- 175 -
000973AG
8 - Maintenance
R
eplacing the DC surge arrester boards (-SX/SX2 models only)
Replacing the DC surge arrester boards may be necessary in the
following circumstances:
1. “Alarm” LED flashing, “Power” LED steady ON.
2. Presence of “W018” Error in Inverter Log section of web user interface.
3. The inspection window of DC surge arrester cartridge is RED.
The DC overvoltage surge arrester board
53
is placed inside the wiring
box
02
and is accessible after opening both fuse boards (positive and
negative).
C3
MP7
MP5
MP3
MP9
C2
MP2
MP1
MP8
C1
MP4
MP6
T
R S
Pb-free
3P20
CH5
CH6
CH1
CH2
CH3
CH4
34
2
MP11
1
J9
J21
1
MP2
C38
MP19
MP5
U2
MP8
MP13
U8
U5
U11
C3
C17
C21
C26
2
C18
C27
J6
2
C42
J24
J13
J7
J26
MP17
J23
1
J10
MP3
J25
1
C43
MP20
MP6
MP14
U3
MP9
U9
U6
U12
33
J1
1
MP10
J14
1
2
C1
C13
C19
C22
K1
2
C14
C23
J2
2
J16
J11
C39
J18
J3
MP15
J15
1
J8
MP1
J17
1
C40
MP18
MP4
U1
MP7
MP12
U7
U4
U10
C15
C2
C20
C24
C16
C25
2
J4
2
J12
C41
J20
J5
J22
MP16
J19
MP10
J14
C1
C13
C19
C22
K1
C14
C23
J2
J16
J11
C39
J18
J3
MP15
J15
J8
MP1
J17
C40
MP18
MP4
U1
MP7
MP12
U7
U4
U10
C15
C2
C20
C24
C16
C25
J4
J12
C41
J20
J5
J22
MP16
J19
J9
J21
MP2
C38
MP19
MP5
U2
MP8
MP13
U8
U5
U11
C3
C17
C21
C26
C18
C27
J6
C42
J24
J13
J7
J26
MP17
J23
J10
MP3
J25
C43
MP20
MP6
MP14
U3
MP9
U9
U6
U12
J1
MP11
R
S
T
N
C3
MP7
MP5
MP3
MP9
C2
MP2
MP1
MP8
C1
MP4
MP6
T
R S
Pb-free
3P20
CH5
CH6
CH1
CH2
CH3
CH4
34
2
MP11
1
J9
J21
1
MP2
C38
MP19
MP5
U2
MP8
MP13
U8
U5
U11
C3
C17
C21
C26
2
C18
C27
J6
2
C42
J24
J13
J7
J26
MP17
J23
1
J10
MP3
J25
1
C43
MP20
MP6
MP14
U3
MP9
U9
U6
U12
33
J1
1
MP10
J14
1
2
C1
C13
C19
C22
K1
2
C14
C23
J2
2
J16
J11
C39
J18
J3
MP15
J15
1
J8
MP1
J17
1
C40
MP18
MP4
U1
MP7
MP12
U7
U4
U10
C15
C2
C20
C24
C16
C25
2
J4
2
J12
C41
J20
J5
J22
MP16
J19
MP10
J14
C1
C13
C19
C22
K1
C14
C23
J2
J16
J11
C39
J18
J3
MP15
J15
J8
MP1
J17
C40
MP18
MP4
U1
MP7
MP12
U7
U4
U10
C15
C2
C20
C24
C16
C25
J4
J12
C41
J20
J5
J22
MP16
J19
J9
J21
MP2
C38
MP19
MP5
U2
MP8
MP13
U8
U5
U11
C3
C17
C21
C26
C18
C27
J6
C42
J24
J13
J7
J26
MP17
J23
J10
MP3
J25
C43
MP20
MP6
MP14
U3
MP9
U9
U6
U12
J1
MP11
R
S
T
N
20
19
53
Procedure for replacing one of the DC surge arrester boards:
Some inverter parts may be subject to voltages that could be hazardous for the operator.
1.
Before performing any work on the inverter, refer to “Inverter total de-
energization and safe access” chapter on this manual to know all the
necessary step to safely operate on the inverter.
2.
Open the front wiring box cover
07
.
3.
Remove the screw and the DC protective shield
60
(picture
A
)
4.
Open the positive fuse board
• Remove the two M5 screws from the positive string fuses plate
19
.
• Tilt the positive string fuses plate
19
.
• Use a screwdriver, to lock the positive string fuses plate ( picture
B
)
19
A
B