Product Manual

CA / CT SERIES CAP600
Page 23 of 30 REV B June 2012
BELT TENSION
CAUTION: Over tightening the v-belt(s) will result in overloading of the motor, and/or belt and
pulley failure. A loose belt will result in an unstable speed, premature belt wear, “throwing”
belts and a high amp draw. To change tension, turn the adjusting bolt at the end of the base,
shown in figure 13. Retighten motor hold-down bolts. Grease both the motor and compressor
pulleys once a year with lithium ball bearing grease.
Proper belt tensioning requires the use of a belt tension gauge to measure belt tension. This
tool is available at your local auto parts or hardware store.
1
2
Fig 14 Motor mounts and take up bolt.
B
ELT TENSIONING INSTRUCTIONS
1. Loosen the motor mounting bolts, but do NOT remove the nuts. See fig (12) for the
mounting bolt locations. Do NOT attempt to adjust the take-up bolt before loosening all
of the motor mounting bolts, attempting to do so will damage the unit.
2. Consult Table (7) for the appropriate deflection and tension values for Challenge Air units.
Table (8) contains deflection and tension values for CT units.
Model HP
Gage
Deflection
Ave
rage
Tension Minimum Maximum
CA E57 5 1/4" 10lb 9lb 12lb
CA E50 5 1/4" 10lb 9lb 12lb
CA E57 7.5 1/4" 8lb 7lb 10lb
CA E71 10 3/8" 12lb 11lb 14lb
CA E15 15 3/8" 11lb 10lb 13lb
CA Gas E57 13-14 3/8" 20lb 18lb 23lb
Table (7) Challenge Air Belt Tensioning Guide
1
Motor Mounts
2 Take Up Bolt