Twin City Installation and Maintenance Manual IM-3100
3
Motors require no lubrication for 10 years of normal
operation.
The inlet venturi is molded shock-resistant, bonded,
reinforced fiberglass and will require no maintenance.
Wall Application
1. Servicing or inspecting the unit can be accomplished
from the exterior by removing the flanged extruded
louver and from the interior of the building by
removing the fiberglass inlet (see Figure 2).
2. To remove the motor assembly for servicing, unplug
the motor from the provided outlet and unfasten the
four vibro-isolator bolts. The entire motor assembly,
including the wheel and bearing (belt drive units), will
slide out of the housing.
Inline Application
For easy maintenance of the inlet unit, provide a dropout
section between the ductwork and duct adapter (see
Figure 3).
Servicing or inspection can then be accomplished by
removing the dropout section, then removing the
fiberglass inlet. The motor assembly can then be
removed by disconnecting the motor from the provided
outlet and unfastening the four vibro-isolator bolts.
Periodic inspection and cleaning of the fan will insure
smooth operation.
Figure 1. Removal of Wood Shipping Supports
Housing
Instructions: Remove wood shipping supports
frame before installing unit
.
Figure 2. Wall Application
Electrical Wiring By Others
Hole Provided for Electrical Entrance Into Unit
Electrical Junction Box With Outlet
Belt Drive Motor
Assembly
Direct Drive Motor
Assembly
Louver
Assembly
Fiberglass Inlet Venturi
Trim Angle Assembly
Fan
Housing
Assembly
Access To Power Pack of Ventilator
By Removing 4 Fasteners (Interior Side)
or Louvers (Exterior Side)
