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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.
Table of Contents
General Safety Information . . . . . . . . . . . . . . . . . . . . 1
General Information
Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Storage - Indoor / Outdoor . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . 3
Vibration Isolators . . . . . . . . . . . . . . . . . . . . . . . . . 4
Flexible Duct Connectors . . . . . . . . . . . . . . . . . . . 4
Effects of Installation on Performance . . . . . . . . . 4-5
Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Variable Frequency Drives . . . . . . . . . . . . . . . . . . 6
Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Belt Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
V-Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . 8
Pitch Protractor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 10-11
Maintenance Log . . . . . . . . . . . . . . . . . . . Backcover
Our Commitment . . . . . . . . . . . . . . . . . . . Backcover
®
General Safety Information
Only qualified personnel should install this fan. Personnel
should have a clear understanding of these instructions
and should be aware of general safety precautions.
Improper installation can result in electric shock, possible
injury due to coming in contact with moving parts, as
well as other potential hazards. Other considerations
may be required if high winds or seismic activity are
present. If more information is needed, contact a licensed
professional engineer before moving forward.
1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC), the National Fire
Protection Agency (NFPA), where applicable. Follow
the Canadian Electrical Code (CEC) in Canada.
2. The rotation of the impeller is critical. It must be free
to rotate without striking or rubbing any stationary
objects.
3. Motor must be securely and adequately grounded.
4. Do not spin fan impeller faster than max cataloged
fan rpm. Adjustments to fan speed significantly
effects motor load. If the fan RPM is changed, the
motor current should be checked to make sure it is
not exceeding the motor nameplate amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with the
equipment.
7. Never open access doors to a duct while the fan is
running.
DANGER
Always disconnect power before working on or near a
fan. Lock and tag the disconnect switch or breaker to
prevent accidental power up.
CAUTION
When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
CAUTION
Precaution should be taken in explosive atmospheres.
Document 452954
Models VAB and VAD
Vane Axial
Vane Axial Fans
1
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Related Manuals for Greenheck VAB
Summary of Contents for Greenheck VAB
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Page 1: Table Of Contents
Document 452954 Models VAB and VAD Vane Axial ® 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. -
Page 2: Receiving
“sweating” of metal parts). All with carrier. Any physical damage to the unit after accessories must be stored indoors in a clean, dry acceptance is not the responsibility of Greenheck Fan atmosphere. Corporation. Remove any accumulations of dirt, water, ice or snow Unpacking and wipe dry before moving to indoor storage. -
Page 3: Installation
Installation any remaining rust from surface with crocus cloth or fine emery paper and oil. Do not destroy the continuity of the Service Access - Greenheck recommends all vane axial ® surfaces. Wipe clean thoroughly with Tectyl 506 (Ashland installations be provided Inc.) or the equivalent. -
Page 4: Controlling Vibration Vibration Isolators
1800 RPM and over. Greenheck recommends a minimum of one fan diameter between a wall and the fan inlet. Flexible Duct Connectors Ducted Inlets - Inlet ducts must provide smooth non Flexible duct connectors should be taut between the fan turbulent airflow into the impeller blades. - Page 5 Three Fan Diameters Turning Turning Vanes Vanes Good Poor Good Poor Ducted Inlet Conditions Diameter Inlet Bell Good Poor Non-Ducted Inlet Conditions Length of Straight Duct Minimum of three fan diameters Good Poor Ducted Outlet Conditions Two Fan Diameters Outlet Cone Good Poor Non-Ducted Outlet Conditions...
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Page 6: Unit Start-Up
CAUTION the fan impeller. When operating conditions of the fan are to be changed (speed, pressure, temperature, etc.), consult Greenheck to determine if the unit can operate safely at the new conditions. Variable Frequency Drive Operation WARNING For operation with Variable Frequency Drive (VFD), always check motor amps when adjusting the operating frequency. -
Page 7: Shaft Bearings
V-Belt Drives Shaft Bearings The bearings for Greenheck fans are carefully selected V-belt drives should be checked for wear, tension, to match the maximum load and operating conditions alignment and dirt accumulation on a regular basis. of the specific class, arrangement, and fan size. The... -
Page 8: V-Belt Replacement
Direct Drive V-Belt Replacement The V-belt drive components, when supplied by Note Greenheck Fan Corporation, have been carefully Blade pitch adjustment can be accomplished using selected for this unit’s specific operating condition. either Master Blade or Pitch Protractor. Follow steps Changing V-belt drive components could result in 1-10 to use Master Blade. -
Page 9: Pitch Protractor
Pitch Protractor CROSSHAIR POINT 0° 5° 10° 15° 20° 25° 30° 35° 40° Instructions 1. Align protractor template edge to corresponding axis. 2. Place trailing edge of blade on protractor crosshairs. Identify current pitch by locating degree line the leading edge lies on. 3. -
Page 10: Troubleshooting
Troubleshooting Your motor service and any troubleshooting must be handled by qualified persons who have proper tools and equipment. Problem Cause Corrective Action Blown fuses Replace fuses with proper type and rating. Overload trips Check and reset overload in starter. Check to see that power supplied agrees with motor Improper power supply nameplate and load factor. - Page 11 Troubleshooting - continued Problem Cause Corrective Action Motor misaligned Realign. Weak support Strengthen base. Coupling out of balance Balance coupling. Driven equipment Rebalance driven equipment. unbalanced Motor vibrates after corrections have been Defective ball bearing Replace bearing. made Bearings not in line Line up properly.
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Page 12: Maintenance Log
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature section of the website at Greenheck.com/Resources/Library/Literature.