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Hitachi RAS-4.5HNBRKQ1 - Removing 4-Way Valve

Hitachi RAS-4.5HNBRKQ1
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138
MAINTENANCE
1.12 Removing 4-Way Valve
(1) Remove the service cover, the upper cover, the side cover, and the rear cover.
(2) Recover the refrigerant from check joints.
(3) Remove the 4-Way valve coil.
(4) Remove the 4-Way valve assemblies from the secured positions (four brazed parts).
(a) Remove the 4-Way valve and the gas stop valve while cooling the valve bodies with a wet cloth.
(b) Perform the brazing work while keeping the ame away from electrical wiring and piping insulation.
(5) Remove the 4-Way valve from the assemblies (four parts). Remove/Attach the 4-Way valve while cooling
the valve bodies with a wet cloth.
(6) To attach the new 4-Way valve after replacement, reverse the removal procedure.
Tool
Phillips Screwdriver, Charging Hose, Torch, Wet
Cloth, Adjustable Wrench
Model3~3.5HP
Model4~6.5HP
Model7~12HP

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