DriSteem Vaporstream Spécifications télécharger pdf (Page 69)

VAPORSTREAM INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

RO/DI water option:

MAINTENANCE

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:

• Always switch the keypad 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.

mc_031110_0444

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.

• Insulated and uninsulated tanks will have hot surfaces.

• Verify that there is no call for humidity and that the aquastat set point

(adjusted using the keypad/display Set Up 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.

• For models with a standard drain valve:

– Manually open the drain valve.

– The ﬂoat valve 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.

• For models with end-of-season drain option:

– Use the keypad/display to perform the cool down process.

– 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 ﬁll valve opens and the

humidiﬁer cools down.

– When the ﬁll valve closes, select Manual Drain in the control modes

screen and allow the tank to drain completely dry. The humidiﬁer should

be cool enough to work on.

– For more information about using the keypad/display, see the

Vapor-logic version 5 Installation and Operation Manual.

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

™

mc_060110_1640

Cool-down procedure

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DriSteem Vaporstream Spécifications Page 69

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