Greenheck SQ Series User manual

Maintenance
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 after installation. Motors supplied with
grease fittings should be greased in accordance with manufacturer’s recommendations. With motor temperatures under 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.
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.
Unit Size A B C D
60-75 105/8163/4141/287/8
80-95 131/4193/4171/2117/8
100 185/8213/4191/2137/8
120 185/8233/4211/2157/8
130 185/8253/4231/2177/8
140 191/2273/4251/2197/8
160 231/231 281/2227/8
Installation
Upon receiving unit, check for any damage and report it immediately to shipper. Also check that all accessory items are accounted for.
Move fan to desired location and determine position of access panels, discharge, and motor. Make sure inlet and outlet have at least
2.5 times the wheel diameter (duct diameter) before any obstructions like an elbow or transaction. Attach fan to suitable framework as
specified (hanging or base vibration isolators are recommended). See chart below for dimensions of vibration isolator centerlines
(Fig. 1). See Fig. 2 for physical dimensions.
The voltage rating of the motor must be checked for compatibility to supply voltage prior to final electrical connection. Electrical lead-
in wires are then connected to the factory supplied safety disconnect switch. All wiring must conform to local and national codes.
A1in.
C sq.
B sq.
B sq.
1in.
C sq.
Pre-Starting Checks
Check all fasteners for tightness. The
wheel should rotate freely and be
aligned as shown in Fig. 3. Wheel
position is preset and the unit tested
at the factory. However, movement
may occur during shipment, and
realignment may be necessary.
Centering (height alignment) may be
accomplished by loosening the set
screws in the wheel and moving the
wheel to desired position.
Material Approx. Unit
Unit Size A B C Thickness (ga.) Weight (lbs.)
60-75 13 12 87/820 25
80-95 16 15 117/820 40
100 21 17 137/820 60
120 21 19 157/820 75
130 21 21 177/820 90
140 22 23 197/818 105
160 26 26 227/818 130
Overlap 1/4 in.
Gap 1/8 in.
SQ
100-160
SQ
60-95
Vibration Isolator Dimensional Data
SQ Dimensional Data
CA
A
C
Access
Panel
BA
A
AccessPanel
BD
D
B
B
AccessPanel
Fig. 1
Fig. 2
Fig. 3
®
READ AND SAVE THESE INSTRUCTIONS PN 453077
Installation, Operation and Maintenance Manual
All dimensions are in inches.
All dimensions are in inches.
Model SQ Direct Drive
Centrifugal Inline Fans
Fig. 4
Wheel Rotation
Direction of wheel rotation is
critical. Reversed rotation will
result in poor air performance,
motor overloading and possible
burnout. Check wheel rotation
(all SQ fans have CW wheel
rotation when viewed from top of fan) by
momentarily energizing the unit. Rotation should be
clockwise as shown in Fig. 4 and correspond to the
rotation decal on the unit.
C
l
o
c
k
w
i
s
e

Troubleshooting
Side Discharge Duct Openings
NOTE: Each fan bears a manufacturer’s nameplate with model number and serial number embossed. These numbers will assist
the local Greenheck representative and the factory in providing service and replacement parts.
VENTURI
WHEEL
ACCESS
PANEL
HOUSING
VENTURI
PANEL WHEEL
MOTOR
COVER
MOTOR
MOTOR
COVER
MOTOR
ACCESS
PANEL
NOTE: Before taking any corrective action, make certain unit is not capable of operation during repairs
Replacement Parts
Problem Cause Corrective Action
System resistance too high Check system: for proper operation of backdraft
or control dampers,obstruction in ductwork, etc.
Reduced
Airflow Unit running backwards Correct as shown in Fig. 4
Excessive dirt buildup on wheel Clean wheel
Improper wheel alignment See Fig. 3 and Pre-Starting Checks
Wheel improperly aligned and rubbing See Fig. 3 and Pre-Starting Checks
Excessive
Noise or Foreign objects in wheel or housing Remove objects, check for damage
Vibration
Unbalance of wheel caused by Remove buildup
excessive dirt and grease buildup
Unit Size Width Height
60-75 97/887/8
80-95 127/8117/8
100 137/8137/8
120 157/8157/8
130 177/8177/8
140 197/8197/8
160 227/8227/8
Fig. 5 All dimensions are in inches.
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 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, they should be returned to the nearest
authorized motor service station. Greenheck will not be responsible for any removal or installation costs.
A a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.
IOM SQ
Rev. 5 September 2004
Copyright © 2004 Greenheck Fan Corp
GREENHECK
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
www.greenheck.com
Duct Length
The inlet and outlet duct length should be
approximately two to three wheel diameters
long before and after the fan to achieve
cataloged performance.
Side Discharge
Make sure discharge is orientated in the same
direction as originally ordered, performance will
change with different discharge positions. Refer
to Fig. 5 for proper side discharge definition.
Refer to the CAPS program or consult factory
for performance corrections.
Left Side
Discharge
Right Side
Discharge
Inline
Discharge
Inlet
Height
Width