Frick AcuAir, Manual, Page: 45 / 58

210.100-IOM (JUL 2018)
Page 45
ACUAIR
®
HYGIENIC AIR UNITS
MAINTENANCE
Figure 52 – Sheave Alignment
Straightedge touching sheaves at points indicated by arrows.
Cord touching sheaves at points indicated by arrows.
ALIGNMENT USING STRAIGHTEDGE (A)
ALIGNMENT USING STRING (B)
Cord tied
to shaft
4. Inspect tension after:
• The first 24 hours of operation.
• One week of operation.
New belt tension will drop rapidly during the first few hours
of operation.
5. Overtensioning shortens belt and bearing life.
6. Keep belts free from foreign material, which may cause
slip.
7. Make V-drive inspection on a periodic basis. Tension belt
when slipping is observed. Never apply belt dressing, as this
will damage the belt and cause early failure.
Simple Tensioning Procedure
1. Measure the span length, K.
2. At the center of the span (K), apply a force (perpendicular
to the span) large enough to deflect the belt 1/64" for every
inch of span length. For example, the deflection of a 100-inch
span would be 100/64 or 1
9
/
16
inches. See Figure 53 .
BELT
DEFLECTION
1/64" PER
INCH OF
SPAN
K
SPAN
FORCE
Figure 53 - Simple Tensioning Procedure