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AIR VELOCITY
Air velocity is critical to operation of the unit and should
not exceed 500 FPM. Do not adjust drive to exceed this
velocity.
Intake Velocity
Discharge Velocity
Internal Static
EXTERNAL STATIC
These units are not normally set up for ducting. Should
ducting be necessary, consult the factory regarding
blower and motor combinations.
SIZING AND LOCATION
The following are the general guidelines for sizing and
location of units.
GENERAL AIR CLEANING
Sizing of equipment is based on the recirculation of clean
air in the contained area. Determine the total cubic
footage of the area to be cleaned. Determine the number
of air changes that would be appropriate. This total is the
actual CFM necessary. Divide this figure by the capacity
of the SC unit that will be used and this determines the
number of units required.
Example:
Body Shop
Desired air recirculation = 10 air changes/hr
Size of room (L x W x H) = 100 x 75 x 20 ft
Maximum CFM of SC-924 = 2100 CFM
L x W x H X Air Changes/Hour = Total CFM
Maximum CFM of Air Cleaner
150,000 x 10 = 25,000 CFM
60
25,000 = 11.9 = 12 units
2,100
In the example above, 12 units should be placed so that a
uniform air flow pattern is developed. A good air flow will
ensure good cleaning.
MAINTENANCE SCHEDULE
The collecting cell,s ionizers, prefilters and after filters
must be cleaned on a regular basis for the unit to function
at its peak efficiency. The frequency of cleaning will vary
from one environment to another. For instance, in a
SC-924
500 FPM
2100 FPM
.25 in WG
60
Total CFM
= No. of units
welding shop you may be required to wash the cell every
3 days to 2 weeks depending on the work load of the unit.
Every environment will be different. Inspect the unit
frequently until you determine the right washing schedule
for your particular application.
If your unit is equipped with an activated carbon filter it
will need to be refilled, depending on the environment,
every 3 - 6 months. Do not wash the carbon filter as this
will render it useless.
WASHING INSTRUCTIONS
1. Turn both the fan and power supply switches OFF
and wait 15 seconds for high voltage to dissipate.
2. Open the cell access door and remove the collecting
cells, ionizers, prefilters and after filters.
Avoid washing the cell or ionizer with a high pressure
cleaner as this may cause damage to the cell plates
or fins.
The cell plates are sharp. Handle with care. Take care
not to damage the cell by hitting the cell plates. The
cell plate spacing is critical for proper operation of the
unit.
3. If the cell plates are heavily coated it may be
necessary to spray the cells with hot water to remove
the excess contaminate before applying detergent.
Allow excess water to drain off the cell before
applying detergent.
4. Place the cell and ionizer in a tub and spray
completely with DAX Detergent, allowing detergent
to run down both sides of the plates and ionizing fins.
Let sit for 5 minutes.
5. Rinse the cell well with hot water (140ºF / 60ºC
maximum).
6. If dirt remains on plates, let the cell soak in hot soapy
water for 30 minutes, then repeat the washing
instructions listed above. Never use any instrument
to clean the cell, as this may damage the ionizing
wires or cell plates.
7. An alternate method to clean the cell and ionizer is to
soak them in a tub of Dax for 10-15 minutes. The Dax
can be reused numerous times as long as the cell is
kept from sitting in the sludge which will collect in the
bottom of the tub. Never allow the cell or ionizer to
sit longer than 15 minutes in the DAX or they will
discolour. The tub should be covered when not in
use to prevent evaporation.
CAUTION
CAUTION
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