MVA 02 rev 5 - December 2017
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6
CHECKS TO BE MADE BEFORE AND AFTER STARTING
6.1
Preliminary checks and first starting of the machine
CAUTION:
Preliminary checks before the first starting must be made only with the fan at a standstill and
disconnected from electrical power supplies.
Before the fan is started for the first time a number of preliminary checks are necessary:
Verify the compatibility of the fan for its intended application.
In case of completion of the transmission by the installer, verify the compatibility of the fan identification
plate with the transmission specifications document.
Check that all guards are present.
Check that all nuts, bolts and other fasteners envisaged by
FVI
are present.
Check that all nuts, bolts and other fasteners (impeller, supports, foundation, transmission if present) are
correctly tightened.
Check the correct lubrication of the fan and motor bearings, and if necessary replace the grease (see
chapter 8 MAINTENANCE).
Check that all rotating parts can turn freely.
Check for the absence of objects or foreign bodies inside the fan.
Starting the machine requires no particular operations other than the supply of electrical power to the
motor. Always check that the supply voltage corresponds to the voltage envisaged for use of the machine
and is compatible with the voltage indicated on the motor identification plate. In case of use with an
inverter, the fan must be started by gradually varying the frequency of the inverter from zero up to the
value envisaged for normal operating speed. The same procedure must also be used every time the
machine is started subsequently.
Check that the rotation direction is correct. A short burst of electrical power is sufficient to check that the
rotation direction is the same as that indicated on the fan casing. If necessary invert the rotation direction
(see Electrical connections).
FVI
recommends the use of the checklist given in paragraph 12.2 to record the necessary checks for safety
conditions.
CAUTION:
Operating trials must not be permitted before the checks of the checklist have been made (see
paragraph 12.2 ).
CAUTION:
Axial fans must never operate with their openings completely closed.
