Euro-Line AER507SH Technical & Service Manual Download Page 16 | Manualshive

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13

Outdoor Unit AER507SH - AER509SH

Air discharge

Air intake

96

608

247

225

4 – ø12 holes

Narrow tube service valve
ø6.35 (1/4")

84

57

Wide tube service valve
ø9.52 (3/8")

220

*

380

790

24

525

17

4 – ø3.1 holes

336

380

<Location of Service Valve>
Service valves are located behind the side panel.
See the illustration below (*).

N O T E

Unit : mm

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Summary of Contents for AER507SH

Page 1: ...AWR509HL AER509SH AWR512HL AER512SH 7 1 6 59 0 18 63 7 6 67 0 5 21 7 21 5 0 8180 032 0 05 99 AWR508HL AER507SH ...

Page 2: ...WARNING When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a st...

Page 3: ...8 3 Some part of air conditioner does not operate 46 8 4 Air conditioner operates but abnormalities are observed 48 8 5 If a sensor is defective 50 9 REFRIGERANT R407C SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT 9 1 Characteristics of new refrigerant R407C 51 9 2 Checklist before serving 51 9 3 Tools specifically for R407C 52 9 4 For tubing installation procedures 52 9 5 In case of compressor malf...

Page 4: ...ANGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 19 C D B Heating Maximum 27 C D B 24 C D B 18 C W B Minimum 16 C D B 8 C D B 9 C W B ...

Page 5: ...ilter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407C 840 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 37 31 29 Outdoor Hi dB A 43 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide tube mm in 9 52 3 8 Refrigerant tube kit Accessorie...

Page 6: ... Indoor Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407C 850 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 38 33 31 Outdoor Hi dB A 46 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide tube m...

Page 7: ...ction Indoor Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407C 1 230 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 39 35 33 Outdoor Hi dB A 48 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide...

Page 8: ...f poles rpm 230 V High 4 1 130 Nominal output W 10 Coil resistance Ambient temp 20 C Ω BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close Run capacitor µF 0 6 VAC 440 Flap Motor Type Stepping motor Model MP24GA1 Rating DC 12 V Coil resistance Ambient temp 25 C W WHT BLU respectively 4 wires 380 7 Heat Exch Coil C...

Page 9: ...1 190 Nominal output W 10 Coil resistance Ambient temp 20 C Ω BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close Run capacitor µF 0 8 VAC 440 Flap Motor Type Stepping motor Model MP24GA1 Rating DC 12 V Coil resistance Ambient temp 25 C W WHT BLU respectively 4 wires 380 7 Heat Exch Coil Coil Aluminum plate fin Co...

Page 10: ...1 230 Nominal output W 10 Coil resistance Ambient temp 20 C Ω BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close Run capacitor µF 1 0 VAC 440 Flap Motor Type Stepping motor Model MP24GA1 Rating DC 12 V Coil resistance Ambient temp 25 C W WHT BLU respectively 4 wires 380 7 Heat Exch Coil Coil Aluminum plate fin Co...

Page 11: ...amp Ambient temp 25 C Trip in 6 to 16 sec at 14A Run capacitor µF 17 5 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 ø400 Fan motor model Q ty K35610 M01388 1 No of poles rpm 230 V High 6 680 Nominal output W 20 Coil resistance Ambient temp 20 C Ω BRN WHT 358 7 PNK WHT 510 7 Safety devices Type Internal protector Operating temp Open C 150 10 Close C Automatic reclosing Run capa...

Page 12: ...t temp 25 C Trip in 6 to 16 sec at 18A Run capacitor µF 22 5 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 ø400 Fan motor model Q ty K35610 M01388 1 No of poles rpm 230 V High 6 680 Nominal output W 20 Coil resistance Ambient temp 20 C Ω BRN WHT 358 7 PNK WHT 510 7 Safety devices Type Internal protector Operating temp Open C 150 10 Close C Automatic reclosing Run capacitor µF 1...

