Specifications

DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual • Page 33
Tap/softened water
Table 33-1:
Skim time settings
Dip switch
Skim time
45
Option Off Off 3 seconds
Option On Off 9 seconds
Factory
settings
Off On 32 seconds
Option On On 45 seconds
The best way to determine how often your humidifier needs
maintenance is to remove the tank cover and inspect it for mineral
deposits after three months of duty. Hours of operation and duty
cycle will determine your maintenance schedule, as will water
quality.
Water quality and maintenance
Maintenance requirements vary with water quality, because tap and
softened water carry a variety of minerals and other materials in a
mix that varies from location to location. Very hard (high mineral
content) water requires more frequent cleaning and drain/flush
cycles than water with low mineral content.
Softened water significantly reduces mineral accumulation inside
the humidifier.
Note: S
olids, like silica, are not removed in the softening process.
Skim duration
Skim duration determines the quantity of water skimmed with each
fill cycle and is field adjustable:
• LW series controller, dip switches on controller board
(see Table 33-1)
• Optional Vapor-logic4 controller, keypad/display or web
interface (see Vapor-logic4 Installation and Operation Manual)
Skimming reduces the need for frequent humidifier cleaning.
Each time the tank refills, it fills to a level just above the lip of the
skim/overflow fitting. A portion of the fill water flows out of the
skim/overflow fitting to the drain, which flushes minerals left by the
previous evaporating cycle and skims away surface residue.
Both humidifier cleaning and heated water flowing to the drain are
operational costs. DRI-STEEM recommends that the user observe
and adjust the skim duration to achieve a balance between reducing
mineral buildup and conserving heated water.
mc_060210_1430-CRUV
WARNING
Electric shock hazard
Contact with energized circuits
can cause severe personal injury or
death as a result of electric shock. To
prevent shock, disconnect electrical
power before performing service or
maintenance procedures on an part of
the humidification system.
When performing maintenance on the
humidifier:
• If the humidifier is equipped with a
Vapor-logic4 controller, use the keypad
to change the control mode to Standby.
• Place all power disconnects in OFF
position and lock in OFF position.
• Close the field-installed manual supply
water shut-off valve.
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Maintenance