Ruffneck EFX User manual

Owner’s Manual
Ruffneck
™is a key brand of CCI Thermal Technologies Inc.
Copyright © 2015. All rights reserved.
Part No. 10356.Rev.2.01 Printed in Canada
WARNING!
READ ALL IMPORTANT NOTICES ON PAGE 3.
PLEASE ADHERE TOINSTRUCTIONS PUBLISHED IN THIS MANUAL.
Failure to do so may be dangerous and may void certain provisions of your warranty.
This manual covers installations, maintenance, repair and replacement parts.
Explosion-Proof
Exhaust Fan
EFX
Heaters for the Harshest EnvironmentsHeaters for the Harshest Environments
ISO 9001

- 2 -
For assistance, please call
Toll Free: 1-800-661-8529 (24 hrs)
U.S. & Canada
FAN MAINTENANCE CHECKLIST
For Explosion-Proof Exhaust Fan
PERIODIC (before and as required during heating season)
Remove dust using compressed air. Do not spray with water or solvents.
ANNUAL (before heating season)
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.
1. CLEAN Fan
Fan Guard
Motor
Backdraft Dampers
Stormhood
2. CHECK Motor for smooth, quiet operation
Dampers for proper angle and tightness
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

WARRANTY W I LL B E VOID
I F INSTR U C TIONS ARE NOT FOLLOW E D
INSTALLATION
The installation instructions provide a general guideline for the installation and wiring of the exhaust fan.
All applicable codes must be adhered to.
IMPORTANT NOTICES
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.
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.
WARNING:
Read and adhere to the following. Failure to do so may result in severe or fatal injury.
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.
3. For installation within a Hazardous Location,
cable entries and coduit should be suitable for
operations in hazardous locations and rated IP 54.
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-
Heater is to be used only in atmospheres having
an ignition temperature higher than the heater’s
maximum rated operating temperature as shown
on the heater data plate. Refer to applicable
electrical codes for additional information.
Installer to provide certified Ex “d” sealing
fittings and stopping boxes for the same gas
groups as the apparatus.
9.
10.

FIGURE 2
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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.
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.
BF
G
A
E
AIR FLOW
C
D
C
D
C
D
C
D
EFX-12 EFX-16 EFX-20 EFX-24 EFX-30
mm 392.1 377.8 409.6 393.7 396.9
in 15.4 14.9 16.1 15.5 15.6
mm 461.9 588 687.9 787.9 942.3
in 18.2 23.2 27.1 31 37.1
mm 410 512.5 614.5 714.5 862.5
in 16.1 20.2 24.2 28.1 34
mm 79.4 57.2 91.7 76.2 88.9
in 3.1 2.2 3.6 3 3.5
mm 373.3 475.6 577.3 677.3 835.3*
in 14.7 18.7 22.7 24.7 32.9
mm 411.1 537.2 637.1 737.1 891.5
in 16.2 21.2 25.1 29 35.1
mm 359.2 461.7 563.7 663.7 811.7
in 14.1 18.2 22.2 26.1 32
* This dimension is the minimum square opening size
E
F
G
DIMENSION
A
B
C
D

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BASE
MODEL
FAN
SIZE
CABINET
MATERIAL
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
C
12
16
20
24
30
EFX
MOTOR
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
Only available for Class I Group D, Class II Group F & G.
,





Consult factory for motor availability.

REPAIR & REPLACEMENT
WARNING
- 6 -
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).
FIGURE 11
FIGURE 8
Fan
rotation
Mounting Holes
(on top and bottom)
Air
Intake
Support back
of motor
FIGURE 12
Fan Locking
Bolt
FIGURE 10FIGURE 9
Motor Bolts
(2 on each side)
Grill Screws (8)
1/16” to 3/16”
(1.6 to 4.8 mm)
FIGURE 13

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PARTS LIST
ITEM EFX-12 EFX-16 EFX-20 EFX-24 EFX-30 DESCRIPTION QTY.
110192 10193 10194 10195 10196 Panel, Shroud 1
2Motor 1
35456 5457 5458 5459 5460 Fan Guard 2
4Grill Connector 2
53785 3786 3787 5433 9639 Channel, Motor Mount 1
6Label Ruffneck 1
79638 Bracket, Motor Mount, Right 1
89637 Bracket, Motor Mount, Left 1
9Label EFX 1
10 Washer #10 SAE Flat 8
11 Screw, 10-24, 5/8"Lg, Cutting 8
12 Bolt, 5/16 NC, 3/4" Lg 8
13 Washer 5/16 SAE 4
14 Nut, 5/16 NC Hex Flange Locking 12
15 Bolt, 5/16 -18 UNC x 3/4"Lg 4
16 Rivet 1/8 2
17 11284 1378 1382 1389 1386 Fan 1
* Provide motor voltage, phase, horsepower and service classification when ordering replacement motor.
3257
1521
1518
*
3382
1517
1456
10204
3789
3788
1176
9671
3258
15
13
9
7
17
1
6
2
10
11
12
14
14
5
12
16
8
3
4
4

GENERAL SPECIFICATIONS
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*Note: 50Hz units also available
Approvals Motors are CSA approved and/or UL listed.
Fan Guard Split design with close wire spacing, meets OSHA requirements.
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.
Motors
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.
Aluminum blade. Steel spider and hub with 5/8 in. (15.875mm) bore.
Optional Heresite coating for corrosive atmospheres.
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)
EAC
IEx d IIB T3 GbX
oo
Fan
Model EFX12 EFX20EFX16 EFX24 EFX30
Fan Diameter
Motor*
Air Flow Rating
@70 F (21 C)
Motor Speed
Net Weight
Shipping Weight
Dimensions
Width
Height
Depth
oo
850 CFM
(1444 m3/hr.)
1825 CFM
(3101m3/hr.)
3760 CFM
(6388 m3/hr.)
4180 CFM
(7102 m3/hr.)
12 in.
(305mm)
1/2 HP, 60Hz
(0.373kW)
1725 RPM
48.0 lbs.
(21.8 kg)
56.0 lbs.
(25.4 kg)
16.1 in.
(410mm)
18.2 in.
(462mm)
15.4 in.
(392mm)
16 in.
(406mm)
1/2 HP, 60Hz
(0.373kW)
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)
20 in.
(508mm)
1/2 HP, 60Hz
(0.373kW)
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)
24 in.
(610mm)
1/2 HP, 60Hz
(0.373kW)
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)
30 in.
(762mm)
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)
Ambient Temperature -20°C (4°F) to 40°C (104°F)

NOTES

NOTES