10 Maintenance
Replace type 2 DC surge protection devices
Installation and Operation Manual M125HV EU V3 EN 2021-07-12
132
10.9 Replace type 2 DC surge protection
devices
DANGER
Electric shock
Potentially fatal voltages are present in the
inverter during operation. When the inverter
is disconnected from all power sources, this
voltage remains in the inverter for up to 135
seconds.
►
Perform the instructions listed in “10.4
Making preparations for maintenance work
- disconnecting the inverter from the grid
(AC) and solar modules (DC)”, page 104
before
you start work on the inverter!
∫
The surge protection devices are replaced as
a block. You can obtain spare parts from Delta
Customer Service. You can find the contact infor
-
mation on the back of this document.
∫
Some of the attachment screws for the surge
protection devices are very small and can eas-
ily be dropped into the junction box. You should
therefore use a magnetic screwdriver.
1. Remove the cover from the DC surge protection devices.
2. Unscrew and pull out the power supply cables of the DC
surge protection devices.
