F - Maintenance; Verification - Lincoln Electric D350 Series Safety Instruction For Use And Maintenance

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F - MAINTENANCE

VERIFICATION

All maintenance operations must be carried out with the power to the system switched off.
The fitter or user may not modify the construction of the fan in any way. If necessary, contact the manufacturer and
send back the equipment.
Check that large quantities of dust are not deposited on the motor ventilation blades and that the air inlet openings are not
blocked, as that could lead to motor overheating. Clean if necessary.
The fan rotor must be clean and regularly cleaned in order to avoid a drop in efficiency or wheel unbalance, which would
damage the motor bearings.-
Check the fastening of the bolts that hold the motor on its seat, the screws that fasten the impeller on the motor shaft (shaft
end), and the nuts or screws holding the scroll on the seat
Inspect the motor connections and the tightening of lugs (with the power off).
Check the fastening of the stuffing boxes.
Check the motor condition according to the instructions of the motor manufacturer.
For transmission fans, follow the bearing lubrication frequencies, check the alignment of bearings and belt tension. Bearings
have an average life of 20 000 h.
- Regularly check the vibrations from the fan and motor. If they are not normal, please contact the manufacturer. See
table 2 to identify the vibration limits (alarm and stopping values).
This regular inspection is required for the integrity of the fan.
FIXED FANS
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