AIR SYSTEMS CVF-12AC Manual

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OPERATING INSTRUCTIONS AND REPLACEMENT PARTS
Models: CVF-12AC, CVF-12AC50
CVF12CAN15, CVF12CAN25
AIR SYSTEMS INTERNATIONAL, INC.
829 Juniper Crescent, Chesapeake, Va, 23320
Telephone [phone]
Toll Free 1-800-866-8100
Fax No. [phone]
www.airsystems.com.
e-mail: [email protected]
This manual must be read carefully and followed by all persons who have or will have the responsibility
for using or servicing this equipment. This equipment will perform as designed only if used according
to the instructions. Otherwise it could fail to perform as designed, causing personal injury or death.
WARNING

Typical Saddle Vent® Setup Procedure
Place fan or blower a minimum of
5 ft. (1.6m) from manhole opening
Blower or Fan
90° Elbow
Manhole
Opening
Manhole Lid
Universal Mount
Saddle Vent®
Select a blower or fan based on environmental
conditions and the size of the con ned space.
For information or guidance in selecting the
proper set-up, please contact Customer Service.
STEP 1) Install 6 ft. (1.8m) duct on blower or fan
STEP 2) Install 90° elbow on top of Saddle Vent®
STEP 3) Install duct on bottom 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
The Saddle Vent® is a registered trademark of Air Systems International, Inc.
The Conductive Saddle Vent® is covered by U.S. and Foreign Patents
WARNING: HAZARDOUS LOCATION OPERATIONS
Use an explosion-proof or intrinsically safe blower or fan,
conductive ducting, and The Conductive Saddle Vent® System.
Attach all grounding wires and assure a complete circuit to the
blower or fan in order to remove static charges.
The Saddle Vent® Ventilation System
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All ventilation procedures should comply with federal, state, and local regulations. Air quality should be tested prior to
ventilating a con ned space. A purge chart is provided on our website, www.airsystems.com, help assist in estimating the
approximate time needed to ventilate con ned spaces. Air quality should be tested continuously during con ned space
occupancy to ensure a stable atmosphere and worker safety because atmospheric conditions can change rapidly. Addi-
tional procedures and recommendations are available from federal, state, and local agencies. DO NOT operate these fan
unit in a vertical position or with the  ange or guards removed.
Note: If volatile or explosive vapors are suspected, use Air Systems’ explosion proof electric blower, Model No. SVB-
E8EXP, explosion proof in-line fan, Model No. SVF-10EXP, explosion proof contractors fan, Model No. CVF-8EXP or Air
Systems’ intrinsically safe pneumatic blower, Model No. SVB-A8.
Note: For con ned space ventilation in non-hazardous locations, use Air Systems’ con ned space ventilation kit, Model
SV-CUP. For hazardous locations use ventilation kit, Model SV-CUPCND along with one of the above explosion proof
blowers or fans.
SAFETY PRECAUTIONS
READ AND FOLLOW ALL INSTRUCTIONS BELOW
WARNING
Fan and blower models with the “EX” or “X” designation are the
only models approved for use in hazardous locations. These
models are NOT approved for use in mines.

MOTOR TYPE 1.0 HP (.75 kw) electric, 115 VAC, 60 Hz, 8.3 amps, Single Speed, 3450 RPM, Thermally
Protected, Max. Ambient Temperature: 122° Fahrenheit (50°Celcius)
OUTLET SIZE 12” Diameter (305mm)
FLOW RATES
Free Air: 1866 cfm (3170 cmh)
15 ft. duct with one 90° bend: 1497 cfm (2458 cmh)
15 ft. duct with two 90° bends: 1282 cfm (2178 cmh)
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1) Place fan in a clean fresh air environment. Do not operate this fan in the vertical position.
2) Air quality of the conned space should be tested prior to ventilation. If air quality of the conned space is
unacceptable, consult a trained professional.
3) Inspect fan for damaged or worn parts and ducting for air leaks prior to fan operation.
4) Install duct cuff to exhaust ange and secure. Keep bends and kinks in ducting to a minimum to maximimize
air ow. If canister model is used, secure canister with rubber connect straps, open lid and pull out ducting. Inspect
for air leaks.
5) Set fan upwind from the work location and a minimum of 5 ft. (1.5m) from the manhole opening.
6) Connect CVF-12AC to power source, 115 VAC / 60 Hz / 15 amp. Use only GFCI protected receptacles.
Connect CVF-12AC50 to power source, 220 VAC / 50 Hz / 15 amp.
7) Push ON/OFF switch to “I” position to start.
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive vibration
Air intake blocked Turn fan off and clear debris from intake.
Possible internal damage
Turn off and inspect fan blades, shaft, and housing
for debris, damage, and loose screws.
Note: Never run fan for extended periods without
installing duct on the exhaust  ange.
Possible external damage Turn fan off and inspect for loose guards, broken
welds, etc.
Circuit breaker trips Voltage output insuf cient Test outlet with volt meter.
Motor Overheated Once motor cools, it will restart automatically
1) Remove the rubber isolation feet and screws from the metal inserts.
2) Install a threaded stud (male/male thread) into the 4 metal inserts.
3) Afx the fan to a location that will allow nuts to be installed on the threaded studs.
4) Put a threaded nut on each stud and tighten. The fan is now stationary.
General Set-Up And Operation
To Convert The Ventilation Fan To A Stationary Ventilator
Follow The Steps Below:
Troubleshooting
Specications - Model: CVF-12AC
Specications - Model: CVF-12AC50
MOTOR TYPE 1.0 HP (.75 kw) electric, 220 VAC, 50 Hz, 6.9 amps, Single Speed, 2875 RPM, Thermally
Protected, Max. Ambient Temperature: 122° Fahrenheit (50°Celcius)
OUTLET SIZE 12” Diameter (305mm)
FLOW RATES
Free Air: 1555 cfm (2642 cmh)
15 ft. duct with one 90° bend: 1248 cfm (2120 cmh)
15 ft. duct with two 90° bends: 1068 cfm (1815 cmh)

