Hitachi RAS-(4-12)HNP(1)(E) - Page 417

10 Servicing
403
SMGB0087 rev.0 - 12/2013
10
1 Thermistor holder
2
Holder
3
Td Thermistor
4
Thermistor xing plate
5
Rubber cap Th Thermistor
6
Indication of terminal number
7
Terminal box cover
8
Compressor
9
Compressor wires
10
Fix it with screw
11
Compressor wires (3 wires)
A
Details for compressor terminals
N O T E
• Compressor pipingmust be connectedby brazing. MAKESURE that anyammable material isnot around before
heatingwithburnerfortheoilinsidethepipingmayameup.
• Donotexposetherefrigerantcycletotheatmosphereforalongperiodtoavoidmoistureordustintothecycle.Besure
toreplacethecompressorimmediatelyafterremoving.Sealthesuctionanddischargepipeswhentherefrigerantcycle
isleftunattachedforalongperiod.
• Removethecapofnewcompressorrightbeforethereplacement.Beforemountingthecompressorsealthesuction
anddischargepipeswithatapetoprotectthecompressorfromdust.Removethetapewhenblazingthepipe.
• Forpipingatreassemblingensurethatthecompressorterminalnumbersandwiringmarkbandcodesarematched.
Incorrectwiringnumbersmayresultininverserotationanddamageofthecompressor.
6 Remove the suction pipe and discharge pipe from the compressor.
N O T E
Besuretoseparatetheblazingburneramesufcientlyfromthewiresandelectricalcomponentsaroundthebrazed
partinordertoavoidburning.
7 Remove 2 nuts which x the compressor and remove it by lifting it up with inclining forward.
N O T E
Toremovethecompressortheliquidstopvalvepipeshouldbemoved(bent)totherightsidehand.PAYCLOSEAT-
TENTIONnottocrushtobreakthepipe.
8 When brazing the replaced compressor quickly perform the brazing while the compressor side piping is cooled with wet
cloth in order to avoid the brazing material from entering the compressor.
N O T E
PAYCLOSEATTENTIONnottoletthellermetalenterintothecompressorwhichmayresultincompressordamage.