AAON RK Series - Manual (Page 9)

9
SERVICE
CAUTION !
Disconnect electrical power before servicing
energy recovery cassette.
Always keep hands away from bearing support
beam when installing or removing segments.
Failure to do so could result in severe injury to
fingers or hand.
Segment Installation & Replacement
Wheel segments are secured to the wheel frame by a
Segment Retainer which pivots on the wheel rim and
is held in place by a Segment Retaining Catch.
Segment Retainer
To install wheel segments follow steps one through
five below. Reverse procedure for segment removal.
1. Unlock two segment retainers (one on each side of
the selected segment opening.
2. With the embedded stiffener facing the motor side,
insert the nose of the segment between the hub
plates.
Segment Installation
3. Holding segment by the two outer corners, press the
segment towards the center of the wheel and inwards
against the spoke flanges. If hand pressure does not
fully seat the segment, insert the flat tip of a screw
driver between the wheel rim and outer corners of the
segment and apply downward force while guiding the
segment into place.
4. Close and latch each Segment Retainer under
Segment Retaining Catch.
5. Slowly rotate the wheel 180º. Install the second
segment opposite the first for counterbalance. Rotate
the two installed segments 90º to balance the wheel
while the third segment is installed. Rotate the wheel
180º again to install the fourth segment opposite the
third. Repeat this sequence with the remaining four
segments.
Wheel Drive Motor & Pulley Replacement
1. Disconnect power to wheel drive motor.
2. Remove belt from pulley and position temporarily
around wheel rim.
3. Loosen set screw in wheel drive pulley using a hex
head wrench and remove pulley from motor drive
shaft.
4. While supporting weight of drive motor in one hand,
loosen and remove (4) mounting bolts.
5. Install replacement motor with hardware kit
supplied.
6. Install pulley to dimension as shown and secure set
screw to drive shaft.
7. Stretch belt over pulley and engage in groove.
8. Follow start-up procedure.