ETS NORD NORDfire, Руководство пользователя

Страница: 51 / 57

RDT-07-0122
51
® NORD fire |
FDMQ
Images are for illustrative purposes
We reserve the right to make changes
Tab 11.3.3. Relative level expressing the shape of the spectrum
v
[m/s]
f [Hz]
63 125 250 500 1000 2000 4000 8000
2 -4,5 -6,9 -10,9 -16,7 -24,1 -33,2 -43,9 -56,4
3 -3,9 -5,3 -8,4 -13,1 -19,5 -27,6 -37,4 -48,9
4 -3,9 -4,5 -6,9 -10,9 -16,7 -24,1 -33,2 -43,9
5 -4,0 -4,1 -5,9 -9,4 -14,6 -21,5 -30 -40,3
6 -4,2 -3,9 -5,3 -8,4 -13,1 -19,5 -27,6 -37,4
7 -4,5 -3,9 -4,9 -7,5 -11,9 -17,9 -25,7 -35,1
8 -4,9 -3,9 -4,5 -6,9 -10,9 -16,7 -24,1 -33,2
9 -5,2 -3,9 -4,3 -6,4 -10,1 -15,6 -22,7 -31,5
10 -5,5 -4 -4,1 -5,9 -9,4 -14,6 -21,5 -30
11 -5,9 -4,1 -4 -5,6 -8,9 -13,8 -20,4 -28,8
12 -6,2 -4,3 -3,9 -5,3 -8,4 -13,1 -19,5 -27,6
12. Material
12.1 Damper bodies are supplied in the design made of galvanized plate without any other surface
finishing. Damper blades are made of fire resistant asbestos free boards made of mineral
fibres. Control devices of dampers has cover from mechanically resistant