Herrmidifier Co 6000 - Manual (Page 4)

SECTION II UNIT OPERATION
Basic Operation
Controlled humidification requires a very precise control
system. The 6000 utilizes a solid state control to monitor
performance and maintain humidity. The humidifier
evaluates the operation and alerts the operator to
problem conditions and prevents undesirable operation.
On initial start-up or a call for humidity, the humidifier will
attempt to fill to its full load amp rating. The unit will not
necessarily have a full cylinder of water. Water level
depends on the conductivity of the water. The more
conductive the water, the more current that can be
passed through the same volume of water.
If the water is not conductive enough to allow the unit to
reach full load amps (full capacity) on the initial fill; the
cylinder full light will indicate a full cylinder condition. The
unit will operate in this mode with repetitive fill and boil
cycles unit the unit has concentrated enough minerals in
the water to reach the rated amp level.
Once full load amp (FLA) has been reached, the fill valve
will shut off. The unit will now compare the rate of
change of amp draw to a time cycle.
If the water in the cylinder is mineral laden and hence
very conductive, a dram cycle will be initiated.
After the dram cycle and or the time cycle is completed,
the unit will refill and start the process over.
These cycles will repeat until:
• The call for humidity is removed.
• The cylinder is used up.
• A fault condition occurs.
On initial start-up, if the water is not conductive enough
for the unit to reach FLA, the water will stop filling when
the water reaches the cylinder f4U electrode. Once the
unit has entered a cylinder full condition it will operate
with fill and boil cycles only. By eliminating the dram
cycle, the water conductivity will be increased by
producing pure steam and letting the minerals behind.
The increased mineral levels will raise the conductivity
allowing the humidifier to draw sufficient amperage to
achieve FLA. Normal operation will then commence.
As the electrodes in the cylinder are coated with
minerals, the water level will slowly increase to the
cylinder full level. Concentration will no longer allow the
unit to reach FLA. After a period of time, the cylinder will
display the red “Service" light indicating the need to
change the cylinder.
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