Sanyo C4232 Power Supply Wires, Measurement of Insulation Resis- tance for Electrical parts

Page 62

12. SERVICE PROCEDURES

(4)Checking the Electrical Components

1)Measurement of Insulation Resistance

The electrical insulation is acceptable when the resistance exceeds 1 MΩ.

1Power Supply Wires

Clamp the earthed wire of the Power Supply wires with a lead clip of the insu- lation resistance tester and measure the resistance by placing a probe on either of the power wires. (Fig. 13)

Then measure the resistance between the earthed wire and the other power wires. (Fig. 13)

2Indoor Unit

Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on the terminal plate (Fig. 14)

3Outdoor Unit

Measure the resistance by placing a probe on the terminal plate in the same manner as explained above 2. (Fig. 14)

4Measurement of Insulation Resis- tance for Electrical parts

Disconnect the connector of the de- sired electric part from terminal plate, P.C.B. Ass’y, etc. (Fig. 15)

Similarly, disconnect the lead wires from compressor, capacitor, etc. (Fig. 16)

Measure the resistance in the same manner as illustrated on the right.

Refer to Electrical Wiring Diagram.

NOTE

If the probe does not enter the hole be- cause the

hole is too narrow, use a probe with a thinner pin.

Earthed wire

Clip

Probe

 

 

 

 

Insulation

 

Fig. 13

 

 

 

 

tester

 

 

 

 

 

 

 

 

 

 

0638_X_S

 

Terminal plate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Probe

Clip

 

 

Copper

Insulation

 

tube or

tester

 

metallic part

 

Fig. 14

 

0639_X_S

Probe

Clip

Copper tube or metallic part

Insulation

Fig. 15

tester

 

0640_X_S

From fan motor, compressor and other parts.

Metallic

Probe

part

 

Clip

 

Insulation

 

tester

Fig. 16

0641_X_S

 

SM830078

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Image 62
Contents TS4232 Indoor Unit Outdoor UnitXS4232 C4232 …In Moist or Uneven Locations Please Read Before Starting…In a Room Table of Contents Introduction Read Me First XS4232, TS4232 / CL4232 Operating RangeXS4232, TS4232 / C4232 Model No Indoor Unit XS4232 Outdoor Unit C4232 SpecificationsUnit Specifications Model No Indoor Unit XS4232 Outdoor Unit Cooling Low ambient control Major Component Specifications Indoor Unit Model No TS4232 Source Auto louver motorMajor Component Specifications Outdoor Unit Heat exchange Model No CL4232 SourceController P.C.B. Assy Float switch Other Component Specifications Indoor UnitModel No XS4232 Power Transformer Thermistor Coil sensorModel No TS4232 Power Transformer Model No C4232 Other Component Specifications Outdoor UnitPower Relay Thermostat Coil sensorModel No CL4232 Dimensional Data Indoor Unit XS4232Indoor Unit TS4232 19/32Outdoor Unit C4232, CL4232 Cooling Capacity Indoor Unit XS4232 Outdoor Unit C4232, CL4232208V / 1 phase / 60Hz Indoor Unit TS4232 Outdoor Unit C4232, CL4232 800 CFM 230V Performance ChartsOperating Current Indoor Unit XS4232 Outdoor Unit C4232 208VOperating Current Indoor Unit TS4232 Outdoor Unit C4232Operating Current Indoor Unit XS4232 Outdoor Unit CL4232 Operating Current Indoor Unit TS4232 Outdoor Unit CL4232 Low Pressure Suction Outdoor ambient temp. F C Indoor temp. F C 104 AIR Throw Distance Chart Model XS4232Refrigerant Flow Diagram Indoor Unit 4232 Type Outdoor Unit C4232, CL4232Installation Instructions Tubing LengthSelecting the Installation Site AvoidCase of multiple installations Wind Shield for CL Model Recommended outer dimensions of wind shield field supplyAir Discharge Chamber for Top Discharge GeneralOutdoor Unit C, CL models Single-phase 60 Hz, 208 / 230 Electrical Wiring General Precautions on WiringWiring System Diagram Electrical Data Indoor model TS4232 / Outdoor model C4232, CL4232Electric Wiring Diagram Electrical Wiring DiagramsSchematic Diagram 854-2-5268-593-00-0 TS3632 RY1~RY5 Diagram Compressor Motor Electric Wiring Diagram CL4232 Outdoor UnitFMO1 Room Temperature Control Processes and FunctionsFreeze Prevention Drain Pump ControlOutdoor Fan Speed Control C4232 Type CL4232 TypeService Procedures 1340XS Check remote control unit There is a possibility of short circuitTransformer in indoor unit Check Operation selector switch in the indoor unitCheck compressor motor protectors High pressure switch 63PH XS Type only Check. auxiliary relay Y or 2YCheck fuse on the P.C.B. Ass’y in the indoor unit Outdoor Unit does not Run Check Cool / FAN selector switch in the remote control unitCheck set temperature Check compressor motor magnetic contactor Check indoor unit P.C.B Check outdoor unit P.C.B CL3632 TypeSome Part does not Operate. A. Indoor fan does not run Indoor Unit does not RunIndoor fan and louver motor do not run Louver motor does not runOutdoor Fan does not Run Outdoor Fan does not Run for CL4232 Compressor does not RunPoor Cooling Excessive CoolingRoom temp. Sensor in the remote control unit is defective Operation of Major Electrical PartsPower Supply Wires Measurement of Insulation Resis- tance for Electrical partsChecking the Protective Devices Compressor motor thermal protector . . . . . . Outdoor unitIndoor fan motor FMI Indoor unit Measure the coil resistance Motor capacitor Both in indoor and outdoor unitMethod Used to Replace Fuse on PCB Ass’y Check for continuity using a multimeter as shown in FigContinuity of fuse on P.C.B. Ass’y Room temp. sensor KTEC-35Central Region

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