Daikin RXR28EV1B8 Service Manual Download | Manualshive

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Si001275

Four Way Valve

Removal Procedure

23

2

Pull out the electronic
expansion valve coil.

3

Remove the putty.

4

Heat up the 4 brazed
parts of the four way
valve. Disconnect them
in the order of (a) (b)
(c) (d).

Step

Procedure

Points

(R14026)

Electronic expansion
valve coil

Putty

(R5887)

(R14027)

(b)

(R18773)

(d)

(c)

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Summary of Contents for RXR28EV1B8

Page 1: ...REMOVAL PROCEDURE S E R V I C E M A N U A L Outdoor Unit Inverter Pair Type 2 8 4 2 5 0 kW Class Si001275...

Page 2: ...Service Manual Removal Procedure Outdoor Unit zHeat Pump RXR28EV1B8 RXR42EV1B8 RXR50EV1B8...

Page 3: ...ssembly Damper Assembly 5 4 Hygroscopic Fan Motor 7 5 Outdoor Fan Fan Motor 8 6 Humidifying Duct 12 7 Electrical Box 13 8 PCB 15 9 Sound Blankets 17 10 Thermistor Assembly 19 11 Reactor Partition Plat...

Page 4: ...nd remove the top panel 2 Disconnect the 5 relay connectors 3 Disconnect the connector for the humidifier fan motor Pull out the connector while pushing up the hook on the bottom side When installing...

Page 5: ...embly 1 Remove the 4 screws and remove the duct on adsorption side 2 Release the lead wire for the humidifying rotor motor from the hooks 3 Remove the 2 screws and remove the heater assembly The heate...

Page 6: ...3 Remove the humidifying rotor A heat catalyst black is applied on the upper side 3 Remove the humidifying rotor motor 1 Remove the 2 screws and remove the humidifying rotor motor Step Procedure Poin...

Page 7: ...ff the 2 tapes 2 3 Remove the 5 screws of the humidifying fan assembly Unfasten the 2 hooks while bending the right side panel 4 Remove the humidifying fan assembly The humidifying fan assembly should...

Page 8: ...oval Procedure 2 Remove the damper assembly 1 Remove the 3 screws 2 Remove the damper assembly 3 4 Remove the screw and remove the damper motor Disconnect the limit switch Step Procedure Points R18770...

Page 9: ...sassembling work Step Procedure Points 1 Remove the nut and remove the hygroscopic fan Nut size M6 When reassembling align the mark of the fan with the D cut section of the motor shaft 2 Remove the 3...

Page 10: ...ssembling work Step Procedure Points 1 Remove the shield plate Be careful not to forget to install not to lose and not to break the shield plate and the electrical box cover 1 Remove the screw 2 Relea...

Page 11: ...t panel 3 Remove the 4 screws and remove the front grille 4 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 1 Remove th...

Page 12: ...emove the fan motor 1 Disconnect the connector for the fan motor S70 2 Release the fan motor lead wire from the hooks 3 Remove the screw of the fan motor fixing plate Step Procedure Points S70 R5836 F...

Page 13: ...part 6 Unfasten the hook and release the fan motor lead wire When reassembling put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan 7 Remove the...

Page 14: ...minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the screw and remove the stop valve cover 2 Remove the screw and remove the humidifying du...

Page 15: ...the hook 2 Disconnect the connectors S20 S70 S72 S80 S90 S91 S20 electronic expansion valve coil S70 fan motor S72 humidifier fan motor S80 four way valve coil S90 thermistor assembly S91 humidifying...

Page 16: ...ed with the terminal board You can work without removing the terminal board 7 Disconnect the 4 connectors 8 Remove the screw and detach the earth wire 9 Detach the clamp for the thermistor assembly fr...

Page 17: ...s 2 Detach the radiation fin In working be careful not to break the PCB with the excessive force because the PCB and the radiation fin are adhered to one another When reassembling make sure to apply t...

Page 18: ...i001275 16 Removal Procedure 5 6 Remove the 2 screws Unfasten the 3 hooks of the electrical box 7 8 Remove the PCB from the electrical box Disconnect the connectors Step Procedure Points R18481 Hook R...

Page 19: ...on the back side of the right side panel Remove the 2 screws on the right side Lift the right side panel to unfasten the 2 hooks and remove it 2 Remove the sound blankets Since the piping ports on th...

Page 20: ...und Blankets Si001275 18 Removal Procedure 4 Open the sound blanket inner and pull it out 5 Pull the sound blanket bottom out Step Procedure Points R18483 Sound blanket inner R14022 Sound blanket bott...

Page 21: ...nts 1 Release the outdoor temperature thermistor from the guard net 2 Remove the 3 screws on the back side of the right side panel 3 4 Remove the 2 screws on the right side Lift the right side panel t...

Page 22: ...blanket carefully 7 8 Release the discharge pipe thermistor Remove the thermistor assembly Detach the discharge pipe thermistor while opening the thermistor fixing clip Be careful not to loose the cli...

Page 23: ...ff all power supplies before disassembling work Step Procedure Points 1 Remove the reactor 1 Remove the screw and remove the reactor 2 Remove the partition plate 1 Remove the 2 screws 2 Lift the parti...

Page 24: ...at Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry Note Before working make sure that the refrigerant gas is empty in the...

Page 25: ...Pull out the electronic expansion valve coil 3 Remove the putty 4 Heat up the 4 brazed parts of the four way valve Disconnect them in the order of a b c d Step Procedure Points R14026 Electronic expan...

Page 26: ...the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not dry N...

Page 27: ...Si001275 Electronic Expansion Valve Removal Procedure 25 3 Remove the putty 4 Heat up the 2 brazed parts and disconnect them in the order of a b Step Procedure Points R5893 b a R14030...

Page 28: ...nside the four way valve and the deterioration of the gaskets affected by heat Keep below 120 C For the sake of this wrap the four way valve with wet cloth and provide water so that the cloth does not...

Page 29: ...ector Be careful so as not to burn the compressor terminals or the name plate 3 Remove the protecting bushing 4 Remove the 2 nuts 5 Heat up the brazed part of the discharge side and disconnect Step Pr...

Page 30: ...Compressor Si001275 28 Removal Procedure 6 Heat up the brazed part of the suction side and disconnect 7 Lift the compressor and remove it Step Procedure Points R5900 R5901...

Page 31: ...Revision History Month Year Version Revised contents 02 2013 Si001275 First edition...

Page 32: ...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 acces...

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