Page 13: ...mp 25 C Trip in 6 to 16 sec at 21A Run capacitor µF 25 0 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 ø400 Fan motor model Q ty K35610 M01402 1 No of poles rpm 230 V High 6 760 Nominal output W 20 Coil resistance Ambient temp 20 C Ω BRN WHT 256 7 YEL WHT 227 7 PNK YEL 103 7 Safety devices Type Internal protector Operating temp Open C 150 10 Close C Automatic reclosing Run capa...

Page 14: ...rost thermo 23D TRS02 12MSR Operating temp C ON 12 2 Diff 8 deg below Power Relay PR DFU24D1 F M Coil rating DC 24V Coil resistance Ω at 20 C 650 10 Contact rating AC 250V 20A Outdoor Unit AER507SH AER509SH AER512SH Thermistor Room sensor DTN TKS134B Resistance kΩ 25 C 5 0 3 Thermistor Coil sensor DTN TKS131B Resistance kΩ 0 C 15 0 2 Transformer TR ATR J105 Rating Primary AC 230V 50 60Hz Secondary...

Page 15: ...Unit AWR508HL AWR509HL AWR512HL 58 5 99 5 805 177 41 0 41 0 270 Narrow tube ø6 35 1 4 Wide tube ø9 52 3 8 AWR508 509 Wide tube ø12 7 1 2 AWR512 Center of tubing hole 2 places Drain hose ø18 Remote control unit 18 5 61 172 5 Unit mm ...

Page 16: ...96 608 247 225 4 ø12 holes Narrow tube service valve ø6 35 1 4 84 57 Wide tube service valve ø9 52 3 8 220 380 790 24 525 17 4 ø3 1 holes 336 380 Location of Service Valve Service valves are located behind the side panel See the illustration below NOTE Unit mm ...

Page 17: ...4 Outdoor Unit AER512SH 276 4 ø12 holes 312 Air intake Air discharge 608 60 530 380 88 17 750 380 273 4 ø3 3 holes 270 61 93 Wide tube service valve ø12 7 1 2 Narrow tube service valve ø6 35 1 4 Unit mm ...

Page 18: ...Capillary tube Cooling cycle Heating cycle Strainer Indoor unit Outdoor unit Check valve Strainer Indoor Unit AWR512HL Outdoor Unit AER512SH Compressor 4 way valve Accumulator Wide tube service valve Wide tube O D ø12 7 mm 1 2 Narrow tube service valve Narrow tube O D ø6 35 mm 1 4 Heat exchanger Heat exchanger Muffler Capillary tube Capillary tube Cooling cycle Heating cycle Strainer Indoor unit O...

Page 19: ... and wet floors due to dripping of condensation both tubes must be well insulated with a proper insulation material The thickness of the insulation should be a min 8 mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack IMPORTANT CAUTION Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm ...

Page 20: ...wide tube service valve MPa kgf cm 2 G 1 87 18 1 67 16 1 47 14 25 7 1 28 12 1 08 10 1 38 13 1 28 12 1 18 11 1 08 10 0 98 9 0 89 8 0 79 7 0 69 6 25 30 35 40 45 50 Outdoor inlet air D B temp C Low pressure at wide tube service valve MPa kgf cm 2 G 0 59 5 0 49 4 0 39 3 Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode R...

Page 21: ...p C 14 12 10 25 Indoor inlet air D B temp C Low pressure at wide tube service valve kg cm 2 G High pressure at wide tube service valve kg cm 2 G 32 27 21 32 27 21 27 20 15 Overload prevention operates to protect the air conditioner when outdoor ambient temperature reaches extremely high in heating mode Refer to 8 5 Overload prevention Points of Rating condition Black dots in above charts indicate ...

Page 22: ... 14 12 10 25 Indoor inlet air D B temp C Low pressure at wide tube service valve kg cm 2 G High pressure at wide tube service valve kg cm 2 G 32 27 21 32 27 21 27 20 15 27 20 15 Overload prevention operates to protect the air conditioner when outdoor ambient temperature reaches extremely high in heating mode Refer to 8 5 Overload prevention Points of Rating condition Black dots in above charts ind...

