Daikin 3 HP Series Service Manual Download | Manualshive

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REMOVAL

PROCEDURE

S E R V I C E M A N U A L

Outdoor Unit

Inverter

Pair Type

3 HP Class

Si281308

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Summary of Contents for 3 HP Series

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 3 HP Class Si281308 ...

Page 2: ...Service Manual Removal Procedure Outdoor Unit Applicable Models zHeat Pump RZQ72KMV2C ...

Page 3: ...es 2 2 Procedure to Remove Fan Motor Propeller Fan 6 3 Procedure to Remove El Compo Box 10 4 Procedure to Remove PCB 15 5 Procedure to Remove Sound Blanket 18 6 Procedure to Remove Four Way Valve 20 7 Procedure to Remove Electronic Expansion Valve 21 8 Procedure to Remove Compressor 23 ...

Page 4: ...s or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the panels and plates Take care not to cut your finger by the fins of the heat exchanger 1 Loosen the 4 screws and lift the top panel 2 Loosen the 4 screws and remove the discharge grille Top panel Outdoor air thermistor Heat exchanger Discharge grille ...

Page 5: ...ille has 4 hooks Slide the discharge grille upwards and remove it 3 Loosen the 6 screws of the front panel 4 Press the front panel and undo the hooks Lift the clamp plate and remove it Step Procedure Points Front panel Clamp plate Press the front panel Lift the clamp plate upwards ...

Page 6: ...e left side hooks and then the right side hook Remove the front panel Lift the front panel and remove it while pushing the left side panel inwards Lift the front panel and undo the right side hook Fit the right side of the front panel first when installing Step Procedure Points ...

Page 7: ...nd Plates Removal Procedure 5 2 Remove the stop valve cover 1 Loosen the screw of the stop valve cover 2 Pull down the stop valve cover to undo the hooks and remove it The stop valve cover has 6 hooks Step Procedure Points Stop valve cover ...

Page 8: ...re disassembling work Step Procedure Points Remove the top panel and the front panel 1 Remove the el compo box cover This procedure is not necessary to remove the propeller fan only 1 Loosen the screw on the back of the shelter 2 Undo the 2 hooks and remove it The hooks have been released since the front panel was removed 3 Release the 4 hooks of the el compo box cover and remove it Shelter Hooks ...

Page 9: ...Si281308 Procedure to Remove Fan Motor Propeller Fan Removal Procedure 7 2 Remove the fan motor 1 Disconnect the connector for fan motor S70 Step Procedure Points S70 ...

Page 10: ...The illustration shows arrangement of the fan motor lead wire 3 Unscrew the washer fitted nut M10 of the propeller fan with a spanner Align mark of the propeller fan with D cut section of the motor shaft when reassembling Step Procedure Points Fan motor lead wire Propeller fan ...

Page 11: ...peller Fan Removal Procedure 9 4 Remove the 4 screws from the fan motor 5 Pull the fan motor out Put the lead wire through the back of the motor when reassembling so as not to be entangled with the propeller fan Step Procedure Points Fan motor ...

Page 12: ...es or more after turning off all power supplies before disassembling work Step Procedure Points Remove the top panel and the front panel 1 Remove the shield plate 1 Loosen the 2 screws 2 Slide the cover upward to undo the 1 hook on the bottom left and then remove the plate 3 Disconnect the 2 power supply cables and the 1 earth wire Shield plate ...

Page 13: ...e to Remove El Compo Box Removal Procedure 11 4 Disconnect the 2 earth wires 5 Loosen the 3 screws of the right side panel 6 Loosen the fixing screw of the el compo box Step Procedure Points Earth wires Right side panel ...

Page 14: ...hook of the upper back when reassembling 7 Disconnect the relay harness for fan motor 8 Disconnect the connectors of the front side S20 electronic expansion valve S40 overload protector S80 four way valve S90 thermistors discharge pipe outdoor air heat exchanger Step Procedure Points Hook Hooks S40 S20 S90 S80 ...

Page 15: ...to Remove El Compo Box Removal Procedure 13 9 Disconnect the relaying wire connector for the compressor 10 Release the clamp by pliers 11 Release the clamp and undo the wire from the hook Step Procedure Points Clamp Hook ...

Page 16: ...Procedure to Remove El Compo Box Si281308 14 Removal Procedure 12 Lift the el compo box and remove it Step Procedure Points El compo box ...

Page 17: ...s or more after turning off all power supplies before disassembling work Step Procedure Points Remove the el compo box 1 Remove the PCB 1 Disconnect the connectors for the control PCB S52 S102 2 Undo the 4 clamps by pliers 3 Loosen the fixing screw of the cable way board and disconnect the earth wire S52 S102 Clamps Earth wire ...

Page 18: ...ocedure 4 Undo the hook on the right 5 Open the cable way board 6 Disconnect the harnesses 1 Black 2 White 3 Red L1 Black L2 Brown N1 White N2 Blue 7 Disconnect the 2 harnesses for the reactor HR1 HR2 Step Procedure Points 1 2 3 L1 N1 N2 L2 HR1 HR2 ...

Page 19: ...Si281308 Procedure to Remove PCB Removal Procedure 17 8 Loosen the 3 fixing screws for the main PCB 9 Undo the 4 hooks 10 Lift up and remove the PCB Step Procedure Points Hooks ...

Page 20: ...r more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the sound blanket back 2 Remove the sound blanket outer Since the piping ports on the sound blanket outer are torn easily remove the blanket carefully 3 Remove the sound blanket top upper Sound blanket back Sound blanket outer Sound blanket top upper ...

Page 21: ... Release the discharge pipe thermistor Pay attention to the direction of the clip so as not to touch the lead wire of the thermistor when reassembling 7 Cut the clamp by nippers Disconnect the outdoor unit heat exchanger thermistor Clamps should be always available Fix it as it was before Step Procedure Points Sound blanket top lower Sound blanket inner Clip Discharge pipe thermistor Clamp Outdoor...

Page 22: ...g Braze it quickly when no nitrogen gas can be used 2 It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth will not be dried and avoid excessive heating Keep below 120 C In case of the difficulty with gas brazing machine 1...

Page 23: ...re to Remove Electronic Expansion Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the electronic expansion valve coil 2 Remove the sheets of putty Electronic expansion valve coil ...

Page 24: ...es and so on which were heated up by a gas brazing machine so as not to get burnt your hands Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas 3 Heat up the 2 brazed parts of the electronic expansion valve and disconnect Be sure to apply nitrogen replacement when heating up the brazed part Step Procedure Points Electronic expansi...

Page 25: ...re to wait for 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal cover 2 Disconnect the lead wires of the compressor Be careful so as not to burn the compressor terminals or the name plate Make a note U red V yellow W blue Terminal cover W U V ...

Page 26: ...gerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals or the name plate Be careful so as not to burn the heat exchanger fin Warning Since it may happen that refrigeration oil in the compressor will catch fire p...

Page 27: ... gas Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries Be careful so as not to burn the compressor terminals or the name plate 7 Heat up the brazed part of the discharge side and disconnect 8 Heat up the brazed part of the suction side and disconnect Be careful so as not to burn the heat exchanger fin Warning Since it may happen that refrigeration o...

Page 28: ...Revision History Month Year Version Revised contents 01 2013 Si281308 First edition ...

Page 29: ...oduct The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be inst...

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