Heaters for the Harshest EnvironmentsHeaters for the Harshest Environments
Owner’s Manual
EFX
Explosion-Proof
Exhaust Fan
ISO 9001
This manual covers installations, maintenance, repair and replacement parts.
WARNING!
READ ALL IMPORTANT NOTICES ON PAGE 3.
PLEASE ADHERE TO INSTRUCTIONS PUBLISHED IN THIS MANUAL.
Failure to do so may be dangerous and may void certain provisions of your warranty.
Ruffneck™ is a key brand of CCI Thermal Technologies Inc.
Part No. 10356.Rev.1.02
Copyright © 2013. All rights reserved.
Printed in Canada
FAN MAINTENANCE CHECKLIST
For Explosion-Proof Exhaust Fan
WARNING
Fan should only be serviced by qualified personnel with HVAC equipment experience.
Disconnect fan from power supply before servicing fan. Lock the switch in the “OFF”
(open) position and/or tag the switch to prevent unexpected power application.
PERIODIC (before and as required during heating season)
1. CLEAN Fan
Fan Guard
Motor
Backdraft Dampers
Stormhood
2. CHECK Motor for smooth, quiet operation
Dampers for proper angle and tightness
Remove dust using compressed air. Do not spray with water or solvents.
ANNUAL (before heating season)
1. ELECTRICAL
Check all terminal connections and conductors. Tighten loose connections. Conductors with damaged
insulation must be replaced.
2. MECHANICAL
Check motor shaft bearing play. Replace motor if play is excessive or motor does not run quietly and
smoothly. Motor bearings are permanently lubricated.
Check fan. Replace immediately if cracked or damaged.
Check the tightness of all hardware. All nuts and bolts, including mounting hardware, must be tight.
TURN FAN ON FOR A MINIMUM OF 15 MINUTES. Check for air exiting fan through dampers and
smooth running of fan motor.
Heaters for the Harshest Environments
For assistance, please call
Toll Free: 1-800-661-8529 (24 hrs)
U.S. & Canada
- 2 -
IMPORTANT NOTICES
WARNING:
Read and adhere to the following. Failure to do so may result in severe or fatal injury.
1. Read and follow the instructions in this manual.
2. Fan(s) are to be installed and serviced only
by qualified personnel experienced in electrical and
HVAC work.
3. Installation and wiring of the fan must
adhere to all applicable codes.
4. It is essential that any fan, that will be used
in a hazardous (classified) location, is equipped with
an electric motor approved for such service.
5. Do not operate fan in atmospheres which are
corrosive to steel or aluminum, unless it has been
coated with a factory approved protective coating.
WARRANTY W I LL B E V OID
I F INSTR U C TIONS ARE NO T F O L LOW E D
6. Fan must be kept clean. When operating in
a dirty environment, regularly clean fan and
fan guard. Follow the recommended
maintenance procedures. Refer to the “Fan
Maintenance Checklist” section for details.
7. Use factory approved replacement parts only.
8. If there are any questions or concerns regarding
the fan, contact the factory. Refer to the last
page of this manual for details.
INSTALLATION
The installation instructions provide a general guideline for the installation and wiring of the exhaust fan.
All applicable codes must be adhered to.
LOCATION
1. For optimum air exhaust, the fan(s) should be
installed as follows:
a. There are no obstructions that may impede
the fans air inlet or discharge.
b. The air discharge is directed away from
building.
c. The air discharge is not directed at a
thermostat.
d. For warehouses or large workshops it may
be acceptable to use fewer, larger fans.
2. This unit can exhaust warm or cool air depending
on customer conditions. Be aware of problems
each can produce.
MOUNTING
1. The Exhaust Fan is designed to be installed in an
upright and level position.
2. Fan(s) are designed to be mounted from the rear
using four 3/8” holes. For fan dimensions,
see Figure 2.
3. The mounting structure must be strong enough to:
a. Support the fans weight
(refer to the specification section).
b. Provide sufficient stiffness to prevent
excessive vibration.
c. Withstand abusive situations such as
transportable installations.
d. If Exhaust Fan is installed on a wall thinner
than 4”, customer will need to install shims to
bring face of fan away from mounting
surface.
- 3 -
G
D
F
B
CDCDCDC
A
AIR FLOW
E
MOUNTING CLEARANCES
1. Leave at least 20” (500mm) clearance between
the rear of the motor and the nearest obstruction.
