The recommended preventive maintenance tasks shall be performed on an
ANNUAL basis, except for the inspection of fans and filters which should
be conducted each MONTH.
Maintenance operations must be performed by qualified personnel.
There is an electrical discharge hazard.
To access the various compartments, the safety recommendations
set out in Chapter 1 must be taken into account.
All the maintenance checks included herein should be performed with
NO VOLTAGE PRESENT IN THE INVERTER and in safe manipulating
conditions.
The following sections indicate the actions to follow for the correct
maintenance of the INGECON
SUN SMART U inverters.
7.1 Maintenance tasks
Check the condition of the enclosure.
A visual inspection should be made of the enclosure condition, checking
the condition of the seals, doors and handles and also that the equipment
is firmly secured to its anchors at the base and at the top, if applicable.
Likewise, the enclosure should be checked to ensure that it is free from
knocks, scratches or rust which could degrade the cabinet or cause it to
lose its Protection Rating. Should any defects of this nature be observed,
then the parts affected should be replaced immediately.
Check the condition of the cables and terminals.
- Check that the cables are guided correctly in order to ensure that they
cannot come into contact with live parts.
- Check the insulation for damage and hot points, inspecting the colour of
the insulation and terminals.
Torque of the nuts and bolts securing the bus bars and power cables.
Check the torque by applying the forces indicated in the following table:
M8 24 Nm
M10 47 Nm
M12 64 Nm
In compliance with DIN 13.
7
Preventive maintenance
Installation and Operation Manual
INGECON
®
SUN SMART U
AAS2000IKI05
AAS2000IKI05
Rev. _
Date: February 2011
Page 52
