Sanyo STB1220C1 User Manual download pdf (Page 39)

8-1. Measurement of Insulation

Resistance

●

The insulation is in good condition if the resistance

exceeds 2MΩ.

8-1-1. Power Cord and Unit

Clamp the grounding prong of the power plug with a lead

clip of the insulation resistance tester and measure the

resistance by placing a probe on either of the two power

blade. (Fig. 1)

Then, also measure the resistance between the

grounding prong and other power blade. (Fig. 1)

8-1-2. Measurement of Insulation

Resistance for Electrical Parts

Disconnect the lead wires of the desired electric part

from terminal plate, switch, capacitor, etc. Similarly

disconnect the connector. Then measure the insulation

resistance.

(Figs. 2 to 3)

Refer to Electric Wiring Diagram.

If the probe cannot enter the poles because the hole is

too narrow then use a probe with a thinner pin.

NOTE

Power plug

Ground

Probe

Insulation tester

Fig. 1

Copper

tube or

metallic part

Clip

Insulation

tester

Probe

Fig. 2

Clip

Insulation

tester

Probe

Metallic

part

From fan motor,

compressor and

other parts

Fig. 3

Fig. 4

8. CHECKING ELECTRICAL COMPONENTS

The shape of the power plug may differ from that

of the air conditioner which you are servicing.

NOTE

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 51 52

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Sanyo STB1220C1 User Manual Page 39

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