2. Clearance equal to the height of the fan shroud
above, or beneath is required for easy fan or
motor replacement.
TEMPERATURE CONTROL
1. If required, the fan output may be thermostatically
controlled by a remotely mounted thermostat.
DIMENSION
A
B
C
D
E
F
G
* This dimension is the minimum square opening si
EFX-12 EFX-16 EFX-20 EFX-24 EFX-30
392.1 377.8 409.6 393.7 396.9
mm
mm
mm
mm
mm
mm
mm
15.4 14.9 16.1 15.5 15.6
in
461.9 588 687.9 787.9 942.3
18.2 23.2 27.1 31 37.1
in
410 512.5 614.5 714.5 862.5
16.1 20.2 24.2 28.1 34
in
79.4 57.2 91.7 76.2 88.9
3.1 2.2 3.6 3 3.5
in
373.3 475.6 577.3 677.3 835.3*
14.7 18.7 22.7 24.7 32.9
in
411.1 537.2 637.1 737.1 891.5
16.2 21.2 25.1 29 35.1
in
359.2 461.7 563.7 663.7 811.7
14.1 18.2 22.2 26.1 32
in
ze
FIGURE 2
FINAL INSPECTION
1. Before application of electrical power:
a. Check that all connections are secured and
comply with the applicable wiring diagram
and code requirements
b. Confirm the power supply is compatible with
the data plate rotating on motor.
c. Remove any foreign objects from fan.
d. Ensure all electrical covers are well secured.
e. Ensure the fan rotates freely
counterclockwise when viewed from the rear
of the fan and air exits through the dampers.
- 4 -
EFX - 12 A
-
1 A
VOLTS PHASE HERTZ
A 115 1 60
B 208 1 60
C 208 3 60
D 230 1 60
E 230 3 60
F 460 1 60
G 460 3 60
H 575 3 60
I 220 1 50
J 380 3 50
K 440 3 50
1
2
3 WASHDOWN
4 WASHDOWN STAINLESS STEEL
5
A
B
12
16
20
24
EFX
MOTOR ELECTRICAL SPECS
MOTOR ENCLOSURE
TOTALLY ENCLOSED
SPECIAL MOTOR
CABINET MATERIAL
EPOXY POWDER COATED CARBON STEEL
HERESITE PHENOLIC COATED CARBON STEEL
EXHAUST FAN
EXHAUST FAN MODEL
16" DIA
20" DIA
24" DIA
30" DIA
X-PROOF, GR C, D, E, F & G
STAINLESS STEEL
FAN SIZE
12" DIA
EFX Explosion-Proof Exhaust Fan
Model Coding
BASE
MODEL
FAN
SIZE
CABINET
MATERIAL
MOTOR
,
Only available for Class I Group D, Class II Group F & G.
Consult factory for motor availability.
C
30
- 5 -
REPAIR & REPLACEMENT
W ARNING
Fan should only be serviced by qualified
personnel with HVAC equipment
experience.
Disconnect fan from power supply before
servicing fan. Lock the switch in the “OFF”
(open) position and/or tag the switch to
prevent unexpected power application.
1. After repairing any component:
a. Check that electrical connections are correct and
secure.
b. Remove any foreign material from enclosures.
c. Install and secure all covers.
d. Ensure that all fasteners are tight.
e. Remove all foreign objects from fan.
f. Ensure air exits through dampers and fan rotates
counterclockwise when viewed from rear of fan
(see Figure 8).
MOTOR, FAN, AND
FAN GUARD
1. Remove the (8) screws and washers that are holding the fan
grills to the shroud (see Figure 9).
2. Remove the (4) bolts and nuts that are holding the motor to
the motor mount (see Figure 10).
3. Remove the motor, fan and grills from the frame by lifting the
motor (see Figure 11).
4. Before removing the fan, measure and record the location of
the fan hub on the motor shaft (see Figure 12). If fan is difficult
to remove, use a gear puller on the fan hub.
5. To reassemble, place grills with grill clips onto motor (see
Figure 12) then position fan on motor shaft and tighten set
screws.
6. Place motor assembly onto motor mount and fasten the fan
guard to cabinet.
7. Center fan in shroud opening. Leave approximately 1/16” to
3/16” (1.6 to 4.8mm) gap between the motor and fan guard.
