNING!
intervention.
19/24
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