Page 23: ...stance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 0 30 Room air temp 27 C Fan speed High Cooling 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 45 60 Room air temp 20 C Fan speed High Heating ...

Page 24: ...air velocity m s Vertical distance m Axis air velocity Flap angle 45 60 Room air temp 20 C Fan speed High Heating 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 0 30 Room air temp 27 C Fan speed High Cooling ...

Page 25: ...air velocity m s Vertical distance m Axis air velocity Flap angle 45 60 Room air temp 20 C Fan speed High Heating 0 1 2 3 4 5 6 7 8 9 1 2 3 4 Horizontal distance m Axis air velocity m s Vertical distance m Axis air velocity Flap angle 0 30 Room air temp 27 C Fan speed High Cooling ...

Page 26: ... 2 27 2 17 2 07 1 94 1 79 TC 2 53 2 42 2 31 2 20 2 07 1 90 CM 0 59 0 64 0 69 0 74 0 82 0 90 21 SHC 1 12 1 08 1 03 0 98 0 93 0 87 19 23 SHC 1 34 1 29 1 25 1 20 1 15 1 08 25 SHC 1 55 1 51 1 46 1 42 1 36 1 30 27 SHC 1 77 1 72 1 68 1 63 1 58 1 51 29 SHC 1 99 1 94 1 90 1 85 1 80 1 73 31 SHC 2 20 2 16 2 11 2 07 2 01 1 90 TC 2 68 2 57 2 45 2 33 2 19 2 02 CM 0 61 0 66 0 71 0 76 0 84 0 92 23 SHC 1 10 1 06 ...

Page 27: ... 2 54 2 39 2 20 TC 3 11 2 97 2 84 2 70 2 54 2 34 CM 0 76 0 82 0 87 0 94 1 01 1 09 21 SHC 1 37 1 31 1 25 1 20 1 13 1 04 19 23 SHC 1 61 1 55 1 49 1 43 1 36 1 28 25 SHC 1 84 1 78 1 72 1 66 1 59 1 51 27 SHC 2 07 2 01 1 95 1 89 1 83 1 74 29 SHC 2 30 2 24 2 19 2 13 2 06 1 98 31 SHC 2 54 2 48 2 42 2 36 2 29 2 21 TC 3 29 3 15 3 01 2 86 2 69 2 48 CM 0 78 0 84 0 90 0 96 1 04 1 12 23 SHC 1 35 1 29 1 23 1 18 ...

Page 28: ... 2 95 2 85 2 72 TC 3 85 3 69 3 52 3 35 3 15 2 90 CM 1 01 1 10 1 17 1 26 1 38 1 49 21 SHC 1 72 1 64 1 56 1 48 1 39 1 28 19 23 SHC 1 96 1 88 1 80 1 72 1 63 1 52 25 SHC 2 20 2 12 2 04 1 96 1 87 1 76 27 SHC 2 44 2 36 2 28 2 20 2 11 2 00 29 SHC 2 68 2 60 2 52 2 44 2 35 2 24 31 SHC 2 92 2 84 2 76 2 68 2 59 2 48 TC 4 08 3 91 3 73 3 55 3 34 3 07 CM 1 04 1 13 1 21 1 30 1 41 1 53 23 SHC 1 69 1 61 1 53 1 46 ...

Page 29: ...r 7 C D B 6 C W B 2 Above characteristics indicate instantaneous operation which does not take into account defrost operation 3 Fan speed High 4 Because this air conditioner heats a room by drawing in the heat of the outside air heat pump system the heating efficiency will fall off when the outdoor temperature is very low If sufficient heat cannot be obtained with this air conditioner use another ...

Page 30: ...ure 27 C D B 19 C W B Outdoor Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230V 50Hz Rating Conditions Running Amps A 0 11 0 26 3 2 3 6 Power Input kW 0 025 0 058 0 707 0 79 Full Load Conditions Running Amps A 0 11 0 26 4 2 4 6 Powe...

