Maintenance
48
Replacement
REFUsol 100K
982059/02
2020-11
10.Plug the supply cable of the ConnectionBox fan into
the adapter board.
11.Lift the PowerUnit with the help of 2 people with one
hand on the handle and one hand on top of the inver
-
ter.
12.Carefully insert the PowerUnit into the device hol
-
der of the ConnectionBox.
13.Check fan for function.
14.Carefully press the PowerUnit in its intended place
and hold it. Make sure that the cables are not pin
-
ched or damaged when closing.
15.Tighten the M8 screws hand-tight.
16.Tighten all four M8 bolts crosswise with a tightening
torque of 20 Nm.
9.2.3 Checking or Replacing the PV Fuses
Replace the fuses if the fuses are damaged or the
fuse value is to be set depending on the type of photo
-
voltaic module used.
✅
Electrical systems are disconnected according to
the 5 safety rules.
✅
AC switch to the inverter is opened.
✅
DC switch is opened.
✅
Wait 2 minutes until the stored energy is dis
-
charged.
▷
If no additional DC switch is available to disconnect
the live power from the photovoltaic generator,
carry out maintenance work only at night.
1. Open the locks of the DC fuse area.
2. Remove the cover of the DC fuse section. Do not
mechanically stress the PE connection to the cover.
3. Check the fuses optically.
4. If necessary, replace the fuses with new ones. Use
the fuse pliers to remove the fuse. The fuse pliers is
available as an option and can be ordered under
Art. No. 922027.
5. Check the function of the new fuse.
6. Insert the new fuse into the fuse holder with the fuse
pliers.
7. Attach the cover and close the latches.
