Zibro SC 1832 Installations-Handbuch Seite 70

instal_SC1832.qxd 06-05-2010
it fixed with a clicking sound. Secure the cable onto the control board with the cord clamp.
4. Connect the grounding wire to the terminal on the control board individually.
5. The electrical connection is finished now.
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
• Never fail to have an individual power circuit specifically for the air conditioner. As for the
method of wiring, be guided by the circuit diagram posted on the inside of control cover.
• The screw which fasten the wiring in the casing 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 fastened. (If they are loose, it could cause burn-out of
the wires.)
• Check specification of power source.
• Confirm that supplied electrical capacity is sufficient.
• See to that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
• Confirm that the cable thickness is as specified in the power source specification.
• Always install an earth leakage circuit breaker.
• The following would be caused by voltage drop: Vibration of a magnetic switch, which will
damage the contact point, fuse breaking, disturbance of the normal function of the overload.
• The means for disconnection from a power supply shall be incorporated in the fixed wiring and
have an air gap contact separation of at least 3mm in each active(phase) conductors.
ELECTRICAL SAFETY CHECK
It is advised to do the following safety checks.
• Electrical safety check
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M .
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and groun-
ding resistance tester. Make sure the grounding resistance is less than 4 .
3. Electrical leakage check (performing during test running)
During test operation after finishing installation, use an electroprobe and multimeter to perform the
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Outdoor unit
Control cover
Screw
To indoor unit
Outdoor unit
Plug connector
or
Secure the cable with cord clamp