39 | Maintenance and Servicing
Required Maintenance
The RH humidifier has been designed to require very little maintenance. Regular maintenance
consists of checking the humidifier to insure it is in good condition, replacing the cylinder when
the software advises that the cylinder is spent and cleaning out the drain valve whenever the
cylinder is replaced.
Cylinder Spent Fault
When the cylinder is spent the RH will stop operating and the yellow LED will flash in a repeating
pattern of 4 flashes. See Table 8: Troubleshooting RH Faults on page 49 for more information
on other flash sequences. At this time the cylinder must be replaced.
The steam cylinder is disposable and must be replaced at end of cylinder life. Cylinder life is
dependent on water supply conditions and humidifier usage.
Replacement Cylinder
The label on the existing cylinder identifies the cylinder type in its top left corner. When ordering
a cylinder always quote the three or five digit model number on the label, the humidifier’s serial
number and the humidifiers voltage. Serial number and voltage are located on the specification
label on the left side of the humidifier.
Figure 32: RH Cylinder
Note: Nortec recommends keeping a replacement cylinder in stock throughout the
humidification season. This will prevent possible downtime when the humidifier
reports cylinder end of life.
Caution: Failure to replace the cylinder at the end of cylinder life will result in improper
operation and may result in damage to the humidifier. Nortec is not responsible for
any damages resulting from, or attributed to, the failure to replace a spent cylinder
(see Manufacturer’s Warranty).
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