Powerex SE Serie Mode D'emploi page 12

MAINTENANCE
ADJUSTING BELT TENSION
After the first 200 to 500 running hours or at any time
chirping is heard on start up, check the belt tension. If tension
is below 25 pounds on any belt, increase the center distance
using the motor slide base so that belt tension is 45 to 50
pounds. The motor slide base details are shown below. If
installing new belts see the procedure below:
Pg 12
Moving Parts! Lock out power
before servicing unit!
10HP - 20HP Scroll Enclosure Air Compressors
NEW BELT INSTALLATION PROCEDURE
1. Loosen the two slide bolts near the motor pulley and the
two slide bolts on the front edge of the base. Keep enough
torque on them to take up any slack between the slider and
the main base, but enough slack to allow the slider to move.
2. Tighten the belt adjustment bolt using a torque wrench to
45 inch pounds. This will bring the belts to the proper
tension.
3. Tighten the slider bolts, the two on the front edge of the
base, then the two slider bolts closest to the motor pulley so
the belt tension is 45 to 50 pounds.