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Troubleshooting, Excessive noise or vibration – Greenheck MSX (470658) User Manual

Page 30

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30

Modular Supply Make-Up Air Unit

®

Troubleshooting

Excessive Noise or Vibration

Sheaves aligned?

Wheel unbalanced?

Belts worn or loose?

Yes

Yes

No

No

Yes

Bearings worn or need

lubrication?

Yes

No

Wheel rubbing on inlet?

Yes

No

No

Align sheaves.

(Reference V-Belt Drive Maintenance in the Maintenance section)

Clean and/or balance wheel(s).

Replace worn belts or tighten loose belts.

(Reference V-Belt Drive Maintenance in the Maintenance section)

Replace worn bearings or lubricate bearings as needed.

(Reference Bearing Maintenance in the Maintenance section)

Adjust wheel(s) or inlet.

At this time noise and vibration should

be at acceptable levels.