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10-2. Checking Motor Capacitor

Remove the lead wires from the capacitor terminals, and

then place a probe on the capacitor terminals as shown

in Fig. 5. 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.

Multimeter

Ω

Compressor motor
capacitor

Fan motor
capacitor

Fig.5

Содержание 852 070 02

Страница 1: ...R Model No Product Code No SAP CMR2428E Outdoor Unit SAP CMR2428E REFERENCE NO SM700311 FILE NO MULTI SPLIT SYSTEM AIR CONDITIONER Model No Product Code No SAP CMR2428E 852 070 02 Outdoor Unit SAP CMR2428E Combination with indoor unit mod SAP K KR128E FTR128E 0 8180 134 0 02 2001 ...

Страница 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...

Страница 3: ...NG UNIT 7 1 Characteristics of new refrigerant R407c 11 7 2 Checklist before servicing 11 7 3 Tools specifically for R407c 12 7 4 For tubing installation procedures 12 7 5 In case of compressor malfunction 13 7 6 In case refrigerant is leaking 15 7 7 Charging additional refrigerant 17 7 8 Retro fitting existing systems 17 8 TROUBLESHOOTING 8 1 Check before and after troubleshooting 19 8 2 Air Cond...

Страница 4: ...1 OPERATING RANGE 1 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 ...

Страница 5: ...20 2 650 Power factor 94 93 C O P W W 2 5 2 7 Compressor locked rotor amperes A 33 66 Fan speeds Auto Hi Lo Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 2060 1030 x 2 Refrigerant control Capillary tube Operation sound dB A 53 0 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant tube Narrow tube mm in 6 35 1 4 diameter Wi...

Страница 6: ... Q ty 19TFB6064 1 No of poles rpm 230 V 6 850 370 Nominal output W 50 Coil resistance Ambient temp 20 C WHT BRN 99 5 WHT YEL 25 2 YEL PNK 63 2 Safety Type Internal protector devices Operating Open C 130 5 temp Close Automatic reclosing Run capacitor µF 5 0 VAC 400 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch mm 1 8 Face area m2 0 574 External Finish Acrylic baked on enamel finish Heat Exch...

Страница 7: ...nit SAP CMR2428E 620 130 100 55 20 20 325 835 850 80 138 58 87 310 285 178 58 58 1 2 3 4 Narrow tube service valve ø6 35 1 4 1 Wide tube service valve ø12 7 1 2 Power supply wires connection 3 Inter unit wires connection 2 4 Unit mm ...

Страница 8: ...it SAP CMR2428E 5 Outdoor Unit Wide tube O D ø12 7 mm 1 2 Narrow tube O D ø6 35 mm 1 4 Condenser Wide tube service valve Compressor A Accumulator Compressor B B A A Narrow tube service valve Capillary tube Drier B Accumulator Evaporator Indoor Unit A Evaporator Indoor Unit B ...

Страница 9: ... V Single phase 50Hz Number of Indoor Unit 1 Unit 2 Units Rating Conditions Running Amps A 6 20 12 50 Power Input kW 1 32 2 65 Full Load Conditions Running Amps A 7 2 14 5 Power Input kW 1 55 3 15 Rating Conditions Indoor Air Temperature 27 C D B 19 C W B Outdoor Air Temperature 35 C D B 24 C W B Full Load Conditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B ...

Страница 10: ...ELAY B WHT BLK RED WHT BLK RED YEL WHT YEL BLU BRN PNK GRY CAPACITOR C1 CAPACITOR C3 CAPACITOR C2 THERMOSTAT 23S RED RED BRN BRN BLK RED RED BRN TERMINAL PLATE 3P GRN YEL RED RED BRN BRN BLU RED BRN BRN WHT WHT BLK BLK RB RA 0 1 6 8 2 4 6 8 2 4 0 1 OVERLOAD RELAY 3 OVERLOAD RELAY 4 OVERLOAD RELAY 1 OVERLOAD RELAY 2 G G G G COMPRESSOR MOTOR B COMPRESSOR MOTOR A FAN MOTOR CMB CMA FM H L C S R C C S ...

