Centrifugal Roof and Wall Exhausters
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation, operation
and maintenance procedures for standard units of the
VCR/VCRD/VCR-HP/VCRD-HP/VCR-XP/VCRD-XP -
Centrifugal Roof and Wall Exhausters. Carefully read
this publication prior to installation or maintenance
procedure.
Loren Cook catalog,
VCR
, provides additional informa-
tion describing the equipment, fan performance, available
accessories and specification data.
For additional safety information, refer to AMCA publica-
tion 410-96,
Safety Practices for Users and Installers of
Industrial and Commercial Fans
.
All of the publications listed above can be obtained from
Loren Cook Company by phoning (417)869-6474, exten-
sion 166; by FAX at (417)832-9431; or by e-mail at
info@lorencook.com.
For information and instructions on special equipment,
contact Loren Cook Company at (417)869-6474.
Receiving and Inspection
Immediately upon receipt of a VCR fan, carefully inspect
the fan and accessories for damage and shortage.
• Turn the wheel by hand to ensure it turns freely and
does not bind.
• Record on the
Delivery
Receipt
any visible sign of
damage.
Handling
Lift the fan by the lifting lugs
provided under top cap. Never lift
by the shaft, motor or housing.
Storage
If the fan is stored for any
length of time prior to installation,
store it in its original shipping
crate and protect it from dust,
debris and the weather.
Installation
If the fan was delivered with the motor unmounted, see
the maintenance sections for belt and pulley installation.
If the fan was purchased as a wall mount unit and a
grease terminator or grease trough was not purchased, a
WARNING
This fan has rotating parts. Safety precautions
should be exercised at all times during installation,
operation, and maintenance.
ALWAYS disconnect power prior to working on fan.
1-1/16 inch diameter drain hole should be inserted on the
bottom side of the unit for drainage.
Fan Installation
a. Ensure the fan discharge is a minimum 40 inches
above the roof surface and a minimum of 10 foot from
any building air intake in order to comply with NFPA 96.
b. Minimum exhaust velocity in the duct should be 1500
FPM in accordance with NFPA 96.
c. If the fan is installed on a surface that is not level, install
the fan in a position that places the drain tube at the
lowest position.
d. Secure the fan to the roof curb at all four corners using
a minimum of four anchor bolts, lag screws or other
suitable fastener.
Personal Safety
Disconnect switches are recommended. Place
the disconnect switch near the fan in order that
the power can be swiftly cut off in case of an
emergency, and in order that maintenance per-
sonnel are provided complete control of the
power source.
VCR
VCR
/
VCRD
Lifting Lugs
