DriSteem VAPORMIST Specifications download pdf (Page 35)

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Figure 33-1:

Cover enclosure screw cap detail

OM-778-3

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Humidifier De-scaling Solution

Scale buildup on humidifier heaters acts

as an insulator, reducing humidifier

performance while increasing energy

costs. To keep humidifiers operating as

efficiently as possible, remove scale with

DRI-STEEM's Humidifier De-scaling Solution,

available for purchase from your DRI-STEEM

representative or distributor.

The De-scaling Solution cleans without risk

of corroding humidifier tanks or welds;

and there is no off-gassing, flammability,

or added heat risks associated with other

cleaning solutions. The De-scaling Solution

also cleans surfaces unreachable by hand

scraping.

DRI-STEEM's Humidifier De-scaling Solution

is the only approved cleaner/de-scaler for

use with DRI-STEEM humidifiers. Use of

other cleaners/de-scalers may void your

DRI-STEEM warranty.

mc_021908_1410

Cool down humidifier before beginning maintenance

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

humidifier; otherwise the tank could stay hot for several

hours.

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point (adjusted using the keypad/display Setup screens) is less

than room temperature (default setting is 40 °F [4 °C]) so that the

heaters do not energize while cooling down the tank.

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– Manually open the drain valve by moving the valve lever

located on the back of the drain valve to the manual open

position.

– The fill valve eventually opens.

– Let the fill water run until the tank is cooled; then shut off the

field-installed manual supply water shut-off valve.

– Let the tank drain; then manually close the drain valve.

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– For drain valves without the manual open lever, use the keypad

to perform the cool down process.

– Go to the control modes screen and select Manual Drain.

– Allow approximately half the water to drain out of the tank.

– In the Control Modes screen select Auto; the fill valve opens

and the humidifier cools down.

– When the fill valve closes, select Manual Drain in the Control

Modes screen and let the tank drain dry. The humidifier should

be cool enough to work on.

– For more information about using the keypad, see the

Vapor-logic

3 Installation and Operation Manual.

mc_052708_1145

Inspection and maintenance

"OOVBMMZ (also recommended when maintenance is performed)

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stage by comparing to the wiring diagram located inside the

subpanel cover. This identifies any burned out heaters. Only

qualified electrical personnel should perform this task.

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and off to verify they are functioning. These include:

– High limit switch

– Airflow proving switch

– Low water level probe. Pull out probe plug; fill valve should

energize.

mc_060208_1005

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DriSteem VAPORMIST Specifications Page 35

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