SENLAN SB40 MAINTENANCE & TROUBLESHOOTING
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7.1 Daily inspection and maintenance
In order that the inverter may work reliably for a long period, you
must install and operate it strictly in accordance with this manual.
And conduct the daily inspection and maintenance as follows:
■ Check that if the operation environment of the inverter meets the
requirements.
■ Check that if the inverter operation parameters are set within the
specified ranges.
■ Check that if the inverter or motor has unusual noise, vibration or
overheating.
7.2 Periodical maintenance
Periodical maintenance should be performed once every 3 or 6
months depending on the service conditions.
Check items:
■ Check to see if the three phase output voltages (U, V, W) are
balanced when the inverter operates without load.
■ Check to see if the screws of the control circuit terminals are loose.
If so, tighten them.
■ Check the input(R, S, T) and output(U, V, W) terminals for
damage.
■ Check that if the connections between terminals(R, S, T, U, V, W)
and copper plates are firm.
■ Check the terminals and copper plates for overheating,
discoloration and deformation.
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