COMBINATION FIRE / SMOKE DAMPERS
SERIES: CFSD-40, 50, 60, 80
1½ HOURS & 3 HOURS FIRE RATINGS
OPERATION & MAINTENANCE
FIRE / SMOKE DAMPER FOR USE IN DYNAMIC SYSTEMS
FIRE RESISTANCE RATING 1½ HOURS & 3 HOURS
LEAKAGE CLASS I - 350⁰F & CLASS II - 250ºF TEMP. DEGRADATION TEST
2000 & 4000FPM VELOCITY @ 4 IN. W.G. STATIC PRESSURE
FILE NO:R22165
Right to alterations reserved.
Safid-CFSD-OM-Manual
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COMBINATION FIRE / SMOKE DAMPERS
SERIES: CFSD-40, 50, 60, 80
1½ HOURS & 3 HOURS FIRE RATINGS
Operation , Periodic Inspection and Maintenance
Fire Mode
If detected a high temperature exceeding 165ºF, the ERL (Thermoelectric Tripping Device) will
interrupts the power supply to the actuator and the energy stored at the spring-return of the actuator
will moves the damper back to its safe position (closed damper blades).
Smoke Mode
If the smoke detector detected a smoke, the power supply to the damper actuator must be
automatically disconnected and the energy stored at the spring-return of the actuator will moves the
damper back to its safe position (closed damper blades).
Maintenance
Dampers shall be maintained at intervals as stated in "NFPA 90A" and 92A. A duct access door to be
located on the jackshaft side of each damper for inspection and maintenance. Some other
maintenance codes includes: UL 864, AMCA 503-03 and local codes.
Per NFPA 92, Dedicated Smoke Control Systems shall be tested at least semiannually and Non
dedicated Smoke Control Systems shall be tested at least annually and dampers that are a part of
these systems shall be cycled as part of this testing. Per NFPA 80, fire dampers (which includes
Combination Fire/Smoke Damper s) shall be inspected 1 year after installation and then every 4 years,
except for hospitals where the frequency is every 6 years. In addition to these requirements, NFPA 72,
National Fire Alarm and Signaling Code, outlines periodic testing requirements for various types of fire
alarm systems and components associated with these systems (i.e. Duct Smoke Detectors).
All requirements of testing for actuated smoke and fire/smoke dampers are to be conducted under
normal HVAC airflow conditions.
1. Remove any obstructions, dirt, rust, corrosion, or other observed conditions that could impede
proper damper operation. Clean damper blades and other moving parts if necessary. Use of a mild
detergent or solvents is recommended for any cleaning required.
2. Linkage and jackshaft bearing brackets should be lubricated with a dry lubricant (such as T.F.E. Dry
Lube). Never use a regular lubricating oil on dampers, as it will attract dirt and grit. Blade linkage is
concealed in the side jamb out of the airstream and is maintenance free. Bearings are self-lubricating
oilite bronze.
3. Verify that appropriate power (voltage or pneumatic air pressure) is being supplied to the actuator.
Check actuator and tighten the linkage or coupling as necessary. Refer to manufacturer’s
recommended maintenance procedure for pneumatic and electric actuators.
4. 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.
Right to alterations reserved.
Safid-CFSD-OM-Manual
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COMBINATION FIRE / SMOKE DAMPERS
SERIES: CFSD-40, 50, 60, 80
1½ HOURS & 3 HOURS FIRE RATINGS
Damper Troubleshooting
Symptom
Damper does not fully
OPEN or CLOSE
TRD Sensor tripped
Damper does not operate
Possible cause
Frame is racked
Actuator linkage loose
Defective actuator
Damper linkage screw
Damper contaminants
Heat
No power supply to motor
Corrective action
Adjust frame such that it is square/plumb
Close damper, off power, adjust/tight linkage
Replace
Damper installed away from designated line
Clean with non-oil based solvent
Push the TRD reset button
ON (faciliate) the power supply
! Warning
• If the damper(s) have closure springs, caution needs to be taken to ensure injury does not occur.
• Ensure that the fan is off.
Receiving , Storage and Preparation
• Upon delivery, inspect shipping containers and contents closely. Note any damages on freight carrier's
delivery receipt.
• Store dampers in a cool, dry and safe location in an orderly manner away from construction site,
warehouse traffic, other materials, etc. Cover with plastic sheeting to protect from excessive moisture,
dirt and debris.
• Inspect dampers prior to installation. Dampers must be cleaned as per procedures outlined in this
document prior to installation if dirt, rust or corrosion is observed.
Notes
• Safid manufactured UL Classified Combination Fire & Smoke Dampers (ALL TYPES) are
maintenance free and doesn’t need any spare parts except defective ERL (Thermo electric tripping
device) and actuator - UL listed- are readily available with Safid and can be provided upon request.
• Any corrective maintenance outside Safid manufacturing facility without prior notice will make the
damper warranty null and void. Therefore please bring the damper to Safid production facility to do
required corrective maintenance and to perform all quality checks to make it qualify again as per ANSI/
UL555 & UL555S.
Right to alterations reserved.
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