Hitachi UTOPIA RAS-4HVRP2E - Removing Solenoid Valve

9 Servicing
RAS-(4-6)H(V)(R/N)(C/P)2E
SMGB0136 rev.0 - 07/2021
198
13 Braze the connections -3- between the expansion valve -2- and the piping until the valve is properly installed.
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14 Allow the brazing to cool down for a few minutes.
15 Remove all used protections and wet cloths.
16 Assembly the Electronic expansion valve coil -1- according to the item “9.3.10Removingelectronicexpansionvalve
coil”.
17 Charge new refrigerant according to the item “3.4Refrigerantcharge”.
18 Assembly the electrical box according to the item “9.3.6Removingelectricalbox”.
19 Assembly the rear cover according to the item “9.3.4Removingbottomservicecoverandrearcover”.
20 Assembly the service cover according to the item “9.3.1Removingservicecover”.
9.3.14 Removing Solenoid valve
1 Remove the service cover according to the item “9.3.1Removingservicecover”.
2 Disassembly the electrical box according to the item 9.3.6Removingelectricalbox”.
3 Collect the refrigerant according to the item “3.4Refrigerantcharge”.
4 Remove the solenoid valve coil -1- according to the item “9.3.11Removingsolenoidvalvecoil(SVA)”.
5 Move all cables and remove the necessary components to leave the working area free.
6 Protect all the elements located around the solenoid valve and the brazing area with a wet cloth.
7 Charge the stop valve for liquid with nitrogen and rell the solenoid valve piping.
8 Heat the brazed connection -3- between the solenoid valve -2- and the piping with a brazing unit until the brazing is
undone.
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9 Remove the pipes from the solenoid valve.
10 Seal the pipes with a tape to protect the solenoid valve and the cycle assembly from dust.
11 Remove solenoid valve -2- from the assemblies and install the new one.
12 Protect the new solenoid valve -2- with a wet cloth.
13 Braze the connections -3- between the solenoid valve -2- and the piping until the valve is properly installed.
14 Allow the brazing to cool down for a few minutes.