
Nu-Calgon Instruction Bulletin 3-457
Bio-Fresh®cd Fogger
Instructions
The Bio-Fresh cd Fogger provides the operator with the
widest range of options available for cold fog applications.
The nozzle, attached to the flex hose, allows the user
to easily direct the fog in, under and at objects. The
convenient flow adjustment knob located at the nozzle
enables the operator to change the liquid flow rate being
dispensed.
The operator can adjust the liquid flow to dispense
materials in droplet sizes as small as 20 microns (water
based chemicals at room temperature). Droplets of this
size remain suspended in air for extended periods of
time and are used primarily for insecticide applications to
control flying insects.
Droplet size will increase as the liquid flow rate is
increased and will average approximately 80 microns
when the liquid flow is adjusted for maximum output.
Larger droplets are dispersed by air flow and can settle
on surfaces. This characteristic makes them useful for
applying disinfectant, deodorizers and chemicals used for
coating the insides of heat ducts or other surfaces.
PRECAUTIONARY STATEMENTS SECTION OF THE
LABEL INSTRUCTIONS.
• Filltheunitwiththedesignatedamountofchemical.
• Placethe machinein the appropriate location forthe
fogging application.
• Set the desired flow rate by turning the liquid flow
adjustment knob located at the nozzle to the desired
position. The output chart on the unit should be used
as a guide.
• Turn the unit on and operate for the time period
calculated.
• Prior to turning the unit off, turn the liquid flow
adjustments to the “OFF” position.
Safe and effective use
CAUTION: ALWAYS FOLLOW LABEL INSTRUCTIONS
FOR THE CHEMICAL SOLUTION
Conduct a pretreatment walk-through and inspection to
ensure that nothing is left to chance. Shut off pilot lights
and gas flames. Turn off exhaust fans and close air vents
and registers to keep material from drifting out of desired
area. Set up any necessary air circulating instruments,
such as fans, in the area to be treated.
Follow the label instructions for the chemical to be fogged
in determining how much is required. Determine the liquid
flow rate desired: the lower the flow rate the smaller the
droplet size, (NOTE: particle size varies with temperature
and viscosity of the material being dispensed). Using
the chemical quantity and liquid flow rate information,
calculate the amount of time the fogger should be in
operation to dispense the material required.
After completing the above, operation of the unit is
accomplished as follows:
CAUTION: ALWAYS WEAR THE APPROPRIATE
PROTECTIVE CLOTHING AS SPECIFIED IN THE
The Bio-Fresh cd Fogger delivers a wet fog. Care must be
taken to prevent a wetting action on the surfaces near the
fogging machine. Time the application carefully to ensure
that the proper dosage of material is used.
Maintenance
Inspect the venturi after use to check for wear or damage.
If the venturi is worn or damaged the unit will not
deliver the proper droplet size and it should be replaced
immediately.
Check all soft part (hoses, gaskets, o-rings) for wear
regularly. If they appear cracked, brittle or stiff, replace
immediately.
As with any piece of chemical application equipment,
always rinse and flush all containers, lines and nozzles
with clean water or a suitable solvent after each and every
use. This will prevent the build-up of residues and debris
which can hinder the performance of the equipment.
Cleaning after each application will ensure that the next
time you use the Bio-Fresh cd Fogger you won’t have to
worry about what materials were last used and possible
incompatibility with any materials to be used.
2008AltomCt.•St.Louis,MO63146•800-554-5499•www.nucalgon.com
Calgon is a licensed trade name.

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PARTS LIST
PART NO.
NC2332
NC2334
NC2346
NC2331
NC2330
NC2333
NC2329
NC2352
NC2357
NC2359
NC2353
NC1433
NC2354
NC2385
NC2326
NC2308
NC2349
NC2374
NC2314
NC2311
NC990
NC2315
NC1103
NC1128
NC2358
NC2319
NC2312
NC2316
NC1241
NC1246
NC2375
NC2327
NC2323
NC2305
NC2306
NC2405
NC2408
NC1145
NC2355
DESCRIPTION
Clip
Spring
Venturi
Valve Rod/ Knob Assy
O-Ring
Sleeve
Screw
Screw
Hex Nut
Spacer
Nozzle
Spring Clamp
Screw
Flex Hose Assy
Flat Washer
Screw
Pressure Tube, Upper
Supply Tube, Upper
Electric Cord, 110 VAC.
Switch, 110 VAC.
Boot f/Switch
Strain Relief
Closure
O-Ring
Tube Retainer
Pressure Tube, Lower
Strainer
Wire Connector
Tank Barb
Angle Barb
Supply Tube, Lower
Grounding Screw
Motor, 110 VAC.
Motor Guard
Screw
Tank
Housing
Screw
Mount Plate
Bio-Fresh® cd Fogger
Part Number 4693-0
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Calgon is a licensed trade name.