Hitachi RPI-0.8FSG1 Service Manual page 170

SERVICING
(2.1 Outdoor Unit)
2.1.14 Removing Reversing Valve (RAS-24FSG1, RAS-30FSG1, RAS-24FS5 and RAS-30FS5)
Before starting this work, collect refrigerant into a cylinder from the cycle and turn off all power source
switches.
(1) Remove the front service panel according to the item 2.1.2 "Removing Front Service Panel".
(2) Remove the electrical box cover according to the item 2.1.15 "Removing Electrical Components".
(3) Remove all the field wiring at the terminal board for control between the indoor and outdoor units,
and power source terminal board.
(4) Disconnect the wiring connections and check
to ensure that two stop valves are open.
Terminal Board for
Control Circuit
(5) Disconnect the following to remove the reversing valve.
(a) Brazing Portion between Reversing Valve and Discharge Pipe.
(b) Brazing Portion of the Right and the Left Pipes of Three Pipes from the Reversing Valve.
(c) Brazing Portion of the Center Pipe of Three Pipes from the Reversing Valve
NOTE:
Cover the reversing valve with wet cloth to protect
it from excessively high temperature by a burner.
Brazing
2-30
TURN OFF all power source switches.
Power Source
Terminal Board
Stop Valve
Brazing
Brazing
Phillips Screwdriver, Spanner,
Tool Hexagon Wrench, Wet Cloth,
Burner, Pliers
Phillips Screwdriver, Spanner,
Tool Hexagon Wrench, Wet Cloth,
Burner, Pliers
RAS-24FSG1, 24FS5
30FSG1, 30FS5
RVR2