Fitting The Secondary Diode - Fronius Transpocket 1500 Erdstrom Serviceanleitung, Ersatzteilliste

Fitting the
secondary diode
Fig.9
All parts must be kept clean! Any contamination between the secondary diode and the
heat sink will impair the heat-transfer.
Fig.10
Fig.11
(60)
Note! When mounting the secondary diode, make sure that the U-shaped
recess (60) is pointing towards the transformer.
(50) (61)
(31) (31)
58
- Pre-clean the heat sink with contact
spray and a non-linting cloth
- Remove any contamination or
unevenness from the heat sink with
fine abrasive paper (grain P 500 or
finer)
- Clean the heat sink with contact spray
and a non-linting cloth
Note! There already is a heat-
transfer film affixed to the
secondary diode.
- Do not apply any heat-transfer
compound in addition to this film
- Do NOT peel off the heat-transfer film
from the underside of the secondary
diode
- Put the diode holder (50) over the
secondary diode
- Insert 4 spacers (61) into the diode
holder
- Place the secondary diode, complete
with the diode holder and the inserted
spacers (61), onto the heat sink
- Slightly tighten the M4x14-TX20
screws (31)
Note! Before you tighten the
M4x14-TX20 screws (31), the
secondary diode must be lying
completely flat on the heat sink,
without any gaps.
- Tighten the M4x14-TX20 screws (31)
with a torque of 2,1 Nm