Universal Single Width Fans
13
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Rotation
Rotation
Backward Inclined
Forward Curved
Airflow
Airflow
Backward Inclined
Forward Curved
Airflow
Airflow
These are the original drawings on the Illustrator file
when I opened it. The IOM had the wheel layered on
top of the scroll.
I will incorporate the
wheel on the scroll
without creating
an additional
layer in the
InDesign file.
April 19, 2011
I positioned the wheels onto the scroll outline. The forward curved wheel was mirrored and
positioned on the scroll above. This is how was done in the InDesign Utility Fans IOM file.
The wheel was laid on top of the scroll within the InDesign file. Better to do this within Illustrator.
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Airflow
Airfoil
Backward Inclined
Forward Curved
Airfoil
Unit Start-Up
Visual Inspection of Equipment
The equipment type and arrangement should be verified as ordered at once when it arrives at the jobsite. If
a discrepancy is found, the local representative must be notified immediately so that corrective action may
be investigated. Verify electrical conformance to specifications. Unauthorized alterations and unauthorized
backcharges will not be recognized by manufacturer.
After the unit has been assembled, installed and all utilities have been hooked up, the unit is ready for operation.
Check
Before starting the unit, check the following:
1. Confirm that building supply voltage matches the voltage for which the unit is wired.
2. Check all piping and wiring penetrations made by contractors for water tightness. All penetrations must be
made watertight to prevent water damage to the unit and building.
3. Rotate the fan wheel manually to be sure that it is free to operate. Remove any dirt or debris that may have
accumulated during installation.
4. Check the fan bearing setscrews for tightness.
5. Check alignment of sheaves and V-belts. See Belt Drive Maintenance section.
6. Inspect all fasteners to ensure that none have loosened during shipment.
7. Check flex coupling for proper alignment and connect between motor shaft and fan shaft (arrangement 8).
8. Check all guarding to ensure that it is securely attached and not interfering with rotating parts.
9. Check all electrical connections for proper attachment.
10. Check housing and ductwork, if accessible, for obstructions and foreign material that may damage the fan
wheel.
11. Fill drainage piping trap if installed.
WARNING
Disconnect and secure to the
OFF
position all electrical power to the fan prior to inspection or servicing.
Failure to comply with this safety precaution could result in serious injury or death.
DANGER
Pour écarter les risques de blessure grave ou de mort, débrancher et verrouiller l’alimentation électrique en
position « Arrêt » avant tout contrôle ou entretien.
R
o
ta
tio
n
R
o
ta
tio
n
Rotation
Rotation
Backward Inclined
Forward Curved
Airflow
Airflow
Backward Inclined
Forward Curved
Airflow
Airflow
These are the original drawings on the Illustrator file
when I opened it. The IOM had the wheel layered on
top of the scroll.
I will incorporate the
wheel on the scroll
without creating
an additional
layer in the
InDesign file.
April 19, 2011
I positioned the wheels onto the scroll outline. The forward curved wheel was mirrored and
positioned on the scroll above. This is how was done in the InDesign Utility Fans IOM file.
The wheel was laid on top of the scroll within the InDesign file. Better to do this within Illustrator.
barb w
R
o
ta
tio
n
R
o
ta
tio
n
R
o
ta
tio
n
Airflow
Airfoil
Backward Inclined
Forward Curved
Airfoil
R
o
ta
tio
n
R
o
ta
tio
n
Rotation
Rotation
Backward Inclined
Forward Curved
Airflow
Airflow
Backward Inclined
Forward Curved
Airflow
Airflow
These are the original drawings on the Illustrator file
when I opened it. The IOM had the wheel layered on
top of the scroll.
I will incorporate the
wheel on the scroll
without creating
an additional
layer in the
InDesign file.
April 19, 2011
I positioned the wheels onto the scroll outline. The forward curved wheel was mirrored and
positioned on the scroll above. This is how was done in the InDesign Utility Fans IOM file.
The wheel was laid on top of the scroll within the InDesign file. Better to do this within Illustrator.
barb w
R
o
ta
tio
n
R
o
ta
tio
n
R
o
ta
tio
n
Airflow
Airfoil
Backward Inclined
Forward Curved
Airfoil
Wheel Rotation
Rotation direction of the wheel is critical. Incorrect rotation will result in reduced air performance, increased
motor loading and possible motor burnout.
Check wheel rotation by momentarily energizing the unit and noting if rotation is in the same direction as the
airflow at the outlet and conforms to the rotation decal affixed to the unit.
Wheels as viewed from the drive side:
