General Equipment EP8HL, Operator'S Manual

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EP8HL HAZARDOUS BLOWER
FORM GOM7069501, VERSION 1.2
23
TO MINIMIZE THE POTENTIAL FOR A STATIC
DISCHARGE BEING THE IGNITION SOURCE OF AN
EXPLOSION IN A HAZARDOUS TYPE LOCATION,
DO NOT USE A NONFACTORY SUPPLIED,
STATICALLY CONDUCTIVE DUCT WITH THE
BLOWER.
A NONFACTORY, STATICALLY
CONDUCTIVE DUCT MAY NOT ALLOW FOR
PROPER GROUNDING TO THE BLOWER
HOUSING.
IMPROPER STATIC CHARGE
DISSIPATION CAN ALLOW A RANDOM SPARK TO
BE THE IGNITION SOURCE OF AN EXPLOSION,
RESULTING IN PROPERTY DAMAGE AND/OR
PERSONAL INJURY.
AN IMPROPER DUCT CLAMPING PROCEDURE
WILL NOT PROPERLY GROUND THE STATICALLY
CONDUCTIVE DUCT TO THE BLOWER FRAME. AN
IMPROPER GROUND CONNECTION WILL NOT
ALLOW A STATIC ELECTRICAL CHARGE FROM
BEING PROPERLY DISSIPATED THROUGH THE
GROUND WIRE OF THE ELECTRIC POWER CABLE
OF THE BLOWER. IMPROPER STATIC CHARGE
DISSIPATION CAN ALLOW A RANDOM SPARK TO
BE THE IGNITION SOURCE OF AN EXPLOSION,
RESULTING IN PROPERTY DAMAGE AND/OR
PERSONAL INJURY.
2) For normal suction (air evacuation) operations,
connect the part number SCFD815 or SCFD825
statically conductive duct to the Blower inlet. Follow the
same installation procedure to the Blower inlet as
outlined above. FIGURE 7.
3) Maximum recommended duct length is 25 feet
(7.6 m). A duct length exceeding this nominal figure
can significantly reduce the air flow delivery
performance of the Blower. However, field experience
indicates that there can be an occasion where statically
conductive ducts are required to be coupled together
for a specific job application. If, after properly reviewing
all safety and operational considerations of the job
application, the decision is still made to couple two
ducts together, follow this procedure:
a) Visually inspect each duct for proper structural
integrity.
b) Inspect each static ground wire and clamp for proper
structural integrity and freedom of dirt and /or corrosion
accumulation.
c) Attach the cuff ends of two statically conductive
ducts together by the use of the part number FD8C
Connector. This unit is fabricated from galvanized steel
or by the use of another spark proof construction
method that is statically conductive. Secure the cuffs
with a spark proof strapping method.
FIGURE 7
DO NOT UTILIZE CLAMPING DEVICES THAT ARE
NOT OF SPARK PROOF CONSTRUCTION. THE
USE OF IMPROPER CLAMPING DEVICES CAN
ALLOW A RANDOM SPARK TO BE THE IGNITION
SOURCE OF AN EXPLOSION, RESULTING IN
PROPERTY DAMAGE AND/OR PERSONAL INJURY.
d) Connect the static ground clamps together.
FIGURE 8.
4) Determine that the statically conductive duct is
properly attached to the blower housing. If it is
determined that the duct can not be properly installed
as outlined above, contact the Customer Service
Department for assistance BEFORE utilizing the
Blower. There is no charge for this service.