Routine Maintenance - Breeze MFD Series User Manual

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Checks prior to initial start-up
Proceed with the fan's initial start-up in the following sequence:
• Check that the mechanical assembly has been carried out properly
• Remove foreign bodies located in the suction and outflow areas and in the fan space
• Check that the electrical installation has been completed in accordance with regulations
• Does the mains voltage match the motor voltage specified on the rating plate?
• Is the motor protection system set correctly with regard to the motor's nominal current? The setting must be carried out in
accordance with the corresponding details contained on the motor output plate.
• Has the motor been connected correctly in accordance with the wiring diagram? The connection schematic supplied by the
motor suppliers applies for the connection of the motor.
Starting up the fan for the first time.
Only put the fan into operation after it has been assembled in accordance with the regulations:
• Put the fan into operation.
• Monitor its correct function (quiet running, vibration, imbalance, power consumption, controllability)
Once the unit has been put into operation, a routine maintenance schedule should be set up to accomplish the following:
• Lubrication of bearings and motor.
• Impeller, casing, bolts and set screws on the entire fan should be checked for tightness.
• Any dirt accumulation on the impeller or in the casing should be removed to prevent unbalance and possible damage.
• Inspect fan impeller and casing looking for fatigue, corrosion or wear.
Checks after initial start-up
Check the mechanical connections after initial start-up, especially the joints at the fan.

9. ROUTINE MAINTENANCE

• Regular maintenance is needed each year. The
• Before any maintenance work is undertaken:
Stop fan in accordance to regulations and disconnect all poles from mains supply.
o
Wait until impeller is stationary.
o
Make sure that a restart is not possible
o
• Use only original spare parts tested and approved by the manufacturer.
• The following safety notes must be observed when maintaining the machine.
• Replace the ball bearings of the motor whenever the grease utilization period has elapsed in accordance with the maintenance
instructions of the manufacturer.
• The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt.
• Use a soft dry brush or a vacuum cleaner to remove dust.
• Only use usual commercial cleaning material paying attention to the prescribed safety measures and do not use any abrasive
tools (surface protection will be destroyed).
Prior to all servicing work:
• Bring the fan to a halt in the prescribed manner and completely isolate the fan from the mains supply.
• Wait until the rotor has come to a halt.
• Ensure that the machine cannot be switched on again
• Clean the fan
• Clean the suction apertures
• Clean the rotor (if necessary dismantle the protective anti-intrusion fitting)
• Do not overload the motor
• Do not bend the rotor or vanes
• Assemble the protective anti-intrusion fitting.
• Control whether installation is correct:
Impeller must rotate free
o
Annular gap between impeller and casing must be regular.
o
Checking direction of rotation is correct.
o
General Check:
• Too much bearing play?
• Lubricant leaking from the bearings?
• Surface protective coating damaged?
• Attention: Conveyed medium too aggressive?
• Unusual noises during operation?
• Fan output still sufficient for possibly extended or shortened ducting system?
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impeller blades require thorough cleaning once in 6 months.
USER'S MANUAL
MFD SERIES
05