Johnson Controls HVWHP072B32S - Removing Reversing Valve Body (RVR1, RVR2)

4-36
SM-18006
MAINTENANCE
TURN OFF all POWER supply switches.
4.1.12.5 RemovingReversingValveBody(RVR1,RVR2)
(1) Remove the service cover and front cover according to Section 4.1.1 “Removing Service Cover and
Front Cover”.
(2) Remove the upper cover according to Section 4.1.3 “Removing Upper Cover”.
(3) Remove the rear cover according to Section 4.1.4 “Removing Rear Cover”.
(4) Remove the side cover R according to Section 4.1.6 “Removing Side Cover”.
(5) RemovetheelectricalboxaccordingtoSection4.1.8“RemovingElectricalBox”.
(6) Beforestartingthefollowingwork,collecttherefrigerantfromtherefrigerantcycleintoacylinder.
(7) Thereversingvalvesaresecuredatthepositionsshowninthegureonnextpage.
(8) Remove the reversing valve coils according to Section 4.1.11.5 “Removing Reversing Valve Coil”.
(9) Removethebrazingportionshownintheguresonnextpagebycoveringthereversingvalvesand
thestopvalveswithwetclothforcooling.
NOTES:
● Makesuretoremovethebrazingportionattheindicatedpositionsinthegures.Ifnot,leakagemay
occurwhenreassemblingthevalves.
● Connectthecharginghosetotheaccessportforthegasstopvalvebeforeremovingthebrazing.
(10)Removethereversingvalveassembly.
Removethebrazingasshownintheguresbycoveringthereversingvalvebodywithwetclothfor
cooling.
Removethebrazinginthefollowingorder:
(a)Brazingattherightandleftbranchpipesofthethreepipescomingfromthereversingvalvebody.
(b)Brazingatthecenterbranchpipeofthethreepipescomingfromthereversingvalvebody.
(11) Reassemblethereversingvalvebodyinthereverseprocedure.
NOTE:
Duringbrazingwork,coverthereversingvalvebodyandthestopvalveswithwetclothforcooling.