York XT AHU - AIRXCHANGE ENERGY RECOVERY WHEEL START-UP

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 Figure 23 on page 31.
2. Beforeapplyingpowertothedrivemotor,conrm
that the wheel segments are fully engaged in the
wheel frame, and the segment retainers are com-
pletely fastened as shown in Figure 23 on page
31 and Figure 24 on page 32.
3. With hands and objects away from the moving
parts, activate theAHU, and conrm the wheel
rotation. The wheel rotates clockwise from the
pulley side.
4. Ifthewheelhasdifculty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conrmthewheelisfreetorotate,then
readjust and tighten hub and diameter seals as
shown in Figure 25 on page 32.
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