5. Operation
per and using the power switch, turn the unit on and off 1 or 2 times to
it is operating smoothly without any unusual sounds or vibrations.
) Turn the switch on and watch the unit closely unit it reaches full speed.
During this period, carefully check for any unusual sounds, vibrations, or current.
t for
operate
(4)
an temperature and vibration and noise levels.
5.2 Op
(1) Frequency turning the unit on and off may cause damage to the fan. Use the table
for the frequency with which you turn the unit on.
Less than 7.5kW
Less than 6 times an hour
.3 Precautions for stopping
(1) When terminating operation, turn power source off after slowly closing the damper.
5-1
5.1 Start-up precautions
(1) Close the dam
confirm that the un
At this time, also check the rotation direction of the fan. If the rotor is rotating in reverse,
switch 2 of the 3 power wires.
(2
(3) To check continuous operation, slowly open the damper and run the uni
20-30 minutes with the damper adjusted to low air volume (light load).
Check the condition of all parts. During this time period, do not allow the unit to
in the surging range.
Slowly open the damper to full load and let the unit run for 1-3 hours.
Check all the blower f
Confirm that the motor current is normal.
erating precautions
below as a guideline
Motor
output
Start-up
frequency
11kW
䌾
22kW
Less than 4 times an hour
More than 26kW
Less than 3 times an hour
5
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