- Unifire
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1. M MIAIRE USERS MANUAL CONFINED SPACE BLOWERS Read and understand all instructions before using this product Open carton carefully and inspect product for damage caused by carrier If any damage is found report and submit claim to carrier TABLE OF CONTENTS INTRODUCTION INTRODUCTION This manual provides instructions for the use and maintenance of Unifire Confined Space Blowers You must read and understand this manual and be trained in the proper use of the equipment before using it in a contaminated atmosphere There are many federal state and local codes and regulations governing sales construction installation and or use of products for certain purposes which may vary UNIFIRE cannot be responsible for how the products are used and installed Before purchase and use the buyer must review the product application and be sure that the product installation and use will comply with those regulations For more information and assistance on Unifire products contact Unifire Technical support toll free at 1 800 745 3282 or e mail at info unifireusa com DESCRIPTION Unifire Confined Space Blowers are designed to offer high output CFM in easy to use portable air over motor configurations They are available in outputs from 778 up to 5500 CFM of free air Unifire Confined Space blowers are available in a range of styles sizes and power Blowers are standard 115 VAC but are available in 230 volt SAFETY PRECAUTIONS DO NOT op2. operation in job site areas that are reasonably dry clean and provide for a continuous dynamic source of air for cooling the motor Any questions about operating environments contact the Unifire Technical Support at 1 800 745 3282 or e mail at info unifireusa com before using the blower WARNINGS AND LIMITATIONS Flow rate testing was performed by the Colorado Engineering Experiment Station Inc The Blowers were tested per AT amp T Standard EL2723 PL2709 in a chamber built in accordance with AMICA Standard 210 67 The test was performed with a single 8 inch 203mm diameter x 15 feet 7 6m flexible reinforced duct connected to the blower outlet The published flow rates are intended to serve only as a reference Manufacturing tolerances and specific operating parameters will affect the overall flow rate s for each particular blower Actual flow rate will decrease when the total length of the ducting is increased more than 15 feet 7 6m Actual flow rates may change if blower is used with ducts manufactured and or supplied by other sources CAUTION The final working procedure for any job application involving the use of the blower must be individually determined after careful analysis of all factors and or conditions present The nearest OSHA office is a valuable source for applicable information regarding the operation of the blower CAUTION Before using the blower check all applicable federal state industry and local regulation
3. FIRE INDUSTRIES freight prepaid with the RMA number marked clearly on the outside of the package UMOO4 Axibloman doc Rev D 09 05
4. O FO FO Se What is the main difference between the Axial and the Centrifugal blowers The Centrifugal Blowers have the motor on the outside of the housing The centrifugal design allows them to push against greater dynamic back pressure higher static pressure leading to higher CFM with extended lengths of ducting compared to axial blowers The Axial blowers have housed motors making them more compact portable and less expensive They offer higher CFM in a free air configuration Is it better to positively ventilate or to evacuate air Any Confined Space must be positively ventilated you may evacuate when fumes are being generated in a specific location E g welding grinding etc Can you place the Explosion Proof Blower in an Explosive Atmosphere Yes however the blower should be at least five feet away from the entrance in order to bring fresh air in and not just to recirculate the contaminated air It is recommended that the area is monitored Why do I need the explosion proof socket and plug with the explosion proof blower The receptacle included with your blower must be hard wired to your power source e g conduit flexible conduit to meet explosion proof standards If you modify any part of the blower cord plug and or receptacle you will void the explosion proof certification Why do I need to use statically conductive EX ducting with EX Blowers EX ducting is coated with Neoprene which resists static cha
5. ct the local service representative of the motor manufacturer for specific information TROUBLESHOOTING Electric Motor TROUBLE CAUSE WHAT TO DO Motor Fails to Start Motor Stalls Motor runs and then dies Motor does not come up to speed Motor takes too long to accelerate Wrong rotation overheats running Motor while under load after corrections Scraping noise Blown Fuses Replace fuses at least 125 of nameplate amperes Improper current supply Ensure that the power supplied agrees with motor nameplate and load factor Improper line connections Check connections with diagram supplied with Open circuit in winding or starting switch Indicated by humming sound when switch is closed Repulsion induction motors may spark at brushes Check for loose wiring connections also see if starting switch inside motor is closed Mechanical failure Ensure that motor and drive turn freely Check bearings and lubrication Short circuited stator Indicated by blown fuses Motor must be rewound Motor may be overloaded Reduce load Defective capacitor Overloaded motor Check for short circuit grounded or open capacitor replace if necessary Reduce load Low motor voltage See that nameplate voltage is maintained Open circuit Power failure Open primary circuit Excess loading Fuses blown check overload relay stator and reset buttons Check fo
