Corp. Ventilation Hood User Manual

ManualsBrandsGreenheck Fan ManualsVentilation HoodCentrifugal Roof Exhaust Fans LBP

1Series L: Models LB, LBP, LD, and LDP

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 instructions could result in personal injury

and/or property damage!

PN 453283

Series L: Models LB, LBP, LD, and LDP

Low Silhouette Centrifugal Roof Exhaust Fans

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) and

the National Fire Protection Agency (NFPA),

where applicable. Follow the Canadian Electric

Code (CEC) in Canada.

2. The rotation of the wheel 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 wheel 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, lock and tag power source before

installing or servicing. Failure to disconnect power source

can result in ﬁre, shock or serious injury.

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.

Series L Exhaust Fans

Greenheck’s Series L, low silhouette, models LD, LB,

LDP, and LBP centrifugal roof exhaust fans provide the

industry’s best performance and durability for general clean

air applications. Series L exhaust fans have the broadest

performance in the industry, up to 1.25 in. wg (311 Pa) and

37,500 cfm (63,713 m

/hr).

The severe duty models LDP and LBP are far superior to

any centrifugal roof exhaust fan currently in the market.

Specifically designed for applications with extremely high

structural design load requirements. Designed with structural

steel supports and ESD-603D louver blades, the severe duty louver enclosure (SDLE) may be used in any

application which requires a fan to endure high winds with the potential of wind blown debris. Miami-Dade

notice of acceptance number 03-0422.05.

General Safety Information

Summary of content (8 pages)

PAGE 1
PN 453283 Series L: Models LB, LBP, LD, and LDP Low Silhouette Centrifugal Roof Exhaust 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.
PAGE 2
Receiving Upon receiving the product, check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received. Inspect each crate for shipping damage before accepting delivery. Notify the carrier if any damage is noticed. The carrier will make notification on the delivery receipt acknowledging any damage to the product. All damage should be noted on all the copies of the bill of lading which is countersigned by the delivering carrier.
PAGE 3
Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive coating with petroleum solvent and clean with lint-free cloths. Polish any remaining rust from surface with crocus cloth or fine emery paper and oil. Do not destroy the continuity of the surfaces. Thoroughly wipe clean with Tectyl® 506 (Ashland Inc.) or the equivalent.
PAGE 4
G Removing From Storage As fans are removed from storage to be installed in their final location, they should be protected and maintained in a similar fashion until the fan equipment goes into operation. Pre-Starting Belt Tension Checks 6. Always loosen tension enough to install belt without stretching, see Figure 3. BELTS Pre-Startup Checks 1. Check all fasteners for tightness. The wheel should rotate freely and be aligned as shown in Figure 1. WHEEL OVERLAP AND GAP DIMENSIONS Model G - Overlap in.
PAGE 5
WARNING Always disconnect, lock and tag power source before servicing. Failure to disconnect power source can result in fire, shock or serious injury. Deflection= Belt Span 64 WARNING Belt Span Uneven cleaning of the wheel will produce an out of balance condition that will cause vibration in the fan. WARNING This unit should be made non-functional when cleaning the wheel or housing (fuses removed, disconnect locked off). Figure 6 Belt/Bearing Maintenance 10.
PAGE 6
Parts List NOTE: Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information will assist the local Greenheck representative and the factory in providing service and replacement parts. Before taking any corrective action, make certain unit is not capable of operation during repairs. CAUTION: A fan manufactured with an explosion-resistant motor does not certify the entire unit to be explosion proof. Refer to UL Listing Mark for the fans approved usage.
PAGE 7
Troubleshooting WARNING: Before taking any corrective action, make certain unit is not capable of operation during repairs. PROBLEM Reduced Airflow Excessive Noise or Vibration CAUSE CORRECTIVE ACTION System resistance too high Check system for proper operation of backdraft or control dampers; remove obstructions in ductwork, etc. Unit running backwards See Pre-Starting Checks. Fan speed too low Increase fan speed. Excessive dirt buildup on wheel Clean wheel.
PAGE 8
Maintenance Log Date Time Notes Warranty Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year.