Hitachi RAS-(4-12)HNP(1)(E) - Removing Transistor Module (IPM)

10 Servicing
410
SMGB0087 rev.0 - 12/2013
Removing Transistor Module (IPM)
1 Disconnect all the wirings connected to the transistor module.
2 Remove the connectors CN2, CN3, CN206, PCN301 and PCN302
from the transistor module.
3 Disconnect the wirings of P N U V W on the transistor module.
4 Remove 4 M4 xing screws on the transistor module.
5 Remove the transistor module from the electrical box.
6 Reassemble the parts in the reverse order of removing order.
N O T E
Identifyterminalwiththemarkbandwhenreassemblingtoavoidinco-
rrectwiring.
1
Screws for transistor module
(M4)
2
Screw (M5)
3
PCN301
4
PCN302
5
Screws for PCB (M3)
6
CN3
7
Inverter PCB
8
CN206
9
CN2
10
LED201
10.6.15 Removing other electrical components
1 Remove the service cover following “10.6.1Removingservicecover”in this chapter.
2 Open the P plate turning counter clockwise approximately 90° following “10.5.9Openingelectricalbox(P-Mounting
Plate)”.
• Check that the LED201 (red) on Inverter is OFF when the P plate is opened.
N O T E
• Toconnectwiringatreassembling,ensurethattheterminalnumbersandwiringmarkbandcodesarematched.Ifcon-
nectionsarewrong,thereisthepossibilityofwrongoperationandtocausedamagetoelectricalparts.
• FromthePowerWires(UPhase,VPhase,WPhase)ofInverterCompressor(MC1),pleasemakesurethatthe2wires
ofUPhaseandVPhasepassthroughthecurrentsensors(CTU•CTV)ofInverterPCB(PWB3).Alsomakesurethat
thePowerWireofUPhaseisconnectedtotheUPhasesideofcurrentsensor(CTU),andthatVPhaseisconnected
totheVPhasesideofcurrentsensor(CTV).Ifthecombinationiswrong,itcouldbeacauseofwrongoperationand
damage.
• WhenattachingthePCB,orwhenattachingthepartsattachedtothePCB,payattentionnottoclampanywiringbet-
weenplatesorelectricalcomponents.
• Screws,BushesandCollarsareusedtoxtheInverterPCB.PleaseuseBushesandCollarswithoutfaultwhenatta-
chingtheInverterPCB.Failuretodosomaycausewrongoperation.
• WhenreplacingtheControlPCB,pleasesettheDipSwitcheswiththesamecongurationasthePCBbeforereplace-
ment.Wrongsettingsmaycausewrongoperation.Also,pleaseconrmthereplacementinstructionssuppliedwiththe
PCBsoldasaservicepart.
• DonotapplytoomuchforcetotheelectricalpartsmountedonthePCBortothePCBitself.Itmaycausefailureofthe
PCB.