Greenheck CUBE-098 Installationsanleitung

Upon receiving unit, check for any damage

and report it immediately to the shipper. Also

check to see that all accessory items are

accounted for.

Move fan to desired location and fasten

securely through mounting holes in base.

Shims may be necessary depending upon

roofing material thickness. The diagram

below shows dimensions for Model CUBE.

Access to the motor compartment is

accomplished by removing the screws

designated “R” in Fig. 1. The cover can then

be removed and placed on a flat surface in

an area protected from strong winds.

The motor’s amperage and voltage rating

must be checked for compatibility to the

supply voltage prior to final electrical

connection. For NFPA - restaurant CUBE

applications, the electrical supply must enter

the motor compartment through the breather

tube. For other non-flammable applications

the electrical supply can be routed through

the conduit chase between the curb cap and

the bottom of the motor compartment.

Consult local code authorities for your

specific requirements.

A drain trough is provided on all CUBE fans

for single-point drainage of water and

residue. Some means for collection of this

residue must be provided, either a container

directly under the trough or use of an

adapter and pipe to carry the residue to a

remote collection point. An optional grease

trap with water separator baffles is available

from your Greenheck representative.

Installation, Operating and Maintenance Manual

READ AND SAVE THESE INSTRUCTIONS

Model CUBE Belt Drive

Upblast Centrifugal

Roof Exhaust Fan

PN 457693

MODEL A B *C D Shaft

Bearings

Damper

Size

Roof

Opening

Approx.

Unit

Weight

CUBE-098, 101, 101HP, 121, 131 19 247/8281/4173/83/412x12 141/2x 141/266

CUBE-141, 141HP

CUBE-161, 161HP, 161XP 22 287/8293/4193/83/416x16 181/2x 181/287

CUBE-180 3/4

CUBE-180HP 1 126

CUBE-200 30 353/8285/821 3/4

18x18 201/2x 201/2

CUBE-200HP 1 142

CUBE-220, 220HP

CUBE-240, 240HP, 240XP 34 423/4337/8251/21 24x24 261/2x 261/2175

CUBE-300, 300HP, 300XP 40 50 36 29 1 30x30 321/2x 321/2313

CUBE-360, 360HP, 360XP 46 585/8391/8293/836x36 381/2x 381/2440

CUBE-420 52 653/16 443/4351/4

11/442x42 441/2x 441/2578

CUBE-480 58 743/16 481/836 11/248x48 501/2x 501/2675

Dimension “A” is the inside dimension of the curb cap. The roof curb should be 11/2in. less than

the curb cap to allow for roofing and flashing.

All dimensions are in inches. *May vary depending on motor size.

Dimensional Data

13/4 in.

D*C

Fig. 1

Installations

Recommended

General

Ventilation

Installation

Recommended

Commerical

Kitchen

Installation

8 in. or 12 in. min.

Recommended

Roof Opening

3/4 in.

11/4 in. 11/4 in.

Recommended

Duct and

Damper Size

Wiring by

Others

Factory Wired

Motor to

Disconnect

Roof Deck

Damper

Welded Duct

by others

min. of 18 in.

above roof

deck (per

NFPA)

NEMA 3R

Disconnect

factory wired

from motor to

disconnect

through the

breather tube

Liquid Tight

Flexible Conduit

by Others

Recommended

Roof Opening

Roof Deck

Minimum 40 in.

Discharge

Height

8 in. min.

Grease

Trap

Vented Curb

Extension

Optional

(per NFPA)

WHEEL

ROTATION

All CUBE fans

have CW wheel

rotation when

viewed from top

of fan.

WHEEL

OVERLAP

DIMENSIONS

Fig. 2 Fig. 3

Fig. 4

Fig. 6

Fig. 5

Direction of wheel rotation is critical. Reversed rotation will result in poor air performance, motor overloading and possible

burnout. Check wheel rotation (viewing from the shaft side) by momentarily energizing the unit. Rotation should be clockwise

as shown in Fig. 3 and correspond to the rotation decal on the unit.

If adjustments are made, it is very important to check the pulleys for proper alignment. Misaligned pulleys lead to excessive

belt wear, vibration, noise and power loss. (See Fig. 4 )

For all CUBE units belt tension can be adjusted by loosening four fasteners (marked “R”) on the drive frame. The motor plate

slides on the slotted adjusting arms and drive frame angles in the same manner (see Fig. 5). Belt tension should be adjusted

to allow 1/64 inch of deflection per inch of belt span. For example, a 15 inch belt span should have 15/64 inch (or about 1/4

inch) of deflection with moderate thumb pressure at mid-point between pulleys. (See Fig. 6). Overtightening will cause

excessive bearing wear and noise. Too little tension will cause slippage at startup and uneven wear.

