9 Maintenance
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9
Maintenance
The NTX is designed to provide many years of trou-
ble-free service. Performing regular maintenance
will help ensure the long life and high efficiency of
your system.
9.1 Cleaning the fans
The fan intake should be cleaned periodically with
a vacuum cleaner. (Do not blow air into the fan
area) for deeper cleanings, the fan can be removed
completely. The NTX is fitted with one fan on its
underside.
± DC1
± DC2
AC GRID
COM
OFF
ON
1
2
4
3
1 Screws
2 Fan screen
3 Nuts
4 Fan
In order to clean the fan, proceed as follows:
1. Turn off all DC and AC breaker/disconnects and
wait for 5 minutes for any residual voltages to
dissipate.
2. Disconnect the NTX from both the DC and AC
connections.
3. Wait for the fan to stop rotating.
4. Screw up 4 screws on the fan screen and remove
it carefully because the fan mounted behind and
the cables are not so long.
5. The fans are fastened with 4 nuts, remove them
to separate the fan screen and the fan. Then you
can clean the fan screen and the fan separately.
6. To clean the fan, use a soft brush or cloth. Do not
use air pressure for clean the fan. This will dam-
age the fan.
7. When the fan is clean, reinstall it using the above
steps in reverse order.
8. Do not blow air through the fan or fan screen
while the fan plate is assembled on the NTX.
9.2 Checking the DC Disconnect
Under normal use condition, the DC Disconnect does
not need maintenance.
It is recommended to:
· Check the DC Disconnect regularly.
· Operate the DC Disconnect 12 times once a year.
Operating the switch will clean the contacts and will
extend the life of the DC Disconnect.
