Hitachi RAW-35RHC - Outdoor Unit; Procedure for Disassembly and Reassembly the Outdoor Unit

! DANGER
• Disconnecttheunitsfromthepowersupplybeforetouchinganyoftheparts.Donottouchtheelectricalboxbeforediscon-
nectingitinordertoavoidanelectricalshock.
• Waitminimum10minutesormorefromallpowersupplieshavebeenturnedOFF.
• Whenhandlingtheelectricalbox,takecareofcomponents.Donotapplyexcessiveforcetothem,inordertoavoiddamaging
theelectricalcomponents.
• IncaseofreplacingHydraulicparts,drainwaterfromtheunititsneeded.CloseShutdownvalvesandopenthedrainvalves
(botheld-supplied).
! CAUTION
• Incaseofreplacingrefrigerantparts,collectrefrigeranttotheoutdoorunitbypumpdownprocedure.
• Donotexposetherefrigerantcycletotheatmosphereforalongperiodinordertoavoidmixingthewaterandforeignparti-
clesintotherefrigerantcycle.Afterremovingrefrigerantparts,replaceitquickly.Ifexposedforalongperiod,sealtheliquid
pipeandgaspipe.
• Allrefrigerant partsareconnectedbybrazing. Checktoensurewhetherthere areammable thingsaroundornotwhen
usingaburnerforpipeconnections,ifnot,oilexistingpipeinsidemayignite.
• Whenperformingbrazingwork,besidessecurityglovesitisamusttowearconvenienteyeprotection.
• Incaseofblockedorstackedparts,useappropriatedtoolsandeventuallylubricantstoreleasethem.
• Incaseofsharpededgedparts,ascovers,usesecurityglovestoavoidgettinginjured.
• TakecarewiththeLCDdisplayoftheunitcontrollerwhileremovingtheframe.
• Payattentionofnofallingotheservicecover.
• Takecarewhenremovingservicecover;thepartsinsidetheunitcouldbehot.
• Beforepowerontheunit,lltheDHWtankwithwaterfollowingtheproceduredescribedinsection“Filling the DWH tank
with water”.
5.1 Outdoor unit
5.1.1 Procedure for disassembly and reassembly the outdoor unit
1 Remove the service valve cover lock screws and lower
the cover to remove it.
2 Remove the top cover lock screw and raise the cover to
remove it.
3 Remove the electrical box lock screw.
4 Remove the terminal cover lock screw.
5 Remove each connector and earth cable from the lead
wire. Then,remove the electrical box .
5 Servicing
Outdoor unit
SMGB0135 rev.0 - 06/2020
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