Sanyo SAP-CRV123EH User Manual download pdf (Page 43)

11-1. Measurement of Insulation

Resistance

●

The insulation is in good condition if the resistance

exceeds 1MΩ.

11-1-1. Power supply cord

Clamp the grounding wire of power cord with the lead

clip of the insulation resistance tester and measure

the resistance by placing a probe on either of the two

power wires. (Fig. 1)

Then also measure the resistance between the

grounding and other power terminals. (Fig. 1)

11-1-2. Indoor unit

Clamp an aluminum plate fin or copper tube with the

lead clip of the insulation resistance tester and mea-

sure the resistance by placing a probe on each termi-

nal screw where power supply lines are connected on

the terminal plate. (Fig. 2)

11-1-3. Outdoor unit

Clamp an aluminum plate fin or copper tube with the

lead clip of the insulation resistance tester and mea-

sure the resistance by placing a probe on each termi-

nal screw on the terminal plate. (Fig. 2)

Note that the ground line terminal should be skipped

for the check.

11-1-4. Measurement of insulation

resistance for electrical parts

Disconnect the lead wires of the desired electric part

from terminal plate, capacitor, etc. Similarly discon-

nect 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

is too narrow then use a probe with a thinner pin.

NOTE

Insulation

tester

Probe

Clip

Ground wire

Fig. 1

Terminal plate

Copper

tube or

metallic part

Clip

Insulation

tester

Probe

Fig. 2

Copper

tube or

metallic part

Clip

Insulation

tester

Probe

Fig. 3

Clip

Insulation

tester

Probe

Metallic

part

From fan motor,

compressor and

other parts

Fig. 4

11. CHECKING ELECTRICAL COMPONENTS

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Sanyo SAP-CRV123EH User Manual Page 43

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