4.
Preparation for operation
4.1
Points to be checked before test running
4.1.1
Checking the electrical system
(1) Check that the fan is correctly wired.
(2) Check that the terminals are securely connected.
(3) Check that the equipment is securely grounded.
(4) For models with an output of over 200W, check that the settings of the overload protection
device match the rated current value of the motor in use. The rated current value is indicated
on the nameplate of the fan.
(5) Turn ON and OFF the power switch once or twice to check the rotation direction of the fan.
If the fan rotates in the reverse direction on three-phase power, swap two of the three wires
of the power cable.
Warning
Be sure to turn off the main power before changing the wiring of the
fan.
4.1.2
Checking the fan system
(1) Check that no water collects in the fan and that no foreign objects or materials such as tools
have been left inside.
(2) Check that all the connections on the hang bolts, fan main unit, accessories and pipe joints
are securely tightened.
Warning
Always turn OFF the main power before rotating the fan by hand.
(3) Before connecting the duct, rotate the fan by hand to check that it can rotate smoothly
without any internal faults or obstructions.
(4) Place an operator in advance so that the fan can be immediately turned OFF according to
the instructions of the person in charge of the operation.
Warning
Do not operate the fan if it is not running properly, for example if it is
making a strange noise. Contact a specialist company or the service
company designated by the manufacturer.
4-1
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