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Operation and maintenance manual
NCA Series 400H hand operated single blade leakage rated fire damper
Regular inspection and maintenance of fire dampers is essential to
ensure they remain in good working condition. It is the system owner’s
responsibility to ensure this is carried out.
In accordance with EN 15650:2010 fire damper maintenance routines,
such as that given below, must be carried out at intervals not exceeding 6
months.
Some automatic systems may allow more frequent testing (48 hours or
less) and this may be required by national regulation.
Please note:
This document is relevant only to hand operated S400
dampers. For S400 dampers equipped with an actuator
please see the relevant document.
Installation guide: NCA Series 400 hand operated single blade leakage rated fire damper
Operation and maintenance manual
Page 1 of 3 - Issue A - 03/03/2022
Damper type:
NCA Series 400H hand operated single blade leakage rated fire damper
Thermal link rated temperature:
Delete as appropriate
68°C (red bulb in link) or 93°C (green bulb in link)
Damper reference (if applicable):
Damper location (within site):
Date of inspection:
Step Operation
Notes
Yes/No
1
Is the damper open?
The damper handle should be parallel with the damper body, indicating the
damper is open
2
Is the handle mechanism secure and
undamaged?
Using a pozi-drive screwdriver, ensure the machine screw inside the spindle
cap is secure
3
Remove access door/s to access the inside of
ductwork and damper blade
Both sides of the damper blade should be easily accessible
N/A
4
Is the damper blade in the fully open position
and secure?
The damper blade should be in the fully open position.
Gently try to move the blade by hand, it should not rotate.
5
Is the damper blade unobstructed?
Ensure there is nothing present which is obstructing or could obstruct the
damper blade operating
6
Is the thermal link clean and free from
damage and corrosion?
Thermal links must be cleaned with care and if damaged or heavily soiled
must be replaced
Caution - Thermal links are fragile
7
Is the damper blade and case clean and free
from damage and corrosion?
Use a damp cloth, brush or vacuum cleaner to remove any dirt and debris.
If damaged or corroded dampers must be replaced
Caution - Blade sealing fabric is sharp, PPE should be used
8
Does the damper close correctly?
Pull the test handle on the external mechanism, the damper should close
9
Does the damper open correctly?
Rotate the setting handle 90° anti-clockwise until the underside of the handle
latches onto the thermal link
10
Do you have any concerns about the
installation?
Is there anything that does not look correct, do you have any doubts etc.?
11
Refit access door/s securely
N/A
N/A
Periodic maintenance procedure
If any of questions 1 - 9 is answered ‘no’, or if the answer to
question 10 is ‘yes’, please see troubleshooting overleaf.
