Measuring belt tension with frequency meter
1. Remove protective cover.
2. Tap against the belt with the handle of a hammer or with a wrench to initiate belt vibration.
3. Hold measuring tip of the frequency meter over belt drive.
4. The measured frequency value appears on the display of the frequency meter.
5. Compare measured value with value in the table.
6. If the measured values deviate from the specified values, adjust drive belt tension (→ Page 118).
7. Install protective cover.
Belt length ‒ Application Measured value
Initial installation (new belt)
Measured value
Operating tension (used belt)
Drive belt 1800 mm – Fan Frequency: 88 ±1 Hz Frequency: 77 ±1 Hz
Drive belt 1520 mm – Fan Frequency: 104 ±1 Hz Frequency: 92 ±1 Hz
Table 114: Set-point values ‒ Measurement with frequency meter
MS150118/00E 2014-07 | Task Description | 117
TIM-ID: 0000053489 - 001
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