Specifications

44
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
RO/DI water option
MAINTENANCE
RO/DI humidifiers use RO/DI water. Because these water types are mineral
free, cleaning the evaporating chamber should not be necessary. However,
there are some maintenance steps that should be followed to ensure all parts of
the unit are in working order.
Important: Verify regularly that water processing equipment is operating
correctly. The presence of chlorides in improperly processed deionized
water will eventually cause pitting and failure of the humidifier tank and its
components. Damage caused by chloride corrosion is not covered by your
DriSteem warranty.
COOL DOWN HUMIDIFIER
If the tank is hot, cool it down by opening the manual ball valve on the side of
the tank. The float valve will open allowing cool water to run into the tank until
it is cool enough to handle. Then shut off the water supply, and allow the tank
to drain completely.
INSPECTION AND MAINTENANCE
1. Remove the evaporating chamber:
• Remove the two fasteners on each side of the cover enclosure. See
Figure 41-1.
• Remove the enclosure. See “Electric shock hazard” Warning at left.
Note: If the humidifier has an SDU mounted directly above it, remove the
SDU cover before removing the humidifier cover.
• If the tank is hot, follow the instructions in “Cool down humidifier” above
before proceeding.
• Shut off the water supply.
• Allow the tank to drain completely.
• Shut off the electrical supply.
• Disconnect the fill line at the fill fitting.
• Disconnect the electrical plugs between the tank components and the
back of the electrical panel (includes: power plug, low water switch
plug, tank temperature sensor plug and thermal trip plug).
Important: Disconnect by pulling on plug housing. Do not disconnect
by pulling on cord or wires.
• Disconnect the drain union on the back left corner of the frame.
• Disconnect the steam supply hose from the top of the tank.
• Lift the tank foot above the frame flange and slide the tank assembly
forward to remove.
WARNING
Hot surface and hot water hazard
Do not touch the tank or drain piping
until the unit has had sufficient time to
cool, or serious injury can occur.
Opening the drain valve when the
tank is hot can discharge water with a
temperature up to 212 °F (100 °C) into
the plumbing system. This can cause
damage to the plumbing system if the
humidifier is not properly connected
to a water tempering device such as a
DriSteem Drane-kooler™.
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WARNING
Electric shock hazard
Do not remove humidifier electrical
panel cover, heater terminal cover, or
subpanel access panels until electrical
power is disconnected. Improper wiring
or contact with energized circuits
can cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Only qualified electrical personnel
should perform maintenance
procedures.
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