Fronius Symo - Replacing the DC Disconnector

126
Replacing the DC
disconnector
Removing the DC disconnector:
Remove the inverter from the wall bra-
cket (see "Opening and closing the de-
vice")
Disconnect the AC and DC leads from
the terminal block of the DC dis-
connector
Remove the retaining clip (1) and con-
trol switch with shaft (2)
Undo the three 4x20 TX20 screws (3)
and remove the strain relief clamp
Undo the four 4x9 TX20 screws (4) and
remove the DC disconnector
Inserting the DC disconnector:
Insert the new DC disconnector and
secure it with four 4x9 TX20 screws (4)
[2 Nm]
Fix the strain relief clamp using three
4x20 TX20 screws (3)
[3-4 turns]
(1)(2)
WARNING! Observe the safety
rules (see the beginning of the
"Safety" section)
WARNING! Take safety precau-
tions. Observe the safety rules -
DC voltage present!
1
2
3
(4) (4)
(3)(3)(4)
4
5
(4) (4)
(3)(3)(4)
1
2