Dri-Eaz DefendAir HEPA 500 Manuel Du Propriétaire page 3

Fig. 5: Replacing the prefilters
Release the four spring clips (one shown here
and lift off cover to access the prefilter(s).
Change Light
The change light (Fig. 3) illuminates when you need to
change the HEPA filter.
Electrical Outlets
You can "daisy chain" or interconnect up to 3 HEPA 500s to
customize your air filtration needs. The unit can conduct a
maximum of 12 amps when it is turned off, and 9 amps when
it is turned on. That means you can plug other equipment into
the unit, but the amperage is limited.
Setup
1. Unwrap the cord wrap completely
2. Place the HEPA 500 upright (vertical with handle at the top)
3. Plug in to a standard 115 volt outlet. Each HEPA 500 needs
3 amps to operate.
4. To switch the unit on, locate the control panel and turn the
variable speed switch clockwise (see Fig. 1 "Speed Control"
above). Then select either a maximum (500 CFM) or down to
a minimum (250 CFM) airflow rate. To maintain the optimal air
change rate, consult the IICRC S520 standards, 10.3.1.
Special Features
Daisy-chain capability
An onboard auxiliary power outlet allows for the connection of
up to three HEPA 500 units to create a maximum of 500,
1000, or 1500 CFM.
Ducting options
The HEPA 500 has a standard ductable 12 in. inlet and a
ductable 8 in. outlet, suitable for use with rigid and layflat
ducting. See "Ducting Options," p. 5, for descriptions of the
ducting types available from Dri-Eaz.
Negative Pressure Setup
The HEPA 500 can be configured to set up a negative
pressure containment area. Install the HEPA 500 outside the
containment area to draw air out. Only professionals with the
appropriate training should set up negative pressure
containment areas.
Options for Storage and Operation
The HEPA 500 can be stacked up to two high for storage or
operation. The handle of one unit fits snugly into the bottom of
a second unit. The unit can also be operated on its back, with
the outlet facing upward.
07-01489E F284-115V
Fig. 6: Replacing the HEPA filter
Remove the eight bolts and tabs (one shown here)
and lift off cover to access the HEPA filter.
For storage, HEPA 500s may be stacked horizontally or
vertically. Secure the unit properly when transporting.
About the filters
The HEPA 500 uses two types of disposable filters: prefilters
and a HEPA filter. The prefilter section can be fitted with one or
two filters. These prefilters are designed to capture larger
airborne particles and to control odors, depending on the filter
selected. The HEPA section (Position 3), is fitted with a filter
designed to capture 99.97% of smaller particles down to 0.3
microns. See Fig. 7, Filter Positions, and "HEPA 500 Filter
Configurations," p. 5, for details.
Filters should be replaced whenever they show visible
accumulation of dust. For environments with a high volume of
aerosolized particles, we recommend the use of two prefilters
to extend the life of the HEPA filter.
Always replace the HEPA filter promptly when the Filter
Change Light illuminates. Do not attempt to vacuum and reuse
the HEPA filter.
NOTICE: When using the HEPA 500 on remediation
projects, the filters should be changed and properly
disposed of after every job.
Replacement filters are available from your Dri-Eaz
distributor.
MAINTENANCE
WARNING
WARNING! ELECTRIC SHOCK HAZARD.
Disconnect from electrical supply prior to servicing
or cleaning.
WARNING! BREATHING HAZARD. Always wear
an appropriate NIOSH-approved respirator and
personal protective equipment when removing or
replacing filters, or when cleaning the HEPA 500.
Before each use
1. Inspect the electrical cord for damage, and do not use the
unit if you find any fraying, cuts, etc. Contact your local Dri-Eaz
distributor for service.
3 Dri-Eaz Products, Inc.