(see Figure 13).
8. Bolt motor to motor mount. Manually spin the fan blade to
ensure it rotates freely before applying power.
9. Air must exit through dampers and fan must rotate counter
clockwise when viewing from the rear of the fan
(see Figure 9).
Fan Locking
Bolt
Grill Screws (8)
Motor Bolts
(2 on each side)
FIGURE 10FIGURE 9
FIGURE 11
Air
Intake
Mounting Holes
(on top and bottom)
Fan
rotation
Support back
of motor
FIGURE 8
- 6 -
FIGURE 12
1/16” to 3/16”
(1.6 to 4.8 mm)
FIGURE 13
PARTS LIST
ITEM EFX-12 EFX-16 EFX-20 EFX-24 EFX-30 DESCRIPTION QTY.
17
5448 1378 1382 1389 1386 Fan 1
3257
1521
1518
*
3382
1517
1456
10204
3789
3788
1176
9671
3258
3
17
15
4
13
12
14
1
4
6
2
5
14
12
16
9
8
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
10192 10193 10194 10195 10196 Panel, Shroud 1
Motor 1
5456 5457 5458 5459 5460 Fan Guard 2
Grill Connector 2
3785 3786 3787 5433 9639 Channel, Motor Mount 1
Label Ruffneck 1
9638 Bracket, Motor Mount, Right 1
9637 Bracket, Motor Mount, Left 1
Label EFX 1
Washer #10 SAE Flat 8
Screw, 10-24, 5/8"Lg, Cutting 8
Bolt, 5/16 NC, 3/4" Lg 8
Washer 5/16 SAE 4
Nut, 5/16 NC Hex Flange Locking 12
Bolt, 5/16 -18 UNC x 3/4"Lg 4
1/8 2
Rivet
10
11
*
Provide motor voltage, phase, horsepower and service classification when ordering replacement motor.
- 7 -
GENERAL SPECIFICATIONS
Hazardous Location
Classifications
Class I, Div 1&2, Groups C,D
Class II, Div 1&2, Groups E,F,G
Temperature Code: T3B 165 C (329 F)
o
o
Approvals Motors are CSA approved and/or UL listed.
Fan
Aluminum blade. Steel spider and hub with 5/8 in. (15.875mm) bore.
Optional Heresite coating for corrosive atmospheres.
Fan Guard Split design with close wire spacing, meets OSHA requirements.
Motors
CSA approved and/or UL listed permanently lubricated ball bearing type with
rigid base.
Explosion-proof or totally enclosed construction.
All standard voltages for 60 and 50 hertz are available.
Frame Material 16ga. (0.060 in. or 1.52mm) epoxy-coated steel.
Optional stainless steel or Heresite coating for corrosive atmospheres.
Mounting Four 3/8 in. (9.5mm) diameter holes.
Must be mounted to a rigid structure.
Model EFX12 EFX20 EFX16 EFX24 EFX30
Fan Diameter
12 in.
(305mm)
16 in.
(406mm)
20 in.
(508mm)
24 in.
(610mm)
30 in.
(762mm)
Motor*
Air Flow Rating
o
@70 F (21 C)
o
Motor Speed
Net Weight
Shipping Weight
Dimensions
Width
Height
1/2 HP, 60Hz
(0.373kW)
850 CFM
(1444 m
1725 RPM
48.0 lbs.
(21.8 kg)
56.0 lbs.
(25.4 kg)
(410mm)
(462mm)
Depth
(392mm)
*Note: 50Hz units also available
3
16.1 in.
18.2 in.
15.4 in.
/hr.)
1/2 HP, 60Hz
(0.373kW)
1825 CFM
(3101m3/hr.)
1725 RPM
52.0 lbs.
(23.6 kg)
62.0 lbs.
(28.1 kg)
20.2 in.
(513mm)
23.1 in.
(588mm)
14.9 in.
(378mm)
1/2 HP, 60Hz
(0.373kW)
3760 CFM
(6388 m3/hr.)
1725 RPM
56.0 lbs.
(25.4 kg)
68.0 lbs.
(30.8 kg)
24.2 in.
(615mm)
27.1 in.
(688mm)
16.1 in.
(410mm)
1/2 HP, 60Hz
(0.373kW)
4180 CFM
(7102 m3/hr.)