6. e two blowers one to ventilate and another to extract air in the same space Yes when used with ducting will help concentrate the exchange of fresh air in a specific area of a given space but will not significantly increase the overall air exchange Will the blower output decrease if add additional ducting Yes the output will decrease with any addition of ducting or addition of bends in the ducting Are the reductions in output directly related to the length in ducting No there are several variables that will affect the total output of the blower The biggest drop in output will occur after the first addition of ducting thereafter the reductions are smaller The same holds true for the number of bends Why is my blower tripping the circuit breaker There are two situations that can cause this You need to make sure you have proper gete to your blower b che T our cl ircuit bre aker it Je b pipe amperage load th he vo ltage ont he panel and he be CNeck Tor condition a electrical cora ae extension cord as well as ext cord gauge and length me for proper fan operation ake sure the fan is not rubbin ainst the housin heck for foreign ey Rd tip Inside housing this might prevent fan from turning heck tor any rust on shaft or damaged fan blades Can convert my AC 115V powered blower into DC 12V powered blower No the motors can not be used for both applications or converted A power inverter may be us
7. ed to adapt an AC powered blower 115 VAC to your car s battery 12 VDC for power How do know that your EX Blower meets the Class Division and Group for my hazardous confined space All of our EX blowers are shipped with an approved Hazardous Location motor socket and receptacle Each blower is stamped with the approved class div and group They are also supplied with the appropriate anti spark fan WARRANTY Damage resulting from carrier handling abuse is not covered by product warranty Protect your interest inspect product immediately The following warranty information is made in lieu of all other warranties expressed implied or statutory including but not limited to the implied warranties of merchantability and fitness for purpose It is in lieu of any implied warranty of merchantability fitness for a particular purpose or other warranty of quality except of title and against patent infringement In the event any Unifire Industries Inc product is found to be defective in material workman ship or not in conformance with any expressed warranty for a specific purpose Unifire s only obligation and your exclusive remedy shall be to repair replace or refund the purchase price of such parts or products upon timely notification thereof and substantiation that the product has been stored maintained and used in accordance with Unifire s written instructions Maximum liability is in no case to exceed the value of the Unifire u
8. ental rupture breakage or unusual faulty operation TYPICAL CLASS II LOCATIONS Grain elevators flour and feed mills Plants that manufacture use or store magnesium or aluminum powders Plants that have chemical or metallurgical processes producers of plastics medicines and fireworks etc Producers of starch or candies Spice grinding plants sugar plants plants and cocoa plants Coal preparation plants and other carbon handling or processing areas CLASS III NEC 500 7 Those areas in which there are easily ignitable fibers or flyings present due to type of material being handled stored or processed GROUPS NEC 500 3 The gases and vapors of Class 1 locations are broken into four groups by the code A B C and D These materials are grouped according to the ignition temperature of the substance its explosion pressure and other flammable characteristics The dust locations of Class Il are designated E F and G These groups are classified according to the ignition temperature and the conductivity of the hazardous substance NOTE For detailed group descriptions refer to NEC 500 3 TYPICAL CLASS III LOCATIONS Textile mills cotton gins cottonseed mills and flax processing plants Any plant that shapes pulverizes or cuts wood and creates sawdust or flyings WARNING Explosion proof blowers MUST BE used with statically conductive ducting FREQUENTLY ASKED QUESTIONS oie F
9. erate blower until the operator completely comprehends the contents of this manual The blower is a specialized type of powered equipment designed for a specific job function and requires adequate and thorough instruction BEFORE it is operated Each person must receive adequate professional instruction regarding proper operation Read and understand this User Manual and the material supplied by the motor manufacturer Refer to OSHA 2207 for job safety and health rules and regulations 1926 and 1910 covering construction DO NOT allow minors to operate the blower Bystanders children and animals should not be allowed in the area where a blower is in use DO NOT use an undersized wire size on electrical power cable or extension cords if used This will adversely limit the starting and load carrying capabilities of the motor Always use minimum AWG wire sizes for motor branch circuits Consult the National Electric Code Tables Article 400 for specific information DO NOT operate the blower without the inlet and outlet screens properly secured and in place Replace screens with factory replacements OEM The screen grid must comply with current OSHA regulations regarding protective enclosures to prevent personal injury to the operator s Ensure that the structural integrity of the screens will allow them to serve their protective function Keep both screens free from obstructions and debris to allow maximum airflow DO NOT stand directly in fron
