Introduction
This bulletin has been prepared to guide the users of
TSL Inline Centrifugal Fans and QSL Mixed Flow Fans
in the proper installation, operation and maintenance
procedures to insure maximum equipment life with
trouble-free operation.
Shipping and Receiving
All Twin City Fan & Blower products are carefully
constructed and inspected before shipment to insure
the highest standards of quality and performance.
Compare all components with the bill of lading or
packing list to verify that the proper unit was received.
Check each unit for any damage that may have
occurred in transit. Any damage should be reported
immediately to the carrier and the necessary damage
report filed.
Handling
Handling of all air moving equipment should be
conducted by trained personnel and be consistent with
safe handling practices. Verify the lift capacity and
operating condition of handling equipment.
Units shipped completely assembled may be lifted
with slings and spreader bars. Use well-padded chains,
cables or nylon straps (see Figure 1). On most units,
lifting lugs are fashioned to protect the fan and fan
housing from damage. Never lift a fan by the inlet or
discharge flange, shafting or drives, wheel, motor or
motor base, or in any other manner that may bend or
distort parts.
If installation is to be delayed, store the unit in a
protected area. Protect the fan and motor bearings from
moisture and vibration (or shock loading). For extended
storage, wrap entire unit in plastic. Wrap loosely so air
may circulate around the fan and moisture does not
collect, or use a desiccant. Extended storage requires
monthly inspections. Check for corrosion or damage to
the unit and for debris within the fan. Rotate the fan
wheel a few revolutions. Stop the wheel in a position
other than the initial position. Grease the bearings every
month with a grease compatible with the grease
supplied with the bearings.
Foundations and Supporting Structures
The TSL and QSL series can be mounted horizontally,
vertically, or at any angle if ordered accordingly.
Mounting brackets are available to accept both vibration
isolating hangers or pads. Typical mounting arrangements
are shown in Figures 2 through 8. Floor or wall mounted
fans may be installed on a flat, rigid foundation.
When mounting to concrete, anchor bolts should be
“L” or “T” shaped with sufficient length for nuts,
washers, shims, and threads for draw-down. Each bolt
should be placed in a sleeve or pipe with diameter
larger than the bolt to allow for adjustment. When the
mounting surface and the surface of the fan base do
not match, shim level. Do not distort the fan when
tightening the anchor bolts.
A fan mounted to or within a structure should be
placed as close as possible to a rigid member such as
a wall or a column. The structure must be designed for
rotating equipment. Static design for strength is not
sufficient to insure operation at low vibration levels.
Figure 1.
Lifting With Lifting Lugs
Lifting With Straps &
(Standard)
Spreader Bar (Not Provided)
©2004 – 2018 Twin City Fan Companies, Ltd.
ES-895
September 2017
TSL and QSL Inline Centrifugal
and Mixed Flow Fans
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Maintain handling equipment to avoid serious
personal injury and do not stand under the load.
CAUTION
Throughout this manual, there are a number of HAZARD WARNINGS that must be read and adhered to in order
to prevent possible personal injury and/or damage to equipment. Two signal words "WARNING" and "CAUTION"
are used to indicate the severity of a hazard and are preceded by the safety alert symbol.
WARNING
Used when serious injury or death MAY result from misuse or failure to follow specific instructions.
CAUTION
Used when minor or moderate injury or product / equipment damage MAY result from misuse or failure to follow
specific instructions.
It is the responsibility of all personnel involved in installation, operation and maintenance to fully understand the
Warning and
Caution procedures by which hazards are to be avoided.