1725 RPM
61.0 lbs.
(27.7 kg)
81.0 lbs.
(36.7 kg)
28.1 in.
(715mm)
31.0 in.
(788mm)
15.5 in.
(394mm)
3/4 HP, 60Hz
(0.560kW)
4759 CFM
(8086 m3/hr.)
1140 RPM
67.0 lbs.
(30.4 kg)
87.0 lbs.
(39.5 kg)
34.0 in.
(863mm)
37.1 in.
(942mm)
15.6 in.
(397mm)
- 8 -
NOTES
NOTES
NOTES
5918 Roper Road, Edmonton, Alberta, Canada T6B 3E1
Phone: (780) 466-3178 Fax: (780) 468-5904
PLEASE ADHERE TO INSTRUCTIONS PUBLISHED IN THIS MANUAL.
Failure to do so may be dangerous and may void certain provisions of your warranty.
For further assistance, please call:
24 Hr. Hotline: 1-800-661-8529
(U.S.A. and Canada)
Please have model and serial numbers available before calling.
WARRANTY: Under normal use the Company
warrants to the purchaser that defects in material or
workmanship will be repaired or replaced
without charge for a period of 18 months from
date of shipment, or 12 months from the start date of
product was purchased for authorized repair or
replacement within the terms of this warranty.
Subject to State or Provincial law to the contrary, the
Company will not be responsible for any expense for
installation, removal from service, transportation, or
damages of any type whatsoever, including damages
arising from lack of use, business interruptions, or
incidental or consequential damages.
The Company cannot anticipate or control the
conditions of product usage and therefore
accepts no responsibility for the safe application and
suitability of its products when used alone or in
combination with other products. Tests for the safe
application and suitability of the products are the sole
responsibility of the user.
This warranty will be void if, in the judgment of the
Company, the damage, failure or defect is the result of:
• vibration, radiation, erosion, corrosion, process
contamination, abnormal process conditions,
temperature and pressures, unusual surges or
pulsation, fouling, ordinary wear and tear, lack of
maintenance, incorrectly applied utilities such as
voltage, air, gas, water, and others or any
combination of the aforementioned causes not
• any act or omission by the Purchaser, its agents,
servants or independent contractors which for
greater certainty, but not so as to limit the generality
of the foregoing, includes physical, chemical or
mechanical abuse, accident, improper
installation of the product, improper storage and
handling of the product, improper application or the
misalignment of parts.
manufacturing defects apparent within 30 days from
the date of installation.
The Company neither assumes nor
authorizes any person to assume for it any other
obligation or liability in connection with the product(s).
The Purchaser agrees that all warranty work required
after the initial commissioning of the product will be
provided only if the Company has been paid by the
Purchaser in full accordance with the terms and
conditions of the contract.
The Purchaser agrees that the Company makes
no warranty or guarantee, express, implied or
statutory, (INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR WARRANTY OF FITNESS
FOR A PARTICULAR PURPOSE) written or oral, of
the Article or incidental labour, except as is expressed
or contained in the agreement herein.
LIABILITY: Technical data contained in the catalog or
on the website is subject to change without notice. The
Company reserves the right to make dimensional and
other design changes as required. The Purchaser
acknowledges the Company shall not be obligated
to modify those articles manufactured before the
formulation of the changes in design or improvements
of the products by the Company.
The Company shall not be liable to compensate or
indemnify the Purchaser, end user or any other party
against any actions, claims, liabilities, injury, loss, loss
of use, loss of business, damages, indirect or conse-
es (including legal expenses), costs, obligations and
causes of action of any kind arising wholly or partly
from negligence or omission of the user or the misuse, incorrect application, unsafe application, incorrect storage and handling, incorrect installation, lack
of maintenance, improper maintenance or improper
operation of products furnished by the Company.
Edmonton
1-800-661-8529
(780) 466-3178
F 780-468-5904
Oakville
1-800-410-3131
(905) 829-4422
F 905-829-4430
Orillia
1-877-325-3473
(705) 325-3473
F 705-325-2106
Greensburg
1-800-473-2402
(812) 663-4141
F 812-663-4202
Houston
1-855-219-2101
(281) 506-2310
F 281-506-2316
Denver
1-855-244-3128
(303) 979-7339
F 303-979-7350
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