Start-Up
62
CLCH-SVX010A-EN
6. If the wheel has difficulty starting, turn off the power
and inspect for excessive interference between the
wheel surface and the four diameter seals. To correct,
loosen the diameter seal adjusting screws and back the
diameter seals away from the surface of the wheel.
Apply power to confirm that the wheel rotates freely.
Readjust and tighten the seals according to
instructions in
“Energy Wheel Seal Adjustment,” p. 76
.
7.
Damper actuators (if so equipped): Stroke the
actuators to observe full open and full closure of
dampers. Adjust the actuator and/or linkage to prevent
“over-stroking” so excessive pressure is not placed on
the damper at the full open or full closed position.
CDQ Wheel Startup
1.
Set seals. See
“CDQ Seal Adjustment,” p. 74
.
2. With hands and objects away from moving parts,
activate the wheel and confirm the wheel rotation. The
correct rotation direction is counter-clockwise as
viewed from the pulley side.
3. Verify rotational speed 8-10 rotations per hour. The
wheel should be a 1/4 turn in 100-150 seconds.
4. If the wheel has difficulty starting, confirm seals
adjustment and belt tension. If belt slips, see
“CDQ
Drive Belt Adjustment/Replacement,” p. 73
.
5. Start and stop the wheel several times to confirm seal
adjustment and proper belt tracking on the wheel rim.
6. If the wheel has difficulty starting, turn off the power
and inspect for excessive interference between the
wheel surface and the four diameter seals. To correct,
loosen the diameter seal adjusting screws and back the
diameter seals away from the surface of the wheel.
Apply power to confirm that the wheel rotates freely.
Readjust and tighten the seals according to
instructions in
“Energy Wheel Seal Adjustment,” p. 76
.
7.
Damper actuators (if so equipped):
Stroke the actuators
to observe full open and full closure of dampers.
Adjust the actuator and/or linkage to prevent “over-
stroking” so excessive pressure is not placed on the
damper at the full open or full closed position.
Note:
Do not exceed the maximum rated airflow for the
wheel. The pressure drop across the wheel is not to
exceed 1.5 inches w.g.
External Insulating Requirements
The following areas should be specifically addressed, as
applicable:
•
Supply and return water piping connections
•
Supply and return refrigerant piping connections
•
Condensate drain lines and connections
•
Outdoor-air-intake duct connections
•
Discharge duct connections
•
Special requirements for low-temperature-air systems
Figure 69.
Confirm proper belt tracking on the wheel
rim
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.