JOHNSON CONTROLS
31
SECTION 2 - START-UP AND OPERATION
FORM 102.20-OM2
ISSUE DATE: 6/01/2015
2
Airxchange
®
Start-Up Procedure
1. With the power off, turn the wheel clockwise
(as viewed from the pulley side) to verify that
the wheel turns freely through a 360° rotation as
shown in
2.
Before applying power to the drive motor, confirm
that the wheel segments are fully engaged in the
wheel frame, and the segment retainers are com-
pletely fastened as shown in
and
.
3. With hands and objects away from the moving
parts, activate the AHU, and confirm the wheel
rotation. The wheel rotates clockwise from the
pulley side.
4.
If the wheel has difficulty starting, turn the power
off, and inspect it for excessive interference be-
tween the wheel surface and each one of the four
diameter seals. To correct, loosen the diameter
seal adjusting screws and back adjustable diam-
eter seals away from surface of the wheel. Apply
power to confirm the wheel is free to rotate, then
readjust and tighten hub and diameter seals as
shown in
FIGURE 23 -
ENERGY RECOVERY WHEEL - PULLEY SIDE
LD09642
Ball Bearings (2)
Bearing Support
Beam - Motor Side
Drive Motor
Drive Pulley
Belt
Bearing Support
Beam - Pulley
Side
Bearing Access
Cover (2)
Diameter Seal
Adjusting Screws
Removable Energy
Transfer Segment (8)
Wheel
Rotation