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“ C o m p l e t e A i r C o n t r o l a n d D i s t r i b u t i o n S o l u t i o n s . ”
w w w . n a i l o r . c o m
Calgary, Canada
Tel: 403-279-8619
Fax: 403-279-5035
Houston, Texas
Tel: 281-590-1172
Fax: 281-590-3086
Toronto, Canada
Tel: 416-744-3300
Fax: 416-744-3360
Las Vegas, Nevada
Tel: 702-648-5400
Fax: 702-638-0400
“ C o m p l e t e A i r C o n t r o l a n d D i s t r i b u t i o n S o l u t i o n s . ”
Page 2.091
2/20 IOM-FSDIMP
Page 2 of 2
Dampers with Position Indicating Device
1. Use the signal from the damper’s position indication device to determine if the damper is in the fully open position.
2. Remove air pressure or electrical power from the actuator to cause the actuator’s spring return feature to close the
damper.
3. Use the signal from the damper’s position indication device to determine if the damper is in the fully closed position.
4. Reapply air pressure or electrical power to reopen the damper.
5. Use the signal from the damper’s position indication device to determine if the damper is in the fully open position.
Dampers without Position Indicating Device
1. Visually confirm that the damper is in the fully open position.
2. Ensure that all obstructions are out of the path of the damper blades and then remove air pressure or electrical power
from the actuator to cause the actuator to spring to the fully closed position.
3. Visually confirm that the damper is in the fully closed position.
4. Reapply air pressure or electrical power to reopen the damper.
Care should be exercised to ensure that all tests are performed safely by personnel wearing the appropriate personal
protective equipment and such tests do not cause system damage. All inspections and testing shall be documented
indicating the location of the damper, date of inspection, name of inspector, deficiencies detected, and how deficiencies
were corrected.
