Showa Denki KAIRYU, Instruction Manual

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(3) Avoid sudden expansions or shrinkage in diameter.
 
(4) When the inlet will be left open, install the inlet cone to maintain performance.
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(5) When the outlet will be left open, install the diffuser to maintain performance.
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(6) Leave at least the diameter of the fan casing between the wall and the fan inlet or outlet.
4.3 Electrical wiring

Wiring of the motor should be performed according to Electrical Installation Technology Standards
and Internal Wiring Standards by a licensed electrician.

For the power source for this fan, check the product nameplate and use the specified power
source. If operation is performed using a different power source, there is a danger of malfunction.
The product nameplate is attached to the fan casing.

Select an earth leakage circuit breaker and/or circuit breaker that is suitable for the starting
current.

Be sure to connect the earth wire to prevent electrical shock.

Also refer to the motor instruction manual.

Be sure to wire the fan properly so that the rotation direction is correct. (For details, refer to section
4.4).
4.4 Test operation
Before performing test operation, be sure to inspect the following points and verify that there are no
abnormalities before starting operation.

Make sure that there are no materials, bolts, nuts, tools, etc. left behind after installation inside the
connected ducts or casing or near the inlet or outlet.

Check that there is no looseness in the mounting and that all bolts and nuts have been securely
tightened.

If the inlet or outlet is open, be sure that metal screens are installed.

Check wiring.

After verifying that there are no abnormalities in the above items, switch on the power and
immediately switch it off again (momentary operation). In addition to checking whether there are
any abnormal vibrations or contact noise, also check the rotation direction. (There is a sticker on
the fan casing indicating the rotation direction.) If the rotation direction is opposite, the air from this
fan will also flow in the opposite direction.
d or more
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