Sanyo KH2442 User Manual download pdf (Page 186)

4. Service procedures

Section

SM830082

IV - 30

Fig. IV-14

Copper

tube or

metallic part

Clip

Insulation

tester

Probe

Terminal plate

0639_X_S

Fig. IV-15

Copper

tube or

metallic part

Clip

Insulation

tester

Probe

0640_X_S

Fig. IV-16

From fan motor,

compressor and other

parts.

Clip

Probe

Insulation

tester

Metallic

part

0641_X_S

Fig. IV-17

NOTE

Earthed wire

Clip

Probe

Insulation

tester

0638_X_S

(1) Measurement of Insulation

Resistance

• The electrical insulation is acceptable when the

resistance exceeds 1 MΩ.

1 Power Supply Wires

Clamp the earthed wire of the Power Supply wires

with a lead clip of the insulation resistance tester and

measure the resistance by placing a probe on either

of the power wires. (Fig. IV-14)

Then measure the resistance between the earthed

wire and the other power wires. (Fig. IV-14)

2 Indoor 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. IV-15)

3 Outdoor Unit

Measure the resistance by placing a probe on the

terminal plate in the same manner as explained

above 2. (Fig. IV-15)

4 Measurement of Insulation Resistance for

Electrical parts

•

Disconnect the connector of the desired electric part

from terminal plate, P.C.B. Ass’y, etc. (Fig. IV-16)

• Similarly, disconnect the lead wires from

compressor, capacitor, etc. (Fig. IV-17)

• Measure the resistance in the same manner as

illustrated on the right.

Refer to Electrical Wiring Diagram.

If the probe does not enter the hole because the

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

4-2 Checking the Electrical Components

1 2 ... 181 182 183 184 185 186 187 188 189 190 191 ... 201 202

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Sanyo KH2442 User Manual Page 186

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