Milnor 5050, Руководство по обслуживанию

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Main Air Blower Wheel Replacement
PELLERIN MILNOR CORPORATION
2. Put the 2x4 blocking within reach. Carefully manauver the new blower wheel into position
and onto the shaft. While supporting the weight of the blower wheel, wedge the 2x4 blocking
under the blower wheel to hold it in place temporarily.
3. Replace the bearing lock washer and lock nut on the shaft. When the lock nut is reliably on
the shaft, remove the 2x4 blocking.
4. Tighten the lock nut to tighten the blower wheel on the shaft taper. Use a hammer and cold
chisel to tighten the lock nut. When the face of the lock nut is flush with the end of the shaft,
the blower wheel is sufficiently tight.
5. Bend a tab on the lock washer into a groove on the lock nut to lock it in place.
6. Place the cone and spacer in position on the air opening below the blower wheel. The top of
the cone fits into the bottom opening in the blower wheel with very little play. Move the
cone around until it seats into the blower wheel. While holding the fully seated cone in place,
loosely install the attachment bolts, flat washers, and lock washers.
7. The bolt holes in the cone permit some sideways movement of the cone. Move the cone
around to feel the fit inside the blower wheel. By feel, try to center the cone in the blower
wheel. Tighten the bolts to 31 foot-pounds (42 Nm) in an alternating pattern.
8. Apply machine power. With the dryer side panels still removed, stand clear of the machine
and use the manual controls to run the main blower. Check for abnormal vibration or noise.
Tip:
If the blower wheel rubs against the cone, you will probably hear a metalic rubbing sound.
This is normally not serious and the noise should dissipate after the machine is in operation
for a while and the cone wears down. If the noise is objectionable, remove electrical power
from the machine (see Notice P1) and adjust the cone position as explained above.
9. If any unusual noise or vibration persists, consult Milnor Technical Support.
10. Replace the side panels and return the dryer to operation.
— End of BIPD6M06 —
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