50
STS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Tap/softened water
COOL DOWN HUMIDIFIER
Before performing any maintenance, allow the tank to cool down.
Note: Fresh make-up water is used to speed up cooling. Do not close the
manual water supply before cooling down the humidifi er; otherwise the
tank could stay hot for several hours.
• Insulated and uninsulated tanks will have hot surfaces.
• Close the manual shut-off valve on the inlet steam supply.
• Models with a standard drain valve and Vapor-logic controller:
–
For drain valves without the manual open lever, use the keypad to
perform the cool down process. Refer to the
Vapor-logic Installation and
Operation Manual
.
– Select Manual Drain in the control modes screen.
– Allow approximately half the water to drain out of the tank.
–
Select Auto in the control modes screen; the fi ll valve opens and the
humidifi er cools down.
–
When the fi ll valve closes, select Manual Drain in the control modes
screen and allow the tank to drain dry. The humidifi er should be cool
enough to work on.
MAINTENANCE
CAUTION
Hot discharge water
Discharge water can be as hot as
212 °F (100 °C) and can damage the
drain plumbing.
To prevent such damage from
humidifi ers without water tempering,
allow the tank to cool before draining.
Humidifi ers equipped with a water
tempering device such as a DriSteem
Drane-kooler need fresh make-up
water in order to function properly.
Make sure the water supply to the
water tempering device remains open
during draining.
Excessive supply water pressure
Supply water pressure greater than 80
psi (550 kPa) can cause the humidifi er
to overfl ow.
mc_030910_1440
Troubleshooting
The
Vapor-logic Installation and Operation
Manual
, which was shipped with your
humidifi er, is a comprehensive operation
manual. Refer to it for troubleshooting
information.
