Greenheck USF and CSW (479870) - Manual (Page 11)

Utility and Centrifugal Fans 11
®
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. When a discrepancy is found, the local
Greenheck Fan Corporation Sales Representative
must be notified immediately so that corrective
action may be investigated, also verify electrical
conformance to specifications. Unauthorized
alterations and unauthorized backcharges will not be
recognized by Greenheck Fan Corporation.
After the unit has been assembled, installed and all
utilities have been hooked up, the unit is now 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
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
(direct drive).
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.
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.
Additional Steps for Initial Start-Up
1. Check for proper wheel rotation by momentarily
energizing the fan. Access to view the wheel can
be gained through the blower housing access
panel.
One of the most frequently encountered problems
are motors that are wired to rotate the wheel in
the wrong direction. This is especially true with
3-phase installations where the motor will run in
either direction, depending on how it has been
wired. To reverse rotation of a 3-phase motor,
interchange any two of the three electrical leads.
Single phase motors can be reversed by changing
internal connections as described on the motor
label or wiring diagram.
2. Fans with multi-speed motors should be checked
on low speed during initial start-up.
3. Check for unusual noise, vibration or overheating
of bearings. Refer to the “Troubleshooting” section
of this manual if a problem develops.
4. Grease may be forced out of the bearing seals
during initial start-up. This is a normal self-purging
feature for the type of bearing used on this
product.