Dri-Eaz DefendAir EX Kullanıcı El Kitabı - Sayfa 2

Yıkayıcı Dri-Eaz DefendAir EX için çevrimiçi göz atın veya pdf Kullanıcı El Kitabı indirin. Dri-Eaz DefendAir EX 17 sayfaları. Air scrubber
Ayrıca Dri-Eaz DefendAir EX için: Kullanıcı El Kitabı (13 sayfalar)

Sayfayı Yazdır

Use the DefendAir as a negative air machine for remedia-

tion. A negative air machine vacuums air from a containment

area to create a negative air pressure on the inside. See

"Negative Air Pressure" below for more details.

Run the DefendAir without interruption for the duration of

every remediation job. The DefendAir filters 99.5% of parti-

cles 0.3 microns and larger, such as mold spores and fungi

from the air passing through the filter.

If either Filter Change Light illuminates during the reme-

diation process, immediately change the appropriate filter.

See "Changing Filters" for more information. Upon comple-

tion of remediation, replace all filters and clean the unit thor-

oughly to avoid cross-contamination of other spaces. Always

wear an appropriate NIOSH-approved respirator and, if

needed, other appropriate personal protective equipment

when removing or replacing filters or pre-filters, or when

cleaning the DefendAir. See "Cleaning the Unit" for more

information.

Containment During Remediation

Containment is a critical part of remediation. When damaged

materials are disturbed during the remediation process, par-

ticles are released into the air. These particles could include

mold spores, bacteria and other hazardous particles. A con-

tainment barrier prevents particles from spreading into

nearby unaffected areas while the DefendAir filters the air.

Use the DefendAir EX to maintain a negative air pressure

inside the containment area. At no time should the DefendAir

EX be used to supply air to the containment area. See

"Negative Air Pressure" for more information.

To set up a containment barrier, use 6-mil fire-retardant

polyethylene or a comparable material. For smaller areas,

poly sheeting can be affixed to walls and ceilings with duct

tape. Larger areas may require the construction of a steel or

wood stud frame to support the poly sheeting. All supply and

air vents, doors, chases, and risers within the containment

area must be sealed with poly sheeting to minimize the mi-

gration of contaminants. Cover any and all materials within

the work area that are not being remediated. Access to the

containment area should be by slit entry with a covering flap

on the outside.

Always wear an appropriate NIOSH-approved respirator,

and, if needed, other personal protective equipment when

working either inside or outside the containment area. The

foregoing procedures are not a substitute for compliance with

applicable U.S. Environmental Protection Agency (EPA)

guidelines for mold remediation or any applicable Occupa-

tional Health and Safety Administration (OSHA) standards

for containment and remediation. Consult the EPA guide-

lines at www.epa.gov for more information on appropriate

health and safety precautions for mold remediation activity

and the OSHA guidelines at www.osha.gov for more informa-

tion on appropriate containment and remediation procedures.

Negative Air Pressure

An area has negative air pressure when the air pressure in-

side is lower than the air pressure outside. Since uneven

pressures seek equilibrium, high-pressure air from outside

will move toward the low-pressure air through any opening,

regardless of size. This is advantageous for remediation. Re-

moving filtered air from a contained area by ducting creates

a negative pressure inside the affected area. High-pressure

air from the rest of the structure will flow toward the low-

pressure area. Since the airflow is always toward the af-

fected area, the contamination has less chance of spreading.

To create a negative pressure, install the DefendAir out-

side the containment area and vacuum air out of the affected

area with ducting. Use proper instrumentation to monitor air

pressures. See "Balancing CFM for Containment" for more

information. A tightly sealed containment area will aid in cre-

ating an effective negative pressure. If the containment area

is well sealed, the poly sheeting should billow in toward the

room at all points.

Balancing CFM for Containment

Use a manometer to balance the DefendAir's cubic feet per

minute (CFM) with the size and style of containment. Too

little CFM will not create sufficient negative air pressure in

the containment area. Too much CFM might collapse the

containment barrier. As a general rule, the larger the con-

tained area, the greater the CFM requirement. A manometer

will show the pressure differential between your contained

and unaffected area. Adjust the variable speed switch on the

DefendAir to maintain the desired pressure differential.

Beware of Backdrafting

Use extreme caution when creating negative air pressures in

structures with open combustion appliances such as fire-

places, boilers, furnaces, water heaters and HVAC systems.

It is possible to overpower the exhaust ventilation of these

units with negative air pressure inside the structure. Too

much negative air pressure will backdraft deadly carbon

monoxide fumes. Inspect the structure thoroughly for the

possibility of backdrafting. It may be necessary to turn off gas

appliances as well as the gas supply for safety during reme-

diation.

Recommended Installations

STANDARD REMEDIATION: For the majority of remedia-

tions, install the unit outside the containment area. Use inlet

ducting to pull air out of the containment area and create a

negative air pressure. Use a manometer to measure air

pressures and determine the proper CFM setting on the De-

fendAir.

LIGHT REMEDIATION: For light remedial work, the Defen-

dAir may be installed inside the containment area and used

solely as a highly efficient filter to recirculate scrubbed air to

the work area.

CATEGORY 1 (CLEAN) WATER LOSS: Place the DefendAir

near the center of the affected area. No ducting is required.