Product Manual

TUBEAXIAL-M

7. The standard pillow blocks on belt driven fans are factory lubricated. These bearings

should be lubricated on a semi- annual basis (more frequently in severe applications)

using a high quality lithium based grease. With the unit running add grease very slowly,

using a manual grease gun, until a slight bead of grease forms at the seal. Be careful not

to unseat the seal by over lubricating or by using excessive pressure. When the bearings

are obstructed from view use no more than three injections with a hand operated grease

gun

8. Dust and dirt on the exterior surface of the motor, fan tube and the entire fan wheel

should be removed at intervals determined by the severity of the application, to ensure

proper service life and safety.

Belt Tension

Pulley and Belt Replacement

In the course of regular maintenance the belts and pulleys may have to be changed and or

adjusted. The recommended procedure is as follows:

• Do not change the pulley pitch diameter in order to tension the belts. This will

result in a change in the fan speed.

• Loosen the nuts on the motor plate or motor in order to reduce the belt tension

such that the belts will easily slip over the pulleys. Never force the belts over the

rim of the pulley.

• Loosen the setscrews on the pulleys and remove from either the motor or fan shaft

using a two or three jaw puller.

• Remove any shaft imperfection such as setscrew mark using a file or emery cloth.

• Install the replacement pulleys tightening all setscrews to the recommended

torque rating (see chart) and ensuring that they are properly aligned.

• Pulley alignment is achieved by moving the pulleys on their respective shafts or

moving the entire motor until the pulleys are correctly aligned (see figure). Using

a square with one edge parallel to the motor shaft adjust the pulleys until the other

edge is parallel to the belts.

• Slip the belts over the pulleys then adjust the motor/ motor plate until the proper

tension is reached (1/64” deflection, half way between pulley centers, per inch of

belt span when pressed firmly).

• Tighten the motor plate/ motor adjusting nuts in place