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 the horsepower required by a unit. Motor amperage should always

be checked to avoid serious damage to the motor when speed is varied.

CORRECT WRONG WRONG WRONG

Belt Span

Deflection = Belt Span

NOTE:

Identical fasteners

on opposing side

Pre-Starting Checks

Check all fasteners for tightness. The wheel should rotate freely and be aligned as shown in Fig. 2. Wheel position is preset

and the unit is test run at the factory. Movement may occur during shipment, and realignment may be necessary. Centering

can be accomplished by loosening the bolts holding the drive frame to the shock mounts and repositioning the drive frame.

Wheel and inlet cone overlap can be adjusted by loosening the set screws in the wheel and moving the wheel to the desired

position.

MODEL G

098-161 1/4 in.

180-300 1/2 in.

360-480 3/4 in.

MAINTENANCE

Belts tend to stretch after a period of time. They should be checked periodically for wear and tightness. When replacing

belts, use the same type as supplied with the unit. Matched belts should always be used on units with multigroove pulleys.

For belt replacement, loosen the tensioning device far enough to allow removal of the belt by hand. Do not force belts on or

off. This may cause cords to break, leading to premature belt failure. Once installed, adjust belts as shown in “Pre-Starting

Checks.”

Shaft bearings can be classified in two groups: relubricating and non-relubricating. All bearings on standard Model CUBE

fans are factory lubricated and require no further lubrication under normal use (between -20°F and 180°F in a relatively clean

environment). Units installed in hot, humid or dirty locations should be equipped with special bearings. These bearings will

require frequent lubrication. Caution should be employed to prevent overpacking or contamination. Grease fittings should be

wiped clean. The unit should be in operation while lubricating. Extreme care should be used around moving parts. Grease

should be pumped in very slowly until a slight bead forms around the seal. A high grade lithium base grease is

recommended.

Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to exterior

surfaces only. Removing dust buildup on motor housing ensures proper motor cooling. Greasing of motors is only intended

when fittings are provided. Many fractional motors are permanently lubricated and should not be lubricated further. Motors

supplied with grease fittings should be greased in accordance with manufacturers’ recommendations. Where motor

temperatures do not exceed 104°F (40°C), the grease should be replaced after 2000 hours of running time as a general rule.

Wheels require very little attention when moving clean air. Occasionally, oil and dust may accumulate causing imbalance.

When this occurs, the wheel and housing should be cleaned to ensure smooth and safe operation.

The unit should be made non functional when cleaning the wheel or housing (fuses removed, disconnect locked off, etc.).

All fasteners should be checked for tightness each time maintenance checks are performed prior to restarting unit.

A proper maintenance program will help these units deliver years of dependable service.

CAUSE CORRECTIVE ACTION

System resistance too high Check system: Proper operation of

backdraft or control dampers,

obstruction in ductwork, etc.

Unit running backwards Correct as shown in Fig. 3.

Excessive dirt buildup on wheels Clean wheel.

Improper wheel alignment Center wheel on inlets.

Bad bearings Replace.

Belts too tight or too loose Refer to Fig. 6 and adjust tension.

Wheel improperly aligned and Center wheel on inlets. See Fig. 2.

rubbing

Loose drive or motor pulleys Align and tighten. See “Pre-Starting

Checks.”

Foreign objects in wheel or Remove objects, check for damage

housing or unbalance.

Unbalance of wheel caused by Remove buildup.

excessive dirt and grease buildup

REDUCED

AIRFLOW

PROBLEM

EXCESSIVE

NOISE OR

VIBRATION

TROUBLESHOOTING

NOTE: Before taking any corrective action, make certain unit is not capable of operation during repairs.

WARRANTY

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from

the date of purchase. Any units or parts which prove to be 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. Should motors furnished by Greenheck prove defective during this period, theyshould be returned

to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

IOM CUBE FS

Rev. 3 January 2005

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.

PARTS LIST

HOOD

MOTOR

DRIVE

FRAME

ASSEMBLY

SHOCK

MOUNTS (4)

WHEEL

MOTOR PULLEY

BELT

SHAFT

PULLEY

BEARINGS

BIRDGUARD

*CURB CAP / VENTURI

CONDUIT

CHASE

HOOD BAND

FAN SHAFT

*WINDBANDS

*VERTICAL

SUPPORTS

*DRAIN TROUGH

BREATHER

TUBE

GREENHECK

P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410

PH. 715-359-6171

www.greenheck.com

* For replacement, the windband, vertical supports, drain

trough and curb cap/venturi come as one complete assembly.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.

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