96 Maintenance
Requirements for maintenance personnel
The maintenance person is typically the building or photovoltaic (PV) system
caretaker. For residential systems, the maintenance person is often the building
owner. During commissioning, the commissioning electrician must teach the
maintenance person the maintenance procedures and explain the easiest way to
order spare parts.
Maintenance procedures and intervals
The table below lists the routine maintenance intervals recommended by ABB.
The maintenance intervals are suggested for a typical inverter, in a typical location for
a typical operating duration. Maintenance intervals should be reduced if, for example,
the inverter is located in a relatively harsh environment (non-standard installations or
installations continuously operating under extreme environmental conditions).
Interval Maintenance
action
Instruction
Weekly Check event log Use the control panel to check the event logs from the
Events Menu. The menu shows the most recent events as
faults or other events. Note that a single fault can
potentially give rise to several events.
Events are stored in the memory until the event memory is
full. When the event memory is full the inverter
automatically removes the oldest events from the event
memory.
Monthly Check
operation of the
cooling and
stirring fans
Check the Events menu for possible fan faults. The
inverter activates a maintenance reminder when both fans
(cooling and stirring) should be replaced.
Note that the cooling fan only operates when the inverter
detects that cooling is required.
Change the fan(s) when the inverter displays a fan fault or
a replacement reminder.
Monthly Check the
environment
Make sure that the inverter is still in its intended operating
environment. Check that the installation environment is still
clean, dry, free of obstacles near to the inverter and that
the ambient temperature has not risen since installation.
Monthly Cleaning Clean the inverter installation space and mounting area
regularly to remove dust and dirt. This helps to prevent
clogging of the cooling fan and heat sink of the inverter.
Monthly
(Yearly if the
inverter is
indoors with
restricted
access)
Check
connections
Check that cables are properly routed to the inverter.
Cables should be tidy, secure and in good condition.
Check that connectors are properly connected and that
they are in a safe, unbroken condition. Check that possible
screw and spring terminal connections are tight.