System Repairs/Component Replacement; Humidifier Cylinder Replacement - Black Box CRCW-12 User Manual

Chapter 5: Maintenance

5.3.2 System Repairs/Component Replacement

All electrical connections should be checked to ensure they are tight and properly made. Check all circuit breakers, contactors,
and wiring. The contactors should be examined and replaced if contacts are worn or pitted.
1. Turn off power to unit at the main power disconnect switch.
2. Remove the old component and install the new one.
3. Turn on the power at the main power disconnect switch and start the system.
5.3.2.1 Humidfier Cylinder Replacement
Remove the rear access panel from the Cold Row CW cabinet to access the humidifier.
After an extended period of operation, the yellow LED on the humidifier control panel will repeatedly flash four times indicating
that the cylinder is completely used and a replacement cylinder must be installed. The cylinder is disposable and cylinder life is
dependent on water supply conditions and humidifier usage. Refer to the humidifier operator's manual supplied under separate
cover for detailed instructions on changing the cylinder. The following procedures are to be followed when replacing the cylinder.
Figure 5-3. Humidifer cylinder.
CAUTION: Failure to replace the cylinder at the end of cylinder life may result in humidifier damage.
NOTE: Decrease the humidity setpoint below ambient humidity to allow the cylinder to cool down before removing the cylinder.
1. Turn the A/C unit Off by pressing (and holding) the Enter key on the E² controller.
2. Turn off the water supply to the humidifier.
3. Open the door of the A/C unit and turn the main power disconnect switch on the electric box Off.
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