Accurex XRUD, Manual

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Shaft – Precisely sized, ground, and polished so the first
critical speed is at least 25% over the maximum operating
speed. Close tolerances, where the shaft makes contact
with bearings, results in longer bearing life.
Bearings – 100% factory tested and designed specifically
for air handling applications with a minimum L10 life in
excess of 100,000 hours (L50 average life of 500,000
hours).
True Vibration Isolation – True vibration isolators contain
two independent studs with rubber neoprene to support
the drive assembly and wheel for long life and quiet
operation. No steel-on-steel contact.
Clean Out Port – Allows the outside of the wheel to be
cleaned through a 4 inch diameter removable plug in
the windband.
Non-Stick Coated Steel Wheel – Heavyweight steel wheel
with a non-stick coating eliminates imbalance in heavy
grease applications. The steel wheel is a backward inclined,
non-overloading centrifugal type.
Drain Trough – Allows for one-point drainage of water,
grease and other residue.
Curb Cap with Mounting Holes – Steel curb cap has
pre-punched mounting holes to ensure correct attachment
to the roof.
Hinged Kit –Allows maintenance personnel to hinge the
entire fan up to gain access to wheel ductwork for regular
inspection and cleaning.
Leakproof Construction – One-piece windband is
continuously welded to the curb cap for leakproof
protection.
Drive Assembly – Dual belts, pulleys and keys are
oversized 150% of driven horsepower. Machined cast
steel pulleys are adjustable for final system balancing.
Belts are static-free and oil-resistant.
Motor Cover – Steel construction. Stainless steel fasteners
are attached for easy removal and access to the motor
compartment and drive assembly.
Permatector™ Coating – Unit is constructed of a
minimum of 16-gauge steel. Entire unit is powder coated
with chemical-resistant Permatector™ finish.
Motor – Carefully matched to the fan load and mounted
out of the airstream.
Windband – Uniquely spun one-piece steel windband
with a rolled bead for extra strength. Windband directs
exhaust air away from the mounting surface.
NEMA-3R Disconnect Switch Mounted & Wired –
All wiring and electrical components comply with the
National Electrical Code (NEC) and are either UL/cUL
Listed or Recognized.
Motor Cooling – Cooling fins located on top of the fan
wheel draw outside air through a large breather tube,
directly into the motor compartment. Positive motor
cooling with fresh air results in maximum motor life.
Lifting Points – Select models have various lifting points
located on the drive frame and bearing plates.
Name Plate (not shown) - Permanent stamped aluminum
plate for exact model and serial identification number.
Heat Baffle (not shown) - Extends motor life by reducing
the amount of heat through the bottom of the motor
support pan.
STANDARD CONSTRUCTION FEATURES-XRUBS
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10
11
12
13
14
16
15
17
2
3
4
5
6
7
8
9
ROOF UPBLAST EXHAUST MODEL COMPARISON
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9 5 6 7
3
4
18
2
2 1 10 11 13
12
14
15
16
17