Maintenance of the fan

1) Cautions in fan maintenance:

①The fan can only be put into operation in normal condition.
②When the fan is started-up after inspection, attention should be paid to see

weather each component is ok or not.

③Check periodically the dust and contamination inside the fan to prevent rust.

④Maintenance can be carried out during shut down of fan to assure operators

safety

2) Cautions in normal operation of the fan

①During the star-up, shut-down or operation of the fan, if some abnormal thing

happens, inspections shall be carried out immediately; if it is small failure, the reason shall be checked out and eliminated, if it is a big failure, the fan shall be stopped and inspection and maintenance shall be made immediately.

②Replace lubricant grease of motor bearing according to the real condition.

The main failure and reason of the fan

1) severe vibration of the fan

①friction between casing (or suction unit)and impeller.

②Foundation is not rigid enough or firm enough.
③loosing of rivets in impeller or deformation of impeller.
④Loose match of shaft with impeller disc
⑤Loose of connecting bolts between casing and support, and between motor and

support.

⑥The installation of inlet and outlet ducts is improper which causes the casing

deformation and resonance.

⑦Rotor unbalance caused by dust, contamination on blades, wear of blades,

deformation of impeller and bending of shaft.
2) High rise of bearing temperature
①severe vibration

②lubricant is poor in quality, deteriorated, mixed with dust, sand, contamination

and etc, or insufficient in quantity.

③Wornout of rolling bearing
3) Overcurrent and high temperature rise in motor.
①The valves on inlet and outlet pipes are not closed completely when starting-up.

②Input voltage is low or a single phase of power supply is cot out.
③Influence caused by severe vibration
④The speed of main shaft is bigger than the rated value.

Supply scope of fan unit

One fan, one driving motor and 4 sets of foundation bolts

Purchase information

1）when purchasing, indicate the size, speed, flow, pressure, discharge angle and rotating direction of the fan, and the model, power, and speed of the motor.

2）Also, indication shall be made clearly when ordering, if you need inlet filter, silencer, inlet and outlet soft connection, vibration absorbing platform and vibration absorber.

Huashide(shandong)fan Co.Ltd

Http:www.hsdfans.com

Add:kunmingrod.linyi.P.R.china

E-mail:17853928877@163.com

 Http:www.hsdfans.com

Tel: 17853928877