4-1
4. Preparation
for
operation
4.1
Points to be checked before test operation
4.1.1
Electrical system
(1) Check if the fan is correctly wired.
(2) Check if the terminals are securely connected.
(3) Check if the fan is securely grounded.
4.1.2
Check items related to the fan
(1) Check that no water has accumulated in the fan and that no foreign objects or materials such as
tools have been left inside.
(2) Check that all the connections at the hanging bolts, the main unit of the fan, accessories, duct,
and other parts are securely tightened.
Warning
Always turn off the main power of the fan, before turning the fan rotor by
hand to check the status.
(3) Before connecting the duct, turn the fan rotor by hand to check if it rotates smoothly without any
signs of internal failures.
(4) Post an operator in advance so that the fan can be turned off immediately at the supervisor’s
instruction.
Warning
Do not operate the fan if you notice any abnormal condition such as
noise. Be sure to contact the vendor or the service provider specified by
the manufacturer.