ITEM # DESCRIPTION PART #
1 DISCHARGE GUARD CVF-FG12
2INTAKE GUARD CVF-RG12
3 DUCT CANISTER LATCHING POST CVF-POST
4 ON/OFF SWITCH CVF-SWITCH
5 POWER CORD ELCB013
6 DUCT CANISTER WITH 15’ OF DUCT CVFCAN1215
7 DUCT CANISTER WITH 25’ OF DUCT CVFCAN1225
8 115 VAC / 60Hz MOTOR MTR076CN
9 ELECTRICAL COMPARTMENT DRAIN HOLE N/A
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DRAIN PORT
DO NOT OBSTRUCT!
System Components - Model: CVF-12AC

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ITEM # DESCRIPTION PART #
1 DISCHARGE GUARD CVF-FG12
2INTAKE GUARD CVF-RG12
3 DUCT CANISTER LATCHING POST CVF-POST
4 ON/OFF SWITCH CVF-SWITCH
5 POWER CORD ELCB012EF
6 DUCT CANISTER WITH 15’ OF DUCT CVFCAN1215
7 DUCT CANISTER WITH 25’ OF DUCT CVFCAN1225
8 220 VAC / 50Hz MOTOR MTR076CN50
9 ELECTRICAL COMPARTMENT DRAIN HOLE N/A
System Components - Model: CVF-12AC50
DRAIN PORT
DO NOT OBSTRUCT!

ITEM # DESCRIPTION PART #
1 RUBBER LATCH CVF-RHOOK
2RUBBER LATCH SECURING HOOK CVF-UPOST
3 10-32 X 1” SCREW FS1032X100
4 10-32 X 1/2” SCREW FS1032X050
5 ORANGE DUCT CANISTER, NON-CONDUCTIVE CVFCAN12ND
6 ORANGE DUCT ADAPTER, NON-CONDUCTIVE CVF-CANA12
7 12” HOSE CLAMP SV-HC12
8 12” X 15’ NON-CONDUCTIVE DUCT SVH-1215
9 12” X 25’ NON-CONDUCTIVE DUCT SVH-1225
10 #10 STAINLESS STEEL FLATWASHER FW#10SS
11 ORANGE DUCT CANISTER LID, NON-CONDUCTIVE CVFCANL12
12 3/16” POP RIVET FR3/16XMAL
13 DUCT CANISTER LID STRAP CVF-BELT
14 10-32 NUT WITH NYLON INSERT FN1032ESN
15 PLASTIC LATCHING POST CVF-POST
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Replacement Parts - Non-Conductive Duct Canister
Model: CVF-CAN Series

Manual No. BLWR051
Rev. 2 September 2018
Air Systems’ manufactured equipment is warranted to the original user against defects in workmanship or materials under
normal use for one year from the date of purchase. Any part which is determined by Air Systems to be defective in mate-
rial or workmanship will be, as the exclusive remedy, repaired or replaced at Air Systems’ option. This warranty does not
apply to electrical systems or electronic components. Electrical parts are warranted, to the original user, for 90 days from
the date of sale. During the warranty period, electrical components will be repaired or replaced at Air Systems’ option.
NO OTHER WARRANTY, EXPRESSED OR IMPLIED, AS TO DESCRIPTION, QUALITY, MERCHANTABILITY, FIT-
NESS FOR A PARTICULAR PURPOSE, OR ANY OTHER MATTER IS GIVEN BY AIR SYSTEMS IN CONNECTION
HEREWITH. UNDER NO CIRCUMSTANCES SHALL THE SELLER BE LIABLE FOR LOSS OF PROFITS, ANY OTHER
DIRECT OR INDIRECT COSTS, EXPENSES, LOSSES, OR DAMAGES ARISING OUT OF DEFECTS IN, OR FAILURE
OF THE PRODUCT OR ANY PART THEREOF.
The purchaser shall be solely responsible for compliance with all applicable Federal, State and Local OSHA and/or MSHA
requirements. Although Air Systems International believes that its products, if operated and maintained as shipped from
the factory and in accordance with our “operations manual”, conform to OSHA and/or MSHA requirements, there are no
implied or expressed warranties of such compliance extending beyond the limited warranty described herein. Product
designs and speci cations are subject to change without notice. Rev. 2, 12/98
Air leaks are not covered under warranty except when they result from a defective system component, i.e. an on/off valve
or regulator or upon initial delivery due to poor workmanship. Air leaks due to poor delivery or damage will be covered un-
der delivery claims. Minor air leaks are part of routine service and maintenance and are the responsibility of the customer
just as are  lters and oil changes.
Warranty