Greenheck Housed Plenum Array , Plug and Plenum Fans (475405) - Manual (Page 6)

6 Housed Plenum Array, Plug and Plenum
Installation - Plenum and Plug Fans - continued
Bases (Foundation and Isolation)
Critical to every fan installation is a strong, level foundation.
A reinforced poured concrete pad with a structural steel
base or inertia base provides an excellent foundation.
Structural bases must be sturdy enough, with welded
construction, to prevent flexing and vibration.
To eliminate vibration and noise from being transferred
to the building, vibration isolators should be used. The
fan is mounted directly on the isolation base and must
be supported for the entire length of the fan base angle
(Refer to the installation manual for structural bases if the
base was supplied by Greenheck). Isolators are installed
between the isolation base and the foundation.
After the fan, isolation base, and isolators are installed,
the entire assembly must be leveled. Position the level on
the isolation base, not the fan shaft, for proper leveling.
Additionally, the motor and fan shafts must be level and
parallel relative to each other for proper alignment.
Typical Fan on Isolation Base with Isolators
Belt Guards
Greenheck offers
various types of
customized belt
guards dependent
upon fan model,
arrangement and
motor position.
Motor position is
determined from
the drive side.
The various types of belt guards are shown in these
illustrations. If the guard is not purchased from
Greenheck, they must be supplied by the installer or
owner.
If the belt guard is not factory mounted or was not
supplied by Greenheck, then it must be field mounted.
Brackets and mounting hardware are the responsibility
of the installer.
This figure illustrates the
suggested attachment
point for belt guard
mounting bracket locations.
These locations vary with
motor mounting position,
arrangement, and fan type.
The bearing supports and
fan structure are used in
most instances and when
the motor is not mounted
to the fan itself, a bracket should also be located near it.
This information is intended as only a guide and actual
field conditions may dictate another mounting location
for the guard brackets. Refer to local codes for securing
guarding.
Suggested Attachment Points
(shaded gray)
Motor Position: Side
APH, Arr 1, 3
Motor Position (W/Z)
APM, PLG Arr 9
APH Arr 1, 3
Motor Position (X/Y)