4
Example: How many air filtration devices (each with 600 CFM rated airflow) would be required to
provide 8 ACH (including a safety factor) in a 40ft L x 24ft W x 10ft H containment area?
a.
V = 40ft x 24ft x 10ft = 9600ft³
b.
Design ACH = 8
c.
Quantity of AFD required = (9600ft³ x 8 ACH) / (600CFM x 60) = 76,800/36,000 = 2.13
units
d.
2.13 units → 3 units required.
ELECTRICAL REQUIREMENTS
1.
The PREDATOR® Portable Air Scrubber requires a minimum of 110 volts AC, 60 Hz to operate properly;
however, maximum airflow performance requires 120 volts AC, 60 Hz.
2.
Due to momentary start-up current surge, the unit requires a 15 amp circuit that is free of other loads.
3.
Extension cords used for this unit must be UL-listed, heavy duty No. 14/3 AWG SJTW industrial grade 3-
wire type. Use of larger numerical gauge (lower capacity wire) power cord(s) may result in electrical
shock, fire hazards and/or damage to unit. The cord(s) must be in good condition and in continuous
lengths (no splicing) and should not exceed a total of 50 feet in length. Make certain that any extension
cords used do not reduce power to the unit to less than 110 volts. Use of a voltmeter to confirm
adequate voltage is recommended.
4.
Check to ensure that any circuit to which the unit is connected is protected by a 15 ampere circuit
breaker. The unit itself is equipped with a 12 amp circuit breaker.
5.
This unit should be connected to a three-prong, properly grounded electrical outlet equipped with a
Ground Fault Circuit Interrupt (GFCI) device. A GFCI is an electrical safety device that will trip the circuit
and stop the flow of electricity if leakage of current is detected.
Important Note: The GFCI on this unit's control panel only detects leakage of current from the unit or
an electrical device plugged into the GFCI. This unit should be plugged into a GFCI receptacle at the
power source to protect the power cord and the unit. This GFCI will trip the circuit if it detects
leakage of current from the power cord or unit.
6.
To avoid personal injury, fire hazards and/or damage to the unit's electrical system and power cord, do
not connect or disconnect the power cord to an electrical outlet unless the speed control switch is
“OFF”.
