Sanyo SAP-CRV123EH User Manual
43
11-1. Measurement of Insulation
Resistance
●
The insulation is in good condition if the resistance
exceeds 1M
exceeds 1M
Ω
.
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)
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)
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.
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)
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.
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