Specifications

22
START UP & OPERATION
INITIAL START UP
While the external disconnect is in the off position, be sure
that the terminal connectors on the top of the cylinder are
firmly secured and pushed completely down over the pins
in the cylinder.
1. Open all water supply valves external to the
humidifier.
2. Turn external disconnect switch on.
3. Turn on optional circuit breakers if present.
4. For safety, door interlock disconnects power
to cylinder(s) when the door is opened.
The humidifier may be operated for service
purposes by pulling out the knob of the
door interlock switch into a fixed, always on,
positon.
CAUTION:
HIGH VOLTAGES ARE PRESENT.
5. Turn the “On-Off-Drain” switch to the “On”
position. The Steam Indicator on the LCD
should turn yellow or green.
6. The Steam indicator will turn green if all of
the basic four controls on the home page
are green. If not, the steam indicator will be
yellow.
7. Adjust the controls as necessary to satis-
fy the requirements for steam output (see
Controls and Home Page for more informa-
tion). The humidifier will begin to operate if all
four controls are satisfied.
8. As water slowly fills into the cylinder, the LCD
Lb./Hr. output will begin to increase when
water comes in contact with the electrodes.
9. Water will continue to fill until output is 10%
above set-point. If water reaches top of the
cylinder before set-point is reached, the
“High Water Sensor” will be activated and the
fill will close.
10. When starting with a new cylinder and fresh
water, the fill and drain solenoid valve may
cycle for brief periods until water has come
to a compete boil.
11. In areas with low conductivity water, full out-
put may not be reached until the humidifier
has conditioned the water by repeated cycles
of filling, boiling and refilling. The length
of this process will vary but may require
several hours, up to a day, under certain
conditions.
AUTOMATIC DRAIN CYCLE
The circuit board automatically controls the operation of the
drain valve to react to two situations:
CONTROLLING MINERAL CONTENT:
1. When current reaches 10% above the active
set-point, the fill solenoid valve closes and
water gradually boils away in the cylinder.
Because the quantity of water covering the
electrode surface is being reduced, current
slowly falls.
2. An internal timer within the operation
algorithm starts to count seconds when
steam output drops to 95% of set-point.
3. The timer runs until steam output drops to
90% of set-point.
4. If steam output drops too rapidly during this
transition, a corrective drain is necessary
to reduce the mineral concentration of the
water.
5. If the steam output changes slowly it
indicates that mineral concentration is
satisfactory and a drain is not necessary.
6. Measurements are made during each cycle
and a drain only occurs when necessary
thereby maximizing energy efficiency.
REDUCING OVERCURRENT
1. If current to any electrodes in the cylinder
reaches more than 20% above the set-point,
the drain valve will open.
2. Draining water from the cylinder reduces
current by covering less electrode surface.
3. If current is successfully reduced to accept-
able levels normal operation continues.
4. If current is not reduced because of min-
eral blockage in the drain lines or solenoid
valve, the power contactor will be opened
for approximately 10 seconds while the drain
valve remains open.
5. If current is successfully reduced, normal
operation continues.
6. If current is not reduced the cycle is repeat-
ed 8 more times. If still unsuccessful, the
humidifier is placed in an overcurrent
shutdown, and the “Service Required” page
will be updated accordingly.