Hitachi RPI-4.0FSN4E - Removing Thermistors for Freeze Protection, Gas Pipe, Outlet Air and Inlet Air

10 Servicing
380
SMGB0077 rev.0 - 01/2013
10.9.11 Removing Thermistors for Freeze Protection, Gas Pipe, Outlet Air and Inlet Air
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For RPK-(0.8-1.5)FSN(H)3M
1 Remove the front panel according to the “Removing Front Panel” chapter.
2 Remove the electrical box according to the “Removing Electrical Box” chapter.
3 Remove the plastic band (A) clamping each thermistor.
Plastic Band (A)
4 Removing Freeze Protection Thermistor
a. The freeze protection thermistor is xed by thermistor pipe with a thermo clip. Remove the thermistor from the
thermo clip.
b. When attaching the freeze protection thermistor, attach it in the reverse procedure. Insert the thermistor into the
thermistor pipe and x it with the thermo clip.
c. After attaching the thermistor, clamp the wirings for the expansion valve, freeze protection thermistor, gas pipe
thermistor and inlet air thermistor with one (1) plastic band.
5 Removing Gas Pipe Thermistor
a. The gas pipe thermistor is xed by the thermistor holder. Remove the thermistor holder from the thermistor. Then,
the gas pipe thermistor can be removed.
b. When attaching the gas pipe thermistor, attach it in the reverse procedure. Get the thermistor rmly attached to the
inside of the piping with the thermistor holder.
c. After attaching the thermistor, clamp the wirings for the expansion valve, freeze protection thermistor, gas pipe
thermistor and inlet air thermistor with one (1) plastic band.
Gas Pipe Thermistor
(Left Side of Gas Pipe)
Freeze Protection Thermistor
Freeze Protection
Thermistor
Termistor Pipe
Termo Clip
6 Removing Inlet Air Thermistor
a. The inlet air thermistor is clamped with 1 plastic band (B) to the resin component for xing the thermistor inserted
into the heat exchanger ns. Remove the plastic band to remove the thermistor.
b. When attaching the inlet air thermistor, attach it to the resin component with the plastic band in the reverse procedure.
Take care during the work so that the wiring for the thermistor will not come into contact with metal edges of ns or
side plates of the heat exchanger.
c. After attaching the thermistor, clamp the wiring for the expansion valve, freeze protection thermistor, gas pipe
thermistor and inlet air thermistor with 1 plastic band.