Parts List; Fan Inlet Connections - Greenheck DFD Series Installation, Operation And Maintenance Manual

Parts List

Each fan bears a manufacturer's nameplate with model
number and serial number embossed. This information
will assist the local representative and the factory in
providing service and replacement parts. Before taking
any corrective action, make certain unit is not capable
of operation during repairs.
NOTE
For replacement, the windband, vertical supports,
drain trough and curb cap/venturi come as one
complete assembly.
Direct Drive
Hoodband
Motor
Vibration
Isolators
Wheel
Breather Tube
Birdguard in tube
Drain
Trough
Curb Cap/
Venturi

Fan Inlet Connections

In order to ensure proper fan performance, caution must be exercised in fan placement and connection to the ventilation
system. Obstructions, transitions, poorly designed elbows, improperly selected dampers, etc, can cause reduced
performance, excessive noise and increased mechanical stress. For performance to
be as published, the system must provide uniform and stable airflow into the fan.
Poor
Dampers must open fully. Use
motorized dampers in low airflow
applications to reduce losses.
®
Motor Cover
Hood Clip
Motor
Support Pan
Horizontal
Support
Vertical
Support
Windband
Poor
Avoid sharp turns or entrance
conditions which cause uneven
flow. Use turning vanes in elbows
to reduce adverse effects.
A fan manufactured with an explosion resistant motor
does not certify the entire unit to be explosion proof.
Refer to UL Listing mark for the fans approved usage.
La présence d'un moteur antidéflagrant sur un
ventilateur ne garantit pas que tout l'appareil est
antidéflagrant. Pour connaître les emplois autorisés
de l'appareil, voir son marquage de conformité UL.
Belt Drive
Hoodband
Motor
Pulley
Motor
Vibration
Isolators
Hoodband
Bracket
Horizontal
Support
Wheel
Breather Tube
Birdguard in tube
Drain
Trough
Curb Cap/
Venturi
Good
Provide uniform airflow at fan inlet
to ensure optimum performance.
CAUTION
CAUTION
Motor Cover
Shaft
Pulley
Belt
Drive Frame
Assembly
Disconnect
Switch
Fan Shaft
Vertical
Support
Windband
Provide uniform airflow at fan inlet and
through the damper to ensure optimum
performance. Curb cap should be three
wheel diameters from the radius. Use
turning vanes in duct when possible.
Upblast Centrifugal Roof Exhaust 11