Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
KAH Operation & Maintenance Guide
Page: 18 of 88
SECTION 2 - START-UP & OPERATION (CONTINUED)
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 17 (below).
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 completely fastened as shown in Figure 17 (below) and Figure 18 on the next page.
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 between the wheel
surface and each one of the four diameter seals. To correct, loosen the diameter seal adjusting screws and back
adjustable diameter 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 17 (below).
FIGURE 17 - ENERGY RECOVERY WHEEL - PULLEY SIDE
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
