Specifications

VCES-ERV-IOM-1A – ERV500i/e
14
Install the new brush seals so that the bristles come in
contact with the cassette. Reverse the procedures above to
re-install the brush seals and the air filter guide.
Drive Belt
To replace the cassette drive belt, the brush seal located on
the drive belt side of the cassette must be removed. Com-
plete the steps in the previous section for the removal of the
brush seal prior to completing the following procedures.
The cassette beam assembly must be removed to gain
access to the cassette drive belt. To remove the cassette
beam assembly, remove the three Phillips screws used to
fasten the cassette beam cover.
Using a 1/8” Allen key, loosen the two set screws used to
tighten the cassette bearing to the cassette shaft. The set
screws are located in-line with the cassette shaft, between
the cassette and the cassette beam. After loosening one
set screw, it will be necessary to rotate the wheel a half
turn to access the second set screw.
Using a 7/16” nut driver, remove the four ¼” bolts holding
the cassette beam to the cassette frame. The cassette beam
can now be removed and placed aside to re-install later.
Remove the outer half of the adjustable sheave (pulley).
Using a 5/32” Allen key, loosen the set screw located
on the outer half of the adjustable sheave. Remove the
outer half of the adjustable sheave by turning it counter-
clockwise. This sheave piece is threaded and therefore it
will take a few rotations to completely remove it. Once
removed, slide the belt off the cassette.
Install the new belt onto the cassette and adjustable
sheave (pulley). Re-install the outer half of the adjustable
sheave by rotating it clockwise onto the threaded shaft.
This process will be used to tighten the belt around the
perimeter of the cassette. Do not tighten the belt onto
the cassette until the beam assembly has been reinstalled.
Reverse the above procedures to re-assemble the cassette
assembly. It will also be necessary to complete the steps in
the previous sections that were used to install the cassette
brush seal and the cassette.
Figure 12: Remove cassette beam assembly
Figure 13: Loosen set screws
Figure 14: Remove cassette beam bolts
Figure 15: Remove belt from cassette
WARNING
Disconnect the main power switch to the unit before per-
forming service and maintenance procedures.
!