10. ety features are effective only if they are maintained in good working condition Keep the blower clean and properly serviced Heavy accumulations of dust and dirt will result in overheating and premature failure of the blower motor Clean the motor surfaces and all ventilation openings periodically e Always stop the motor and disconnect the power source to prevent the accidental starting and or the possibility of receiving an electrical shock working on the blower e Do not energize the electric motor with the shaft key exposed on the open shaft Personal injury can result from being struck by a shaft key thrown from the motor shaft DANGER Always stop the motor and disconnect the power source to prevent the accidental starting and or Do not attempt any maintenance or repair work not described in this Product Manual Electric Motor Maintenance e The electric motor is capable of operating for many years with minimum maintenance e Before attempting to service the motor disconnect the blower from the power supply e Clean the motor surfaces and ventilation openings periodically preferably with a vacuum cleaner Heavy accumulation of dirt and lint will result in overheating and premature failure of the motor e The electric motor is equipped with ball bearings and under normal service and ambient temperatures should not require re lubrication for 9 to 10 years If you feel that the motor requires re lubrication conta
11. location equipment may be required in any area where the presence of flammable gases vapors or finely pulverized dusts in the atmosphere is sufficient to create a threat of explosion or fire It may_also be required where easily ignitable fibers of flyings are present CLASS NEC 500 5 Those areas in which flammable gases or vapors may be present in the air in sufficient quantities to be explosive or ignitable DIVISION NEC 800 5 6 7 In the normal situation hazard would be expected to be present in everyday production operations or during frequent repair and maintenance activity TYPICAL CLASS LOCATIONS Petroleum refineries gasoline storage and dispensing areas Industrial firms that use flammable liquids in dip tanks for parts cleaning or other operations Petrochemical companies that manufacture chemicals from gas and oil Dry cleaning plants where vapors from cleaning fluids can be present Companies that have spraying areas where they coat product with paint or plastics Aircraft hangers and fuel servicing areas Utility gas plants and operations involving storage and handling or liquefied petroleum gas or natural gas CLASS II NEC 500 6 Those areas made hazardous by the presence of combustible dust DIVISION II NEC 500 5 6 7 In the abnormal situation material is expected to be confined within closed containers or closed systems and will be present only through accid
12. nd Power Selection 1 The voltage frequency and phase of the power supply must be consistent with the motor nameplate rating a The motor will operate satisfactorily on voltages within 10 of the nameplate value or frequency within 5 The combined variation must not exceed 10 2 The Unifire blowers are designed to operate from a grounded 115 VAC 60Hz or 220V 50Hz single phase power source B prlect models are available ina 220V 730 Z single phase configuration It is crucial to the performance of the blower that the proper power source is selected 3 Select blowers are supplied with a standard P5 15 plug or a twist lock NEMA plug excluding 220V 50Hz blowers a Do not change or alter the plug as this will affect the performance of the blower b Operation from an inadequate power source or use of incorrect electrical plug may result in property damage and or personal injury 4 To determine maximum length of extension cord when used with a blower refer to the National Electric Code Tables Article 400 MAINTENANCE Maintenance amp Repair e Use only genuine Unifire approved replacement parts for maintenance and repair Use of parts manufactured by others can result in property damage and or personal injury e Follow the service instructions as outlined in the Maintenance section of this Users Manual e Always properly maintain the blower Frequently check all fasteners and individual parts Built in saf
13. ngerous condition occurs The GFCI acts like a fast acting fuse or circuit breaker sensing small imbalances in the circuit caused by current leakage and shutting off electricity within 25mS milliseconds Use of a portable GFCI gives on the job protection from electrical shock hazards caused by ground faults in commercial industrial and residential applications For specific information consult the NEC publications and OSHA publications 210 22D for construction sites and 555 3 for marina s or for use around any area containing water DO know where the controls are how they operate and how to stop the blower in an emergency DO verify the location classification Certain job site locations may be classified as hazardous because of explosive concentrations of gas vapor or dust in the atmosphere The National Electric Code divides these locations into Classes and Groups according to the type of explosive agent For specific information consult the NEC Section 500 Use Unifire Explosion Proof Blowers for operation in an explosive or flammable atmosphere The use of any other blower not designed for use in a Hazardous Location may result in personal injury or death DO place the blower on secure footing to prevent it from shifting while in use Such movement can cause injury to the operator s or damage to the blower itself DO ensure blower is operated in a horizontal position to meet the enclosure definition The blower is designed for
14. nit involved LIMITATION OF LIABILITY Except as provided above Unifire Industries shall not be liable or responsible for any loss or damage whether direct indirect incidental special or consequential arising out of sale use or misuse of Unifire Power Blowers products or the user s inability to use such products Refer to this Users Manual for proper use Transportation charges in all cases will be at the customer s expense THE REMEDIES SET FORTH HEREIN ARE EXCLUSIVE FOR MORE INFORMATION AND ASSISTANCE ON UNIFIRE POWER BLOWERS CONTACT UNIFIRE TECHNICAL SERVICE TOLL FREE AT 1 800 745 3282 OR E MAIL INFO UNIFIREUSA COM RETURN POLICY NOTE THE FOLLOWING REQUIREMENTS MUST BE FOLLOWED IN RETURNING GOODS OR PRODUCTS TO UNIFIRE INDUSTRIES 1 UNIFIRE INDUSTRIES requires that you obtain a Return Merchandise Authorization Number RMA prior to returning merchandise to us This number can be obtained by calling Unifire Customer Service at 800 745 3282 or requesting it in writing NOTE Products returned to UNIFIRE without a Return Merchandise Authorization Number will not be accepted and or processed until one is acquired 2 Before returning the product decontaminate and clean it to remove any hazardous materials that may have settled on the product during use Products suspected of asbestos and or other dangerous contamination will be refused and returned freight collect 3 The products or components must be returned to UNI
15. oots with non slip soles Sneakers or other similar type shoes do not provide adequate protection DO wear an approved safety hard hat Noise generated by the blower may damage your hearing Wear sound barriers ear plugs or ear mufflers Continuous and regular operators should have their hearing checked regularly DO a visual inspection of the blower and check for damaged worn loose and or broken parts Ensure that all safety devices are operable and information decals are readable Check to see that the blower and all related accessories are in good mechanical condition before use DO verify that the blower uses appropriate electrical cord and NEMA plug Electrically driven blowers are designed to operate ONLY from a grounded 115 volt AC 60Hz or 220V 50Hz single phase power source Select models are available with 220V 50Hz All electrical wiring installations and connections must comply with all applicable NEC statutes and with all applicable local codes and practices Consult current National Electric Code publications for specific information DO ground the blower motor securely Ensure that the grounding wire and or device is properly grounding the motor Failure to properly ground the motor may cause an electrical shock and or electrocution resulting in personal injury or even death DO use a ground fault circuit interrupter GFCI A GFCI is a safety device that disconnects power from a circuit to a load when a potentially da
16. r loose connections to line to fuses and to control Locate fault with testing device and repair Reduce load Poor circuit Check for high resistance Applied voltage too low Wrong sequence of phases Overload Get power company to increase power tap Reverse connections at motor Reduce load Dirt build up insufficient ventilation Clean May have one phase open U Ensure that all leads are well connected Check for faulty leads connections Shorted stator coil Faulty connection Repair and then check wattmeter reading Indicated by high resistance High voltage Check terminals of motor with a voltmeter Low voltage Motor misaligned Check terminals of motor with voltmeter Realign Weak foundations Fan rubbing Strengthen tighten base Remove or clear interference Fan striking housing k Clear fan in ation STORAGE The proper procedure for long term storage of the blower will protect it against the effects of corrosion and damage If the blower is not to be operated for a period of 30 days or more proceed to store as follows 1 Clean all accumulated dirt and grease from the blower using an appropriate cleaner 2 Check parts for wear or damage Make the necessary repairs 3 Apply a light coat of dry film lubricant to the blower hub and shaft to prevent rust formation 4 Store the blower indoors If the blower must be stored outdoors pro
17. rge build up It also is integrated with a grounding wire to maintain the ground throughout your system Can use a blower to evacuate welding fumes Yes you can have ducting directed at the working area with the blower in the extracting configuration What s the maximum length of ducting No more than 100 feet Lengths longer than that might cause the blower to stall or overheat What is the maximum temperature the ducting can withstand The maximum working temperature for ducting is 150 F Can connect two pieces of ducting together Yes you can use the optional duct to duct connector P N 9500 01 8 or 9600 01 16 Can l use the 12 or 16 Blower with 8 ducting Yes use the optional Adaptor Reducer for 9515 use P N 9600 50 for 9515 01 use P N 9600 50EX for the 12 use P N 9509 03 It is NOT recommended for the 16 High Output blower 9516 Can you draw air with all Unifire blowers Yes You can relocate the flange on the 16 Axial blowers only recommended on the 9515 and 9515 01 not recommended for the 9516 You may install an optional inlet adapter on the 8 Axial blowers The centrifugal blowers have an inlet and an outlet port O Te Q A Ti How do choose the correct blower to ventilate an area You first need to determine the total volume cu ft of the space to be ventilated We recommend using a blower that is capable of 20 exchanges of air per hour Can us
18. s regarding the use of flame resistant and or self extinguishing duct materials for the intended job applications It is the responsibility of the owner s and or operator s to determine that the duct material in use for the job application meets all applicable fire code and OSHA requirements DANGER Always stop the motor and disconnect the power source to prevent accidental starting and or the possibility of receiving an electrical shock DANGER Never enter a manhole or confined work area until it has been determined to be safe for entry and tested with appropriate gas detection equipment and ventilated for a minimum of five 5 minutes with the blower at maximum speed OPERATION Use of Duct 1 Operate the blower upwind from the work location and with the air inlet facing into the relative wind to maximize airflow 2 The Unifire flexible ducts are for use with Unifire blowers All arg of the collapsible reinforced design Each duct is supp with a nylon strap t secure each end to the blower and or a duct connector l a a G hen using statically conductive ducting the integrated grounding wire must be ly Grounded to the blower chassis Linked to any additional grounding wire or duct used 3 It is recommended that the total length of duct does not exceed 100 feet 4 To join two sections of duct use a duct to duct connector 5 Pull duct sleeve over the outlet port at least six 6 inches and secure the duct
19. t of and or face the blower outlet Personal injury may result from debris being thrown from the blower fan at relatively high velocity DO implement an operational safety program for this blower to include but not limited to instructional requirements for operation applicable OSHA requirements local laws and regulations job site safety and blower maintenance Operators must be fully instructed regarding the specifics of this safety program Ref 29CFR 1926 21 b 2 DO ensure that the blower is in its original factory configuration and has not been modified Any modifications may result in potentially dangerous configurations that can lead to property damage and or personal injury As well as voiding the manufacturer s warranty DO ensure that operator s are in adequate physical condition mental health and not under the influence of any substance drugs alcohol etc which might impair vision dexterity or judgment If you have any condition that might be aggravated by strenuous work check with your doctor before operating the blower Guard against the possibility of back related injuries Always use proper lifting techniques when moving or carrying blower DO wear sturdy and snug fitting clothing Never wear loose fitting clothing or anything that could become caught on controls or moving parts Wear long pants to protect your legs To improve your grip and protect your hands wear heavy duty non slip gloves Wear steel toed safety b
20. tect it from the elements with a suitable enclosure or storage CONFINED SPACE APPLICATIONS DANGER Refer to local and federal OSHA Confined Space Laws and Regulations CAUTION The final working procedure for any job application involving the use of the blower must be individually determined after careful analysis of all factors and or conditions present The nearest OSHA office is a valuable source for applicable information regarding the field use of the blower Hazardous Location Requirements All Explosion Proof Blowers must be used with the Hazardous Location Plug and Socket Only statically Conductive Ducting may be used with Explosion Proof Blowers The Unifire Explosion proof blowers are rated to be used in the following hazardous locations Verify your location classification Blower 9513 05 9514 05 9514 06 9509 07 9515 01 lass OUD C amp D EF ti ESE ai e Ensure the blower design meets the hazardous class and group classifications of job site e The National Electric Code divides these locations into Classes and Groups according to the type of explosive gas agent which may be present e For specific information on Hazardous Location requirements consult the National Electric Code Section 500 through 517 or a qualified electrician e The Hazardous Location plug and receptacle must be used and properly wired using a conduit system to the power source CAUTION Hazardous
21. to the blower with the nylon clamping strap and tighten securely 6 For exhaust air blowing operations connect the duct to the blower outlet a The duct can be one of two types Collapsible non reinforced Collapsible flexible reinforced 7 For extraction air evacuation operations connect the duct to the blower inlet a The duct must be of the reinforced type to prevent the vacuum force generated by the lower s suction from collapsing th ct b For the om Pax ia sa T Axial biyen duct can be secured on either side of l CE Bon tre 8 Axial blowers an optional inlet adapter P N 9500 03 must be used Remove the inlet griit i Attach the inlet adapter and secure d For the 16 Standard and 16 Explosion Proof Axial blower l Remove the ring flange from the exhaust and relocate to the inlet side and i secure You may purchase an additional ring flange for dual extraction ventilation use Part No s needed are e 9515 03R Ring adapter lea e 9800 68 Machine screw3ea e 9500 63 Washer 3ea DANGER Before using the blower check all applicable federal state industry and local regulations regarding the use of flame resistant and or self extinguishing duct materials for the intended job applications It is the responsibility of the owner s and or operator s to determine that the duct material in use for the job application meets all applicable fire code and OSHA requirements OPERATION Voltage a
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