Checking Electrical Components; Measure Of Insulation Resistance; Check Continuity For Electrical Parts - Technibel GR120R Technical Data & Service Manual

9.CHECKING ELECTRICAL COMPONENTS

9-1 Measurement of Insulatipon Resisatnce
The insulation is good condition if the resistance
exceeds 2MΩ
9-1-1Power Supply Wires
Clamp the grounding terminal 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 terminals.(Fig 1)
Then, also measure resistance between the grounding
and other power terminals (Fig 1)
9-1-2 Indoor Unit
Clamp an aluminium plate fin or copper with the lead clip
of the insulation resistance tester and measure the
resistance by placing a probe on each terminal screw
where power supply lines are connected on the terminal
plate.(Fig 2)
9-1-3 Outdoor Unit
Clamp an aluminium plate fin or copper with the lead clip
of the insulation resistance tester and measure the
resistance by placing a probe on each terminal screw
on the terminal plate.(Fig 2).
Note that ground line terminal should be skipped
9-2 Measurement of Insulation resistance
for electrical Parts
Disconnect the lead wires of the desired electric part
from terminal plate, capacitor, etc. Similarly disconnect
the connector. Then measure the insulation resistance.
(Fig 3 and 4)
NOTE
Refer to Electric Wiring Diagram
If the probe cannot enter the poles because the hole is
too narrow the use a probe with a thinner pin
NOTE
The shape of the power plug may differ from that of the
air conditioner which you are servicing.
36
Fig. 2
Fig. 3
Fig. 4