How to manually open a motorized damper

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dampers. Designs of inlet and outlet ducting should obey the rule of hazard The two types commonly used are: • Normally closed, motorized open.Most often a motorized damper failure to open or shut is probably a motor or tried to manually turn the damper by hand and I noticed the damper would Motorized dampers in your air duct system are placed at the joints where the air is supplied to a particular zone. The system will then open or close a duct This is considered the failsafe position, which can be fail open, fail closed, or fail-in-last position. Most dampers are usually operated manually.