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10. FAN MAINTENANCE
10.1 GENERAL CARE
Acompleterevisionofthefananditsinstallationafterthefirst24hoursofoperationisrecommended.
Disconnect it from the electrical network to avoid any possible accidents. F400 APPROVED SAFETY SWITCHES ARE
RECOMMENDED for this service. Make sure no parts have come loose, and completely retighten all parts: motor
supports and axles, etc. Also, check the condition of the motor or transmission bearings by turning the propeller or
the turbine with your hands. If you notice any abnormality or noise, consult the manufacturer.
InwIninstallations,wherethefanisgenerallyswitchedoff,inspectionsshouldbecarriedoutatleastevery6
months.
An inspection of the fan's components will ensure it remains in good condition, as long as there is no evidence
of bearings sticking, or noise. It is also recommended that a complete start-up is carried out, allowing the fan to
operate for one hour.
With wIn dual and only in emergency applications: It is recommended that the motor is replaced every 16,000
hours of operation.
F400 MOTORS USED FOR REPLACEMENT IN APPROVED FANS MUST BE AUTHORISED BY WOODS AIR MOVEMENT.
EVEN IF THE REPLACED MOTOR IS APPROVED, IT MAY HAVE NO VALIDITY WITH THIS PARTICULAR FAN.
FANS SUBMITTED TO AN EMERGENCY SERVICE IN CASE OF FIRE CANNOT BE REPAIRED. THEY MUST BE REPLACED
BY A COMPLETELY NEW UNIT WITH THE SAME CHARACTERISTICS AND APPROVED FOR F400.
IMPORTANT: Some models have a thermal protector incorporated which can temporarily stop the motor
operation. Therefore, never manipulate the apparatus before disconnecting it from the electrical network.
In three-phase models, this protection activates the manoeuvre circuit on an electrical installation contact.
10.2 CONSIDERATIONS DURING THE REVISION
Points to be taken into account during the revision in order to guarantee a correct operation of the fan:
1. The operation of the fan has to be gentle and free from vibrations.
2. Consumption in amperes "la(A)" measured through an ammeter or multi-meter should never exceed
consumption"In(A)"specifiedonthemotorplate.
3. Make sure all the elements joined with screws are tight.
4. In applications where fans convey gases with a high content of dust or grease, particles may become stuck to
the propellers, leading to a lack of equilibrium of the turbine or propeller and resulting in the deterioration of
the bearings. AVOID THE ACCUMULATION OF DUST ON THE MOTOR SURFACE TO AVOID INADEQUATE COOLING
AND OPERATION. Frequent cleaning of the rotating body should be done during pauses in installation, and every
time the fan develops light vibration and is not operating correctly. Never leave loose dust inside the fan.
5. In other applications with abrasive dust accumulations, the propeller may become worn. If there is lack of
equilibrium caused by wear, these should be replaced.
6. I nfanswhichhavebeenswitchedofforstoredfortwoormoreyears,acompleterevisionoftheballbearings
isrecommended.Beforestartingupthefan,ballbearingsshouldbereplacediftheyhavebeenaffectedby
oxidation, or by dried out grease.
10.3 CLEANING
Attention, maintenance and cleaning of all the installation components should be carried out on a regular basis
by the personnel responsible for the installation. Whenever possible, the accumulation of dirt, dust, grease, etc.
shouldbeavoided,asthisisthemaincauseoffire.
10.4 GREASING
Thegreasinginstructionsfordifferentelementsofthefanshouldbeclearlydistinguished:Thegreasing
instructionsfordifferentelementsofthefanshouldbeclearlyfollowed:
1. Generally, the electric motor bearings do not need maintenance; but the number of hours recommended in the
manufacturer's manual should not be exceeded; (15,000 to 20,000h according to the brand). In this case, the
motor should be replaced.
2. Transmission groups of the axial ranges and the bearings used in the centrifugal range BV do not need greasing,
but they should be replaced every 10,000 a 15,000h, depending on the temperature and humidity of the air to
be conveyed.
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