PennBarry TXB User Manual

Sample Specification

TXD, TXB - Tubeaxial Fans

1.1 Fans shall be tested and rated in accordance with AMCA air and sound methods and standards.

1.2 Fans shall conform to AMCA 99 Standards.

1.3 All motors and electrical components shall comply with NEMA, UL or other governing body.

Direct Drive

Product

2.1 Fan shall be of an axial flow tubeaxial type configuration.

2.2 Fan shall be direct drive with the propeller mounted on the
motor shaft by means of a taperlock bushing.

2.3 Fan casing shall be of all welded construction with a flanged
inlet and outlet, and shall be constructed completely of
carbon steel, stainless steel (type 316 or 304) or aluminum
as indicated on fan schedule.

2.4 The 091 propeller shall be constructed of six cast aluminum
blades fastened directly to a cast aluminum hub assembly.
The 097 propeller shall be constructed of six steel sheet
metal blades fastened directly to a steel hub assembly. The
098 propeller shall be constructed of seven cast aluminum
blades welded to a cast aluminum hub assembly per AWS
welding standards. All hubs are designed to incorporate a
taper lockbushing and are keyed to the motor shaft.

2.5 Fan shall be coated with enamel as standard or optional other
available coating as made available by coating suppliers and
as indicated on the fan schedule.

2.6 The motor shall be of a typical NEMA -T frame type and
standard in nature with the motor industry availability. The
electric motor shall be as indicated on the fan schedule and
is available in any enclosure as made available from the
motor vendors.

2.7 The motor leads shall be extended through the fan casing
for accessibility.

2.8 The final complete fan assembly shall be vibration tested and
mechanically balanced as per AMCA 204 Grade BV-3 / ANSI
S2.19 G 6.3 and the results recorded on a label placed on
the fan assembly.

Accessories

3.1 The fan shall have a sealed access door with quick opening
latches when indicated on the fan schedule.

3.2 The fan shall be of a fixed, reversed airflow configuration.

3.3 The 013-091 fan shall be of a reversible airflow configuration
for supply or exhaust.

PENNBARRY

70

Belt Drive

Product

2.1 Fan shall be of an axial flow tubeaxial type configuration.

2.2 Fan shall be belt driven, sized for 1.5 service factor. Motor
is mounted externally on the fan casing and not exposed
to the air stream.

2.3 Fan casing shall be of all welded construction with a flanged
inlet and outlet, and shall be constructed completely of
carbon steel, stainless steel (type 316 or 304) or aluminum
as indicated on fan schedule.

2.3.1 The fan shall have an inner tube section, fully welded
protecting the shaft, bearings and drive components from
direct air stream exposure.

2.3.2 The inner tube assembly shall have removable end covers
to allow for access to the bearing and drive assembly

2.4 Fan shaft shall be steel, ground for precision fit to bearings
and keyed for driving the impeller and drive sheave.
Shafting sized such that the first critical speed is 125% of
fan maximum speed.

2.5 Fan bearings shall be cast iron housing, self-aligning,
relubricable bearings with grease lines extended to the
exterior of the casing. A.F.B.M.A. Bearing L-10 life of 40,000
hours.

2.6 The 091 propeller shall be constructed of six cast aluminum
blades fastened directly to a cast aluminum hub assembly.
The 097 propeller shall be constructed of six steel sheet
metal blades fastened directly to a steel hub assembly. The
098 propeller shall be constructed of seven cast aluminum
blades welded to a cast aluminum hub assembly per AWS
welding standards. All hubs are designed to incorporate a
taper lock bushing and are keyed directly to the fan shaft.

2.7 The motor mounting base is configured to allow for
various frame sizes and designed to allow for belt tension
adjustment.

2.8 Fan shall be coated with enamel as standard or optional
other available coating as made available by coating
suppliers and as indicated on the fan schedule.

2.9 Fan shall be of AMCA spark resistant construction when
required and as indicated on the fan schedule as AMCA
“A”, “B” or “C” as defined by AMCA Standard 99.

2.10 The motor shall be of a typical NEMA -T frame type and
standard in nature with the motor industry availability. The
electric motor shall be as indicated on the fan schedule and
is available in any enclosure as made available from the
motor vendors.

2.11 The final complete fan assembly shall be vibration tested
and mechanically balanced as per AMCA 204 Grade BV­3 / ANSI S2.19 G 6.3 and the results recorded on a label
placed on the fan assembly.

Accessories

3.1 The fan shall have a belt guard to protect the exposed belts
and drive components or a weather motor and drive cover
as indicated on the fan schedule.

3.2 The fan shall have a sealed inspection door with quick
opening latches when indicated on the fan schedule.

3.3 The fan shall be of a fixed, reversed airflow configuration.

3.4 The TXB-091 fan shall be of a reversible airflow configuration

for supply or exhaust (aluminum propeller only).