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****** Page 1 ****** *ACCUREX Document 475564 Model XRAE and XRAS Axial Exhaust and Supply Fans Installation, Operation and Maintenance Manual Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage. General Safety Information When Installing or Servicing the Fan Do not depend on any switch as the sole means of disconnecting power when installing or servicing the fan. Always disconnect, lock and tag power source before installing or servicing. Failure to disconnect power source can result in fire, shock, or serious injury. Motor will restart without warning after thermal protector trips. Do not touch operating motor, it may be hot enough to cause injury. Do not place any body parts or objects in fan, motor openings, or drives while motor is connected to power source. Do not use this equipment in explosive atmospheres! 1. Read and follow all instructions and cautionary markings. Make sure electrical power source conforms to requirements of equipment and local codes. 2. Ventilators should be assembled, installed and serviced by a qualified technician. Have all electrical work performed by a qualified electrician. 3. Follow all local electrical and safety codes in the United States and Canada, as well as the National Electrical Code (NEC), the Occupational Safety and Health Act (OSHA), and the National Fire Protection Association (NFPA) Bulletin 96 in the United States. Ground motor in accordance with NEC Article 250 (grounding). Follow the Canadian Electrical Code (CEC) in Canada. 4. Motor and fan must be securely grounded (bare metal) to a suitable electric ground, such as a grounded water pipe or ground wire system. In United States, to reduce the risk of injury to persons, OSHA complying guards are required when fan is installed within 7 feet of floor or working level. In Canada, to reduce the risk of injury to persons, CSA complying guards are required when fan is installed below 2.5 meters (8.2 feet) above floor or grade level. 1. Do not kink power cable or allow it to come in contact with sharp objects, oil, grease, hot surfaces or chemicals. Replace damaged cords immediately. 2. Make certain that the power source conforms to the requirements for the equipment. 3. Never open access door to a duct with the ventilator running. 4. Motor must be securely and adequately grounded. This can be accomplished by wiring with a grounded, metal-clad race way system by using a separate ground wire connected to the bare metal of the motor frame or other suitable means. Pre-Starting Checks 1. Inspect for any damage that may have occurred during transit. 2. Shipping damage claim must be filed with carrier. 3. Check all bolts, screws, setscrews, etc. for looseness that may have occurred during transit. Retighten as required. Rotate propeller by hand to be sure it turns freely. Installation Installation, troubleshooting and parts replacement is to be performed only by a qualified personnel. Consult and follow applicable building codes which will supercede this document. NOTE: Refer to motor nameplate for wiring procedures. Refer to switch manufacturer for installation and wiring procedures. Cut an appropriate sized hole in the roof surface. Follow 1. curb manufacturer’s installation instructions. Caulk and flash curb to ensure a watertight seal. Install optional backdraft damper. Secure damper flange 2. to curb damper tray with fasteners provided. Remove motor cover. 3. Place ventilator on curb. 4. Secure ventilator to roof curb using a minimum of eight 5. fasteners. Check ventilator propeller for free rotation. 6. Check all fasteners for tightness. 7. Mount and wire safety disconnect switch under ventilator 8. cover and wire motor per wiring diagram on motor. Replace motor cover. 9. 10. Wire control switches at ground level. Optional Disconnect 8 in. or 12 in. 1.25 in. 0.75 in. Wiring by Others Recommended Duct and Damper Size Recommended Opening Axial Exhaust and Supply Fans

****** Page 2 ****** Operation 1. Before starting up or operating, check all fasteners for tightness. In particular, check set screws in propeller hub. While in the OFF position, or before connecting the ventilator to power, turn the fan propeller by hand to be sure it is not striking the venturi or any obstacle. 2. Start the ventilator up and shut it off immediately to check rotation of the propeller with directional arrow in the motor compartment. Ventilator propeller should rotate counterclockwise on all models when viewed from the top and clockwise for size 10 only. 3. When the ventilator is started, observe the operation and check for any unusual noises. 4. With the system in full operation and all ductwork attached, measure current input to the motor and compare with the nameplate rating to determine if the motor is operating under safe load conditions. Parts List Motor Shroud Windband Propeller Isolator Kit Motor Cover Conduit Curb Cap/Venturi I CorrectiveAction Replace or repair motor Replace or repair Shut power OFF and check wiring for proper connections Clean or replace Check for correct drives Inspect/repair damper 5. Keep inlets and approaches to ventilator clean and free from obstruction. Maintenance Disconnect and lockout power source before servicing. Uneven cleaning of the propeller will produce an out-of-balance condition that will cause vibration in the ventilator. 1. Keep inlets and approaches to ventilator clean and free from obstruction. Depending on the usage and severity of the contaminated air, a regularly scheduled inspection for cleaning the fan propeller, ventilator, and surrounding areas should be established. 2. Check for unusual noises when fan is running. 3. Periodically inspect and tighten setscrews. 4. Follow motor manufacturer’s instructions for motor lubrication. Our Commitment Troubleshooting Problem I Cause Blown fuse or breaker Ventilator Defective motor Inoperative Incorrectly wired Blocked duct or clogged filters Speed too slow Damper closed Insufficient Airflow Excessive Noise or Vibration Motor Incorrect propeller rotation Loose fitting duct sections Loose propeller Accumulation of material on propeller Ventilator base not securely anchored Motor hood loose and rattling Fan propeller out of balance Propeller RPM too high Shorted motor winding Overloads or Incorrect propeller rotation Overheats Over/Under line voltage Check motor wiring Check for secure connection where duct permitting air loss sections are joined (suggest duct tape at seams for sealed closure) Tighten set screws Clean Secure properly Tighten acorn nuts securing motor hood Replace propeller Check drives Replace motor Check motor wiring Contact power company As a result of our commitment to continuous improvement, Accurex reserves the right to change specifications without notice. Product warranties can be found online at accurex.com, either on the specific product page or in the Warranty section of the website at Accurex.com/Resources/Warranty. *ACCUREX PO. Box 410 Schofield, WI 54476 Phone: 800.aaa.1400 • Fax: 715.241.6191 Parts: 800.355.5354 • accurex.com 475564 • XRAE and XRAS, Rev. 3, March 2018 0 2019 Accurex, LLC


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ACCUREX XRAS (01) PDF MANUAL

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