Страница 11: ...aracteristics Indoor inlet air D B temp C 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor inlet air D B temp C Operating current A 12 Low pressure at wide tube service valve kg cm 2 G 32 27 21 32 27 21 Points of Rating condition Black dots in above charts indicate the following rating conditions Cooling Indoor air temperature 27 C D B 19 C W B Outdoor air temperature 35 C D B 24 C W B NOTE ...

Страница 12: ...h room around the unit for air intake exhaust and possible maintenance Fig 3 provide a solid base concrete block 10 x 40 cm beams or equal a minimum of 10 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life Fig 4 use lug anchor bolts or equal to bolt down the unit reducing vibration and noise Fig 4 IMPORTANT 6 INSTALLATION INSTRUCT...

Страница 13: ...should be allowed to touch refrigerant tubing the compressor or any moving parts of fan motors Regulations on wire diameters differ according to national and local requirements For field wiring regulations please refer to the LOCAL ELECTRICAL CODES before starting and carefully follow the regulations as you do the installation Do not supply power to the system until all wiring and refrigerant tubi...

Страница 14: ...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...

Страница 15: ...stallation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 12 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...

Страница 16: ...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...

Страница 17: ...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...

Страница 18: ...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...

Страница 19: ...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...

Страница 20: ...ons given in 10 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 7 8 Retro fitting existing systems 7 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 7 8 2 Use of existing tubing If replacing an o...

Страница 21: ...eck that voltage is in specified range 10 of the rating Check that power is being supplied 8 1 4 Check lead wires and connectors Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 4 3 2 1 Ground Ground Power supply 220 240V 50Hz 4 3 2 1 1 2 Ground Power supply Outdoor Unit Indoor Unit A Inter unit wiring 4 L Indoor...

Страница 22: ...O Set circuit breaker to OFF Measure insulation resistance of electrical parts in indoor unit 1 Remove both power supply wires and 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 Measure insulation resistance of indoor unit Insulation of outdoor unit is defective Insulation of indoor uni...

Страница 23: ...in outdoor unit Measure coil resistance of power relay RA RB NO Check power supply Power is being supplied to the outdoor unit Power failure Reset breaker Wait for recovery or contact power company Circuit breaker is tripped Check capacity of circuit breaker Capacity of circuit breaker is suitable Replace with suitable one larger capacity Measure resistance of compressor motor winding Measure resi...

Страница 24: ...motor capacitor YES YES YES Overload relay is working Refrigerant gas shortage Charge refrigerant gas R407c Temperature of compressor is abnormally high Rotor may be locked up OLR 1 to 4 C2 C3 Fan cannot be turned Check fan casing for foreign matter on inside Check fan rotation Turn fan gently once or twice by hand Measure resistance of outdoor fan motor winding OK Fan motor burnout or foreign mat...

Страница 25: ...l Insulate both wide and narrow tubes separately and then tape together Reduce cooling load or replace the air conditioner with larger capacity Temperature difference is small YES Charge refrigerant gas R407c Temperature difference between suction and discharge air is large enough approx 10 deg or more Check for clogging of air filter Measure temperature of suction and discharge air of air conditi...

Страница 26: ... To indoor unit B Relay RB Relay RA Compressor moter capacitor C3 Compressor moter capacitor C2 Overload relay 1 Overload relay 3 Fan moter capacitor C1 Terminal plate 3P From power supply Outdoor Unit SAP CMR2428E Electric Parts Parts Layout in Unit Compressor A CMA Compressor B CMB Fan motor Heat exchenger coil ...

Страница 27: ... screw where power supply lines are connected on the terminal plate Fig 2 10 1 3 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 Figs 3 and 4 Refer to Electric Wiring Diagram If the probe cannot enter the poles because the hole...

Страница 28: ...n 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 25 Multimeter Ω Compressor motor capacitor Fan motor capacitor Fig 5 ...

Страница 29: ...SANYO Electric Co Ltd Osaka Japan ...

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