2
Note
Warning /
Important
note
Information
Technical
information
Practical tip
Always disconnect, lock, and tag power source before installing or
servicing. Failure to disconnect power source can result in fire, shock, or
serious injury. Motor will restart without warning after thermal protector
trips. Do not touch operating motor, it may be hot enough to cause injury.
Do not place any body parts or objects in fan, motor openings, or drives
while motor is connected to power source.
Do NOT use this equipment in explosive atmospheres!
1. Read and follow all instructions and cautionary markings. Make sure
electrical power source conforms to requirements of equipment.
2. Ventilators should be assembled, installed, and serviced by a qualified
technician. Have all electrical work performed by a qualified
electrician.
3. Follow all local electrical and safety codes in the United States and
Canada - National Electrical Code (NEC), the Occupational Safety and
Health Act (OSHA), and the National Fire Protection Association
(NFPA) Bulletin 96 in the United States. Ground motor in accordance
with NEC Article 250 (grounding). Follow the Canadian Electric Code
(CEC) in Canada.
4. Motor and fan must be securely grounded (bare metal) to a suitable
electric ground, such as a grounded water pipe or ground wire
system.
In United States, to reduce the risk of injury to persons, OSHA complying
guards are required when fan is installed within 8 feet of floor, ground, or
working level.
In Canada, to reduce the risk of injury to persons, CSA complying guards
are required when fan is installed below 2.5 meters (8.2 feet) above floor
or grade level.
5. Do not kink power cable or allow it to come in contact with sharp
objects, oil, grease, hot surfaces, or chemicals.
6. Never open access door to a duct with the ventilator running.
7. Do not operate direct drive fans with speed controller less than 50%
of maximum fan speed.
Description
Power roof ventilators are designed, depending on model number, to either supply air to, or exhaust air from, commercial, institutional, and industrial
buildings. Ventilators are available in a multitude of configurations including direct-drive or belt-drive units; roof, wall, or combination roof/wall mount
and upblast or downblast discharge designs. Some units feature additional certifications required for use in kitchen ventilation systems.
Models 5DDU08 thru 5DDU18, 5DDW08 thru 5DDW18, 5BDD10 thru 5BDD49, 5BDU10 thru 5BDU36, 5ADE10 thru 5ADE24, 5ADS12 thru
5ADS24, 5DDD08 thru 5DDD18, 5FSU10 thru 5FSU20, 5ABE18 thru 5ABE36, and 5FSU10 thru 5FSU20 are UL Listed, Standard 705, & CSA
Certified when sold complete with motor and drive. Upblast Centrifugal Roof Ventilators 5BDU10 thru 5BDU36, 5DDU10 thru 5DDU18, 5DDW10
thru 5DDW18 are UL Listed, Subject 762, when sold complete with motor and drive.
If fans are stored for any length of time, they should be stored in a clean, dry location to prevent rust and corrosion. Outdoor storage is not recom-
mended. When outdoor storage is necessary, fans should be protected from the elements as completely as possible. Cover the fan inlet and outlet
and keep motors dry and clean.
For extended storage (more than 3 months) motor shafts and bearings should be rotated monthly. If stored longer than 6 months, bearing grease in
motor and fan should be purged and replaced with compatible grease. Belts should be rechecked for proper tension. Storage records should be kept
to assure proper maintenance. The factory can advise warranty centers to provide motor and bearing service if needed.
Storage
