Daikin altherma 3 M Service Manual page 240

3 | Components
Service manual
240
2 Apply new thermal interface grease to the refrigerant pipe contact surface of
the heat sink (on the main PCB). Distribute the grease as evenly as possible.
CAUTION
ALWAYS apply new grease on the PCB heat sink. NOT doing so may cause the PCB to
fail due to insufficient cooling.
3 Install the switch box on the correct location in the outdoor unit. Take the
following into account:
▪ Guide the sheet metal plate of the service port in front of the switch box
mounting plate to correctly install and avoid pipe bending.
▪ Slightly tilt the refrigerant pipe forward (±10°) and avoid that the thermal
interface grease gets smeared everywhere.
▪ Hook the switch box mounting plate in the support plate on the right hand
side.
4 Install and tighten the 4 switch box fixation bolts.
i
a Service port
b Connector
c Tie strap
d Faston connector (compressor)
e Connector (compressor thermal protector)
f Bolt (heat sink cover)
g Heat sink cover
h Refrigerant pipe
i Fixation bolt (switch box)
5 Correctly install the refrigerant pipe on the heat sink (proper contact with the
thermal interface grease on the heat sink of the switch box). Install the heat
sink cover.
6 Install the 2 bolts on the heat sink cover and tighten the bolts.
h c b
b e c
b
i
f
g
c
f
i
d
a
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03