Page 31: ...door Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 240V 50Hz Rating Conditions Running Amps A 0 11 0 12 0 25 0 27 3 8 3 8 4 2 4 2 Power Input kW 0 025 0 029 0 054 0 063 0 83 0 87 0 91 0 96 Full Load Conditions Running Amps A 0 11...

Page 32: ...door Air Temperature 35 C D B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B HEATING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 240V 50Hz Rating Conditions Running Amps A 0 13 0 14 0 30 0 32 5 9 5 9 6 3 6 4 Power Input kW 0 029 0 033 0 066 0 076 1 24 1 29 1 33 1 40 Full Load Conditions Running Amps A 0 13...

Page 33: ...30 6 2 Electric Wiring Diagrams To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Indoor Unit AWR508HL AWR509HL AWR512HL ...

Page 34: ...31 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit AER507SH AER509SH ...

Page 35: ...32 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit AER512SH ...

Page 36: ...erant pressure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is above T 1 C T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or below set temperature T C ...

Page 37: ...tective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is below T 1 C T C is set temperature Compressor ON Thermo OFF When the room temperature is equal to or above set temperature T C Compressor OFF 1 Refer to 8 6 Cold Draft Prevention NOTE 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 5 min...

Page 38: ... calculates the difference between the set temperature and the room temperature and automatically switches to COOLING or HEATING mode to maintain the desired temperature Room temp Set temp COOL Room temp Set temp HEAT This means that if the room temperature is higher than or equal to the set temperature COOLING operation begins If the room temperature is lower than the set temperature HEATING oper...

Page 39: ...or at least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed 1 Functionally compressor running period or time are of two types 10 minutes and 6 minutes depending upon production date NOTE ON ON ON ON OFF OFF Set speed More than 10 minutes 6 minutes T 1 C Indoor heat exch coil temp 1 C Compressor Indoor fan Room temp Thermo OFF Thermo ON S...

Page 40: ... the fan speed changes from L low speed to M medium speed When the temperature of the indoor heat exchange coil rises above A C the outdoor fan stops The operation temperature shown as A B C and D in the chart differ by models NOTE ON ON OFF ON H or M or L H H M M L M A B C D Indoor heat exch coil temp C Outdoor fan Indoor fan Compressor 37 AWR509HL AWR508 512HL A 54 C 50 C B 52 C 49 C C 45 C 42 C...

Page 41: ...on front of the indoor unit lights up when this function is working when 10 minutes has elapsed the fan speed is automatically switched to set speed regardless of indoor heat exchange coil temperature The operation temperature shown as Tc in the chart differ by models NOTE OFF ON OFF Set speed Indoor fan Standby lamp Indoor heat exch coil temp C Tc Max 10minutes 38 AWR509HL AWR508 512HL Tc 33 C 32...

Page 42: ...mpressor OFF C D Temperature of indoor heat exchanger coil is below Ta C Continuous operating time of compressor is more than 20 minutes Outdoor fan is either operated or stopped for more than 10 minutes A Is outdoor fan continuously operating for more than 10 minutes Integrated operating time of compressor is more than 50 minutes Temperature of indoor heat exchanger coil is below Ta 13 C See tabl...

Page 43: ...ds 11 minutes 32 seconds Start of defrosting Release of defrosting OFF OFF Release of cold draft prevention Compressor Outdoor fan Solenoid coil 4 way valve Indoor fan Standby lamp Indoor heat exch coil temp ON ON Set speed 1 2 seconds 2 seconds Tc C NOTE 1 Refer to 8 6 Cold Draft Prevention ...

Page 44: ...ified range 10 of the rating Check that power is being supplied 8 1 4 Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct Outdoor unit Indoor unit Power supply Single phase 220 240V 50Hz Ground Ground Inter unit power wiring Power plug Local supply Inter un...

Page 45: ...ce of electrical parts in indoor unit 1 Remove inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit 2 Remove inter unit wires from terminal plate in indoor unit Then pull the power plug out of the wall outlet Measure insulation resistance of indoor unit Insulation of outdoor unit is defective Insulation of indoor unit is defective Set circuit breaker t...

Page 46: ...ON selector switch to ON Indoor PCB Ass y is defective NO Check power supply Power is being supplied to the indoor unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suitable Measure resistance of outdoor fan motor winding Measure resista...

Page 47: ... secondary winding of transformer TR Indoor PCB Ass y is defective OK OK Measure resistance of indoor and outdoor fan motor winding FM Measure resistance of compressor motor winding CM OK Measure coil resistance of power relay in outdoor unit PR Replace the fuse If fuse has been blown OK Try to run with another remote control unit First remote control unit is defective Check for residue buildup on...

Page 48: ...voltage appears Outdoor PCB Ass y is defective OK OK NO Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Remote control unit is defective Try to run using another remote control unit COOL OK NO Is room temperature too high Try to raise setting temperature by temperature setting button button Outdoor unit still does no...

Page 49: ...out or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of outdoor fan motor winding Check fan motor capacitor Measure resistance of flap motor winding Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repai...

Page 50: ...rtage Recover refrigerant R407C Rotor may be locked up C1 Measure Power supply voltage The voltage is too low No Evacuate the air conditioner YES For compressor replacement refer to 10 5 In case of compressor malfunction CAUTION In case of leakage do not add refrigerant The unit must be vacuumed and recharged This is because composition of refrigerant in the unit has been changed due to leakage Se...

Page 51: ...fective Check voltage between terminals No 1 and No 3 at the terminal plate DC 24V No voltage appears Outdoor PCB Ass y is defective OK Remote control unit may be defective Measure resistance of 4 way valve s winding Receiver in lamp Ass y may be defective COOL HEAT Check voltage between terminals No 1 and No 3 at the terminal plate 0V HEAT COOL 48 ...

Page 52: ...age YES Check position of remote control unit Cool air from air conditioner reaches position directly Change position of remote control unit Wide and narrow tubes between indoor unit and outdoor unit are insulated Insulate both wide and narrow tubes separately and then tape together Measure temperature of suction and discharge air of air conditioner Recover refrigerant Check for clogging of air fi...

Page 53: ...tor is short the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature a In Cooling mode The air conditioner continues to operate Thermo ON Both the outdoor fan and compressor do not stop As a result the room becomes too cold b In Heating mode The air conditioner soon stops and will not start again Thermo OFF Neither outdoor fan nor c...

Page 54: ...position will differ depending on whether it is in gaseous or liquid phase and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state Thus always charge the refrigerant while it is in the liquid phase Ether type oil is used for the compressor oil for R407C type units which is different from the mineral oil used for R22 Thus more att...

Page 55: ...stallation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 52 Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Tools specifically for R407C Refrigerant recovery unit Vacuum pump with anti reverse flow 1 Solenoid valve installed type which prevents oil from flowing back into the unit when the p...

Page 56: ...t quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be damaged if...

Page 57: ...if the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the refrigerant cylinder is less than 20 Also charge the minimum necessary amount to the cylinder before using it for charging the air conditioning unit Example In case of charging refrigerant to a unit re...

Page 58: ...tubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of ai...

Page 59: ...ging the air conditioning unit Example In case of charging refrigerant to a unit requiring 0 76Kg using a capacity of 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10 x 0 20 2 76Kg For the remaining refrigerant refer to the instructions of the refrigerant manufacturer If using a charging cylinder transfer the specified amount of liquid refrigerant from the refrigerant cylinde...

Page 60: ...ons given in 10 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 9 8 Retro fitting existing systems 9 8 1 Use of existing units Never use new refrigerant R407C for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 9 8 2 Use of existing tubing If replacing an o...

Page 61: ...ster and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 10 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Fig...

Page 62: ...s and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor Fuse ...

Page 63: ...21040 Oggiona con S Stefano VA Via Per Solbiate 49 Italy Direzione e Uffici Via Varese 90 21013 GALLARATE VA Tel 0331 755 111 Telex 331060 ARGO I FAX 0331 776 240 ...

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