Cylinder Replacement; Figure 11 Cylinder Removal - Liebert Himod Operation & Maintenance Manual

6.5.4

Cylinder Replacement

After an extended period of operation, in accordance with life expectancy information, the cylinder is
completely used as indicated by four flashes of the amber light. When this condition is reached, a new
replacement cylinder is to be installed.
NOTE
Amber light may come on during initial start-up but does not mean
cylinder replacement. See 6.5.3 - Start-Up and Operation.
Consult factory or agent for replacement. Provide the three-digit cylinder model number from the
white label on the cylinder or provide the model, voltage, and serial number from the unit's specifica-
tion label.
When to Replace the Steam Cylinder
The steam cylinder is disposable and must be replaced at the end of cylinder life. Cylinder life is
dependent on water supply conditions and humidifier usage. Failure to replace the cylinder at the end
of cylinder life may result in unit damage. Liebert is not responsible for any damages resulting from,
or attributable to, the failure to replace a used cylinder (see manufacturer's warranty).
Removing the Old Cylinder
1. Turn off the water supply to unit.
2. The old cylinder must be drained completely before removing. This is done by pushing the auto
on/off/drain switch to the "drain" position.
3. When completely drained, push the auto on/off/drain switch to the "off" position.
4. Open the main disconnect during the entire cylinder change operation.
5. The power wires to the cylinder are attached by cylinder plugs to the electrode pins on top of the
cylinder. Pull these plugs vertically off the pins. See Figure 11.

Figure 11 Cylinder removal

6. Using slot screwdriver, loosen the steam hose clamp(s) and pull steam hose off vertically.
7. The cylinder is now ready to be lifted out of the unit.
52 Component Operation and Maintenance