Replacing The Power Module; Removing The Power Module; Fastening The Power Module; Replacing The Fan - Bosch BAT 645 Instandsetzungsanleitung

en 20 | BAT 645 | Assembly / disassembly
4.4

Replacing the power module

!
Only the installation and removal operations
described in this document may be performed on
the power module.
!
The circuit board in the power module must not
be detached from the heat sink, as otherwise the
warranty for material defects is voided.
2 3
1
Fig. 11: Fastening the power module in the lower part of housing
1 Hex nut cover
2 Hex nut
3 Washer
4 Spacer ring
5 Setscrew
4.4.1

Removing the power module

1. Disconnect BAT 645 from the mains voltage system.
2. Remove power supply cable from BAT 645.
3. Remove housing caps (see sec. 4.1).
4. Remove top part of housing (see sec. 4.2).
5. Remove connecting cables at the connection for the
battery charging cable from the power module (see
sec. 6).
6. Disconnect connecting cables at the power inlet
socket connector from the power module (see sec.
6).
7. Remove covers from the hex nuts (Fig. 11, item 1)
on the lower part of housing.
8. Use a hex key to hold the setscrews (Fig. 11, item 5)
and remove the hex nuts (Fig. 11, , item 2).
9. Remove the washers (Fig. 11, item 3).
10. Remove the power module.
4.4.2

Fastening the power module

1. Place spacer rings (Fig. 11, item 4) over the
setscrews (Fig. 11, item 5) on the power module.
2. Guide the setscrews on the power module through
the holes in the lower part of housing.
3. Placed washers over the setscrews.
4. Using the hex nuts, fasten the power module to the
lower part of housing.
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5. Attach covers to the hex nuts.
6. Attach connecting cables from the connection for
7. Attach connecting cables from the power inlet
8. Connect top part of housing to lower part of housing
9. Attach connecting cable from the M1 circuit board to
5
4 10. Place top part of housing on lower part of housing
4.5
1. BAT 645 to be disconnected from the mains voltage
2. Remove power supply cable from BAT 645.
3. Remove housing caps (see sec. 4.1).
4. Remove top part of housing (see sec. 4.2).
5. Remove the power module (see sec. 4.4.1) .
i
6. Disconnect the connecting cable for the fan from the
7. Remove Torx screws (Fig. 12, item 1) from the fan.
8. Replace the fan (Fig. 12, item 2).
Fig. 12:
1 Torx screws
2 Fan
9. Fasten new fan with Torx screws.
10. Attach connecting cable for the fan to slot X12 on
11. Fasten the power module in the lower part of
12. Attach connecting cables from the connection for
13. Attach connecting cables from the power inlet
14. Connect top part of housing to lower part of housing
15. Attach connecting cable from the M1 circuit board
16. Place top part of housing on lower part of housing
the battery charging cable to the power module (see
sec. 6).
socket connector to the power module (see sec. 6).
via PE cable (see sec. 6).
slot SV1 on the power module (see sec. 6).
and fasten with Torx screws.

Replacing the fan

system.
The fan is connected to the power module by a
connecting cable (see sec. 6).
power module.
2
1
Replacing the fan
the power module (see sec. 6).
housing (see sec. 4.4.2).
the battery charging cable to the power module (see
sec. 6).
socket connector to the power module (see sec. 6).
via PE cable (see sec. 6).
to slot SV1 on the power module (see sec. 6).
and fasten with Torx screws.
Robert Bosch GmbH