LG LP-8091PC, Service Manual

Page: 17 / 52

MODEL Circuit breaker capacity
80K
50A
(BTU/h)
–17–
5-6. Power Supply and Wiring
Voltage
Time
Starting point
Power source voltage
working voltage
Starting voltage
The unit is completely wired internally at the factory
according to general rule of electrical technology, but
local rules, if they are required, should be complied
with.
1) Power Supply
Power source must fulfill the following conditions:
①
The working voltage should be higher than
90% and lower than 110% of the rated voltage
marked on the name plate.
② The starting voltage should be higher than
85% of the rated voltage marked on the name
plate.
②
Provide a recognized circuit breaker as below
between power source and unit.
A disconnection device to adequately discon-
nect all supply lines must be fitted.
(for service operations)
③ The screws which fasten the wiring in the cas-
ing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected
during the course of transportation. Check
them and make sure that they are all tightly fas-
tened.
(If they are loose, it could give rise to burn-out
of the wires.)
④
See to it that the starting voltage is maintained
at more than 90 percent of the rated voltage
marked on the name plate.
⑤
The following troubles would be caused by volt-
age drop-down.
Vibration of a magnetic switch, damage on the
contact point there of, fuse breaking, distur-
bance to the normal function of a overload pro-
tection device.
2) Wiring
After the confirmation of the above conditions, pre-
pare the wiring as follows:
①
Use the power supply cord(Rubber insula-
tion, type Ho7RNF approved by HAR or SAA)
suitable for the product's electriccal capacity.
MODEL
80K
(BTU/h)
VOLTS
Conductor
cross-sectional area
220/ 380V 5.5mm
2