
OPERATING MANUAL
MODELS: EPF-10P.3 SERIES
C US
LARSON ELECTRONICS, LLC.
9419 US-HWY 175, Kemp, Tx, 75143
Telephone (903) 498-3363
Toll Free (800) 369-6671
Fax No. (903) 498-3364
hp://www.larsonelectronics.com
e-mail: sales@larsonelectronics.com

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Larson Electronics, LLC Phone: (800) 369-6671 Fax: (903) 498-3364 www.larsonelectronics.com
Typical Vent Setup Procedure
Place fan or blower a minimum of
Blower or Fan
Select a blower or fan based on environmental
Manhole Lid
Universal Mount
90° Elbow
Manhole
Opening
Saddle
Vent
proper set-up, please contact Customer Service.
STEP 2) Install 90° elbow on top of Saddle Vent
STEP 3) Install duct on boom of Saddle Vent
STEP 4) Install universal mount on Saddle Vent and
set in place with manhole lid for support
STEP 5) Install duct from blower to 90° elbow
STEP 6) Turn on blower or fan
Warning: For explosive environments,
follow ANSI/API 2015 and 2016 procedures
WARNING: HAZARDOUS LOCATION OPERATIONS
Use an explosion-proof or intrinsically safe blower or fan,

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Larson Electronics, LLC Phone: (800) 369-6671 Fax: (903) 498-3364 www.larsonelectronics.com
SAFETY PRECAUTIONS
READ AND FOLLOW ALL INSTRUCTIONS BELOW
WARNING
“EPF”
DO NOT
If volale or explosive vapors are suspected, use explosion proof elecrc blower, explosion proof
contractors fan.
IMPORTANT
-Approved for outdoor use.
-Thermally protected.
- To reduce the risk of electric shock, connect only to an outlet provided with a ground fault interrupt ing device.
-Warning! Explosion hazard. Do not connect or disconnect while circuit is live unless area is known to be
non-hazardous.
SPECIFICATIONS
Motor Type
Outlet Size 8” Diameter (203 mm)
Flow Rates
25 ft. of Duct with one 90° bend: 786 CFM
220 VAC, 50/60 Hz, 1/4 HP
Class 1 & 2, Group C,D,E,F,G
Free Air: 974 CFM

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Larson Electronics, LLC Phone: (800) 369-6671 Fax: (903) 498-3364 www.larsonelectronics.com
SETUP AND OPERATION
STEP 1)
Place fan in a clean fresh air environment.
space is unacceptable, consult a trained professional.
STEP 2)
NOTE: The use of conducve ducng is recommended when opearng in potenally explosive environments. Assue that the fan is properly grounded before operang and the ground wire in the conducve
ducng is aached to the fan and Saddle Vent, if used.
CAUTION:
not achieved, the duct should be removed from service.
STEP 3)
energized.
STEP 4)
The “ON/OFF” switch is integrated in the motor. Pull the “ON/OFF” switch knob outward to turn the fan “ON”.
PROBLEM POSSIBLE CAUSE SOLUTION
Air intake blocked
Possible internal damage
housing for debris, damage, and loose screws.
Note: Never run fan for extended periods
Possible external damage
Circuit breaker trips Voltage output insuffi cient Test outlet with volt meter.
broken welds, etc.

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Larson Electronics, LLC Phone: (800) 369-6671 Fax: (903) 498-3364 www.larsonelectronics.com
PARTS
ITEM # DESCRIPTION
1 8” to 10” DUCT TRANSITION
2 INTAKE/DISCHARGE GUARD
3 FAN BLADE ASSEMBLY
4 INLET/OUTLET FLANGE GASKET
5 HANDLE
6 EXPLOSION PROOF MOTOR WITH 25 FT. SJOOW CORD (NO PLUG)
7 MOTOR SUPPORT BRACKET
8 RUBBER FOOT
9 GROUND LUG
10 RED POWDER-COATED STEEL HOUSING
11 STRAIN RELIEF
12 10-24 X 3-1/2” LONG THREADED STUD
13 ON/OFF SWITCH KNOB
14 FAN BLADE LOCK NUT