Milnor 48040F7J Manual Del Usuario página 34

Chapter 3. Routine Maintenance
Maintenance Components—Machines and Controls Group
3.1.5.
[Document BIUUUM10]
Figure 6: Belt and Pulley Conditions To Look For. See
Types of Belt Damage
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Supplement 1
With power removed:
• Look for dirt, dust, oil, and grease. Remove contamination.
• Look for belt damage as shown in
• Look for worn pulleys as shown in
With the machine in operation—Do not touch the machine. Look and listen:
• A belt can have some vibration and not cause damage. It is necessary to correct this
condition only if the vibration is large.
• A belt must have sufficient tension that there is no slippage on the pulley during operation.
If slippage occurs, you can usually tell from the noise.
About Component Replacement and Tension Adjustment—Correct adjustment is very
important to the service life of components and operation of the machine. Your Milnor dealer
can do this work. If you know how to do this work (for example, correctly align belts and
pulleys), and you want to do it, speak to your dealer or Milnor for part numbers. Replace worn
components before you make tension adjustments.
• Machines that use rods with full threads and nuts to hold the position of the motor
base—Turn the nuts on the rods as necesary to adjust tension. Tighten the nuts.
PELLERIN MILNOR CORPORATION
Supplement
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How to Examine Belts and Pulleys
Figure 6.
Figure 6.
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1.
How to Find a Worn Pulley
Legend
Broken cord—damage from a sharp object.
Cracks—belt is too large for the pulley.
Shiny side walls—oil or grease on belt.
The belt layers disconnect—Oil or grease.
Bands on side walls—dirt, particles.
Incorrect: The pulley is too worn.
Correct: The belt only touches the side
walls. You can put a thin strip of paper into
the space between the belt and the pulley.
Space