50
Avoid Racking of Cassette Frame
To verify, make certain that the distance
between wheel rim and bearing beam is the
same at each end of the bearing beam, to
within 6 mm (1/4”) (dimension A & B). This
amount of racking can be compensated for by
adjusting the diameter seals.
If greater than 6 mm (1/4”) (dimension C),
racking must be corrected to ensure that drive
belt will not disengage from wheel.
Polymer Wheel Startup
Open the access door and determine that the
energy recovery wheel rotates freely when
turned by hand with no interference noise.
Apply power and observe that the wheel
rotates. If the wheel does not rotate when
power is applied, it may be necessary to
readjust the “diameter air seals”.
1. By hand, turn wheel clockwise (as
viewed from the pulley side), to verify
wheel turns freely through 360º
rotation.
2. Before applying power to drive motor,
confirm wheel segments are fully
engaged in wheel frame and segment
retainers are completely fastened. (See
Segment Installation Diagram).
3. With hands and objects away from
moving parts, activate unit and confirm
wheel rotation. Wheel rotates
clockwise (as viewed from the pulley
side).
4. If wheel has difficulty starting, turn
power off and inspect for excessive
interference between the wheel surface
and each of the four (4) diameter seals.
To correct, loosen diameter seal
adjusting screws and back adjustable
diameter seals away from surface of
wheel, apply power to confirm wheel is
free to rotate, then re-adjust and tighten
hub and diameter seals, as shown in hub
seal adjustment diagram.
5. Start and stop wheel several times to
confirm seal adjustment and to confirm
belt is tracking properly on wheel rim
(approximately 6.4 mm [1/4”] from
outer edge of rim).
Diameter Seal Adjustment
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