Instruction Manual

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READ AND SAVE THESE INSTRUCTIONS

INSTALLATION, OPERATING INSTRUCTIONS & PARTS MANUAL

High Velocity Restaurant-Duty Utility Set

Belt Driven for Roof Mounting

Electrical wiring and connections should be done in accordance with local ordnances and the National

Electric Code, NFPA70. Be sure the voltage and phase of the power supply and the wire amperage

capacity is in accordance with the motor nameplate. For additional safety information refer to AMCA

publication 410-96, Recommended Safety Practices for Users and Installers of Industrial and Commercial

Fans.

Receiving and Inspection

Upon receiving unit, check for any damage and report it immediately to the carrier. Also check that all

accessory items are accounted for.

GENERAL SAFETY INFORMATION

Installation of this ventilator should only be performed by a qualified professional who has read and

understands these instructions and is familiar with proper safety precautions. Improper installation poses

serious risk of injury due to electric shock, contact with rotating equipment and other potential hazards.

Special considerations resulting from high winds or seismic activity may be required. Consult with a

licensed professional engineer for more information if necessary.

1. Wheel must be free to rotate and should not strike or rub any stationary object.

2. Follow all local electrical and safety codes, as well as the National Electrical Code (NEC), the

Occupational Safety and Health Act (OSHA), and the National Fire Protection Association

(NFPA) Bulletin 96, where applicable.

3. Motor must be securely and adequately grounded.

4. Fan wheel should not run at speeds higher than specified for motor furnished (see product catalog)

with the ventilator at any given HP. Adjustments to fan speed significantly effect motor load. If

the fan RPM is changed, the motor current should be checked to be sure it is not exceeding the

motor nameplate amps.

5. Always disconnect power before working on or near a fan. Lock and tag the disconnect switch or

breaker to prevent accidental power up.

6. Caution-when servicing fan, motors may be hot enough to cause pain or injury. Allow fan to cool

before servicing.

7. Secure the power cable to prevent contact with sharp objects.

8. Do not kink power cable and never allow the cable to come in contact with oil, grease, hot

surfaces or chemicals.

9. Make certain that the power source is compatible with the requirements of your equipment.

10. Wiping or cleaning rags and other flammable waste materials must be placed in a tightly closed

container and disposed of later in a proper fashion.

Summary of content (5 pages)

PAGE 1
READ AND SAVE THESE INSTRUCTIONS INSTALLATION, OPERATING INSTRUCTIONS & PARTS MANUAL High Velocity Restaurant-Duty Utility Set Belt Driven for Roof Mounting Electrical wiring and connections should be done in accordance with local ordnances and the National Electric Code, NFPA70. Be sure the voltage and phase of the power supply and the wire amperage capacity is in accordance with the motor nameplate.
PAGE 2
INSTALLATION WARNING: DISCONNECT POWER BEFORE INSTALLING OR SERVICING. Caution: Do not raise ventilator by its discharge duct, wheel, motor, or bearings – use a sling or platform. Roof Mounting (Only) 1. Ventilators are designed for installation atop a prefabricated or factory built roof curb. Follow manufacturer’s instructions for proper curb installation. 2.
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PULLEY ALIGNMENT Pulley alignment is adjusted by loosening the motor pulley or driven pulley set screws and moving the pulley on the shaft. See Fig. 2. A straight edge should be used when aligning pulleys. Fig. 2 BELT TENSION Belt tension should be checked after the first 48 hours of fan operation. Do not tension belts by changing the setting of the motor pulley, this will change the fan speed and may damage the motor. To re-tension belts, with the power to the fan motor OFF.
PAGE 4
MOTOR PULLEY ADJUSTMENT The adjustable motor pulley is factory set for the RPM specified. Speed can be increased by closing or decreased by opening the adjustable motor sheave. Two groove variable pitch pulleys must be adjusted an equal number of turns open or closed. Any increase in speed represents a substantial increase in horsepower required by the unit. Motor amperage should always be checked to avoid serious damage to the motor when the speed is varied.
PAGE 5
TROUBLESHOOTING CHART Problems and Potential Cause Fan Inoperative • • Open circuit breaker or overload in starter set too low. Reset circuit breaker or check setting of overload. Motor wired incorrectly. Check motor wiring to wiring diagram located on fan motor. Insufficient Air or Pressure • • • Fan rotating in the wrong direction. Be sure fan is rotating clockwise looking down on drives. Poor inlet conditions. There should be a straight clear duct at the inlet.