Air Handlers Envirofresh Series Manuel d'installation, d'utilisation et d'entretien - Page 7

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BELT TENSIONING INSTRUCTIONS

Tensioning Forces

Belt Section

SPZ

SPA

SPB

SPC

Belt Tensioning Procedure Using A Belt Tension Indicator

Calculate the deflection distance in mm on a basis of 16mm per metre of



centre distance.

Set the lower marker ring at the deflection distance required in mm on the



lower scale.

Set the upper marker ring against the bottom edge of the tube.



Place the belt tension indicator on top of the belt at the centre of the span, and



apply a force at the right angles to the belt deflecting it to the point where the

lower marker ring is level with the top of the adjacent belt.

Read off the force value indicated by the top edge of the marker ring.



Compare this force to the kgf value in the table above.



If a Belt Tension Indicator is not available, a spring balance and rule will



suffice.

Important

AFTER THE DRIVE HAS BEEN RUNNING FOR APPROXIMATELY 30 MINUTES,

THE TENSION SHOULD BE CHECKED AND RE-ADJUSTED TO THE HIGHER

VALUE, IF NECESSARY.

Force required to deflect belt 16mm per metre of span

Small Pulley Diameter

56-95

100-140 mm

80-132 mm

140-200 mm

112-224 mm

236-315 mm

224-355 mm

375-560 mm

Kilogram Force

1.3-2.0

2.0-2.5

2.5-3.6

3.6-4.6

4.6-6.6

6.6-8.7

8.7-11.7 kg

11.7-15.3 kg

Deflection 16mm

per metre of span.