Specification Sheet

280
CONSTRUCTION/SPECIFICATION CHECKLIST
Fan Housing
• Heavy-gauge rolled steel construction.
• Integral inlet and outlet anges with mounting holes.
• Continuously welded and epoxy coated.
• Belt and bearing tube to protect drive components.
• Removable bearing cover for ease of maintenance.
• Eight mounting supports welded to each fan.
• Adjustable motor base for belt tensioning.
• Extended lube lines.
Centrifugal Wheel
• All aluminum wheel
• Backward inclined for efciency at higher static pressures
• Non-overloading for safe operation in ducted systems
• Tapered blades for efciency and quiet operation
• Heavy aluminum hub for extra strength
• Statically and dynamically balanced for smooth operation
Drives
• Sized for minimum 150% of drive horsepower.
• Single belt adjustable pitch sheaves through 3HP.
• Multiple belts are used on adjustable sheaves 5HP trough 7-1/2HP as required for drive horsepower
• Variable pitch as standard.
• Adjustable tension rods for belt adjustment.
• Nonstatic oil resistant v-belts.
• Keyed, turned, ground and polished shafts.
Bearings
• Bearings are designed for minimum 200,000 hour life, L50.
• Cast iron self-aligning pillow block ball bearings.
• Bearings are sealed and prelubricated.
Motors
• One year motor warranty.
• Brands are nationally recognized and locally serviced.
• NEMA base-mounted motors are standard.
• Open drip-proof construction is standard.
• Premium-efciency, explosion proof, totally enclosed fan cooled (TEFC) and corrosion duty motors can be
specied.
Certications
• AMCA Air and Sound Certied
• cULus 705 Listed
• cULus 762 Listed for grease removal
Entire Fan Unit
• Factory assembled and tested prior to shipment for quality assurance.
MODEL CTB
TUBULAR CENTRIFUGAL INLINE BELT DRIVEN FAN