6
exposure levels. Such atmospheres may require the use of intrinsically safe equipment, specific engineering
controls, and personal protective equipment in accordance with Occupational Safety and Health
Administration (OSHA), Environmental Protection Agency (EPA), Canadian Standards Association (CSA), and
other federal, state, provincial and local regulations.
Warning: This equipment is not classified as “intrinsically safe” and should not be used in the following
hazardous locations as defined by the Underwriters Laboratories: Class I Division 1, Class I Division 2, Class I
Zone 0, Class I Zone 1, Class I Zone 2, Class II Division 1, Class II Division 2, Class III Division 1, Class III Division
2. Refer to http://en.wikipedia.org/wiki/Electrical_equipment_in_hazardous_areas
Warning: Do not use this unit near sparks, open flames or other possible sources of ignition.
OPERATING THE UNIT
IDENTIFYING KEY COMPONENTS OF THE CONTROL PANEL
1.
Power Cord - Hardwired, 14/3
AWG SJTW power cord for
connection to electrical outlet.
2.
Power Indicator - Green light
that indicates speed control
switch is “ON” and system is
connected to power source.
3.
Speed Control Switch - Serves
as the power switch and
provides a variable adjustment
to the speed of the motorized
impeller.
4.
Filter Change Indicator – Red
light that indicates excessive
restriction on intake or loading
of the filter(s) and that filter
change procedures should be
followed. Check the Filter
Change Indicator when the unit
is operating at “HIGH” speed.
5.
Circuit Breaker - 12 amp circuit breaker that provides protection for the unit’s electrical components.
6.
GFCI Receptacle - Electrical safety device that will trip and stop the flow of electricity if leakage of current is
detected from the unit or an electrical device plugged into the GFCI receptacle. The PRED750 can supply a
total of 8 amps of electrical power for additional equipment that is connected to the GFCI receptacle. Do
not exceed this 8 amp limit. Note: If the equipment connected to the GFCI receptacle draws more than a
total of 8 amps, the circuit breaker on the control panel and/or the building breaker will trip. This condition
can be remedied only by reducing the total amperage draw.
