IM-5500
Installation, Operation & Maintenance Manual
4
Safety & Hazard Warnings
For general safety practices for air moving equipment, see AMCA Bulletin 410. Twin City Fan & Blower offers many safety accessories.
These safety devices include (but are not limited to) Firestat, inlet and discharge screens. The use and suitability of safety devices is
the responsibility of the purchaser.
All fans should be powered through switches that are easily accessible to service personnel from the fan. Fan power must have the
ability to be “locked out” by service personnel trained in lockout/tagout procedures per OSHA requirements (29CFR1910.147). When
performing lockout, be aware of factors, such as building pressure and additional fans in the system that can influence unwanted fan
rotation (wind milling). If you have any doubt about your ability to perform a task, seek a person qualified to do that task. Before any
work is done on a fan, ensure that the fan is isolated from the electrical supply using a 'lockout/tagout system.'
Note: A stationary, non-rotating fan does not mean that the fan is isolated from the electrical supply. A non-rotating fan could be
subject to controls or other circuit protection devices that may start the fan without notice.
The following safety precautions should be followed, where applicable:
• Do not attempt to slow a rotating impeller even when it is isolated from the electrical supply. Fan impellers have a high inertia and
injury could result from an attempt to stop it. It is recommended that the impeller is isolated by closing off the inlet or outlet to
prevent wind-driven rotation. If an impeller is chocked to prevent rotation, ensure that the chocks are removed prior to start up.
• Wear appropriate personal protective equipment. This may include protective clothing, eye protection, ear protection, respiratory
equipment, hand and foot protection when installing or servicing the fan.
• Always use caution when entering a fan's air path. High velocity airflow can cause you to lose your balance.
• Motor, bearings and drives can be hot, and similarly if the fan is subject to processes that are hot, the fan housing could be hot.
• Sharp edges – wear protective gloves when handling, installing or servicing a fan.
• Fans can operate at high decibel sound levels. Wear proper ear protection to protect from excessive noise levels.
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. 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.
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.
NOTICE: Indicates information considered important, but not hazard-related.
Receiving, Inspection & Unpacking
When the equipment is received all items should be carefully checked against the bill of lading to be sure all crates and cartons have
been received. Before accepting delivery, carefully inspect each carton or crate for visible shipping damage. If any damage is noticed,
the carrier should make the proper notation on the delivery receipt acknowledging the damage. Make notations of all damage on
all copies of the bill of lading and have all copies countersigned by the delivering carrier. The carrier should also fill out a Carrier
Inspection Report. The factory Traffic Department should then be contacted. File claim for damage with the carrier. Physical damage
to the unit after acceptance is not the responsibility of Twin City Fan Companies, Ltd.
Unpack each carton or crate and verify that all required parts and proper quantities of each item have been received. Refer to
drawings for part descriptions. Report shortages or missing items to your local representative to arrange for replacement parts. Due to
availability of carriers and truck space, it is not possible to guarantee that all items will be shipped together. Verification of shipments
must be limited to only those items on the bill of lading.
