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Daikin RKV50NRV16, Service Manual

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Daikin RKV50NRV16 Service Manual Download Page 15

Si001355E

Electronic Expansion Valve ASSY

Removal Procedure

13

2

Pull out the electronic 
expansion valve coil.

3

Remove the putty.

4

Heat up the 2 brazed 
parts and remove the 
electronic expansion 
valve.

Step

Procedure

Points

Electronic expansion 
valve coil

(R19457)

(R19458)

Brazed part

Electronic expansion 
valve

(R19459)

Summary of Contents for RKV50NRV16

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L 5 0 6 0 kW Class Outdoor Unit Inverter Pair Type Si001355E ...

Page 2: ...Service Manual Removal Procedure Outdoor Unit zCooling Only RKV50NRV16 RKV60NRV16 ...

Page 3: ...Contents 1 Outer Panels 2 2 Outdoor Fan Fan Motor 3 3 Electrical Box PCB 5 4 Thermistor ASSY 10 5 Sound Blankets 11 6 Electronic Expansion Valve ASSY 12 7 Compressor 14 Note The illustrations may be slightly different depending on the model ...

Page 4: ...and remove the top panel 2 Remove the 9 screws of the front panel 3 Unfasten the right side hooks and remove the front panel The discharge grille has 2 projections to prevent its rotation Press the projection from the rear side and rotate the discharge grille to remove it 4 Remove the screw and remove the discharge grille R19515 Top panel Front panel Projection rear side Discharge grille R19429 re...

Page 5: ...ep Procedure Points 1 Disconnect the connector S70 S70 fan motor 2 Release the fan motor lead wire from the groove of the partition plate and the 4 hooks on the electrical box 3 Remove the nut and remove the outdoor fan Nut size M6 When reassembling align the mark of the outdoor fan with the D cut section of the motor shaft R19430 S70 Hook R19360 Outdoor fan R19431 10 mm 0 39 inch R18954 ...

Page 6: ...ough the back of the fan motor so as not to be entangled with the outdoor fan When reassembling fit the lower hooks into the bottom frame 5 6 7 Unfasten the 2 hooks at the bottom and remove the fan motor fixing frame Open the 2 hooks and release the fan motor lead wire Remove the 4 screws and remove the fan motor Step Procedure Points R19432 Fan motor fixing frame R18433 Hook R19433 Fan motor R193...

Page 7: ...ore after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the electrical box S70 fan motor 1 Disconnect the connector S70 2 Disconnect the connector S20 S20 electronic expansion valve coil 3 Disconnect the connector S40 S40 overload protector S70 R19434 S20 R19435 S40 R19436 ...

Page 8: ...re 4 Cut the clamp and disconnect the connector S90 5 Disconnect the relay connector for the compressor S90 thermistors 6 Remove the screw and remove the stop valve cover Step Procedure Points R19363 R19437 Clamp S90 R19438 R19440 Stop valve cover ...

Page 9: ...rews and remove the wire fixture 8 Remove the 7 screws and disconnect the connecting wire and the power supply wire 9 Remove the 2 screws on the right side panel Step Procedure Points R18441 Wire fixture R18442 Connecting wire Power supply wire R19364 Right side panel ...

Page 10: ...e 10 Remove the screw on the partition plate 11 Lift and remove the electrical box 2 Remove the PCB 1 Remove the screw and remove the electrical box cover Step Procedure Points Partition plate R19441 Electrical box R19442 R19443 Electrical box cover ...

Page 11: ...val Procedure 9 2 Remove the 7 screws of the PCB 3 Remove the earth ground screw upper 4 Cut the clamp of the relay connector harness 5 Remove the PCB Step Procedure Points R19444 PCB R19445 Earth ground wire upper R19439 Clamp R19446 ...

Page 12: ...bling insert the 2 lower hooks and the upper hook of the back 3 Remove the right side panel 4 Release the discharge pipe temperature thermistor Be careful not to lose the fixture for the thermistor 5 Pull out the outdoor heat exchanger thermistor and remove the thermistor ASSY Be careful not to lose the clip for the thermistor Outdoor temperature thermistor R19516 R19517 Right side panel R19448 Di...

Page 13: ...cedure Points 1 Untie the string and open the sound blanket outer Since the piping ports are torn easily remove the sound blanket carefully 2 Pull the sound blanket outer out 3 Remove the sound blanket top 4 Pull the sound blanket inner out 5 Pull out the sound blanket bottom Sound blanket outer R19450 Sound blanket top R19451 R19452 Sound blanket inner R19453 Sound blanket bottom ...

Page 14: ... all the refrigerant gas Restore the piping by non oxidation brazing Note Before working make sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes ...

Page 15: ...ure 13 2 Pull out the electronic expansion valve coil 3 Remove the putty 4 Heat up the 2 brazed parts and remove the electronic expansion valve Step Procedure Points Electronic expansion valve coil R19457 R19458 Brazed part Electronic expansion valve R19459 ...

Page 16: ...sure that the refrigerant gas is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Do not use a metal saw for cutting pipes by all means because the sawdust comes into the circuit When withdrawing the pipes be careful not to pinch them firmly with pliers The pipes may get deformed Provide a protective sheet or a steel plate so that the brazing flame cannot ...

Page 17: ... 15 4 Heat up the brazed part of the discharge side and disconnect 5 Heat up the brazed part of the suction side and disconnect 6 Remove the 3 nuts of the compressor 7 Lift the compressor up and remove it Step Procedure Points R19462 R19463 ...

Page 18: ...Revision History Month Year Version Revised contents 11 2013 Si001355E First edition ...

Page 19: ...ies supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion z Read the User s Manual carefully before using this product The User s Manual provides important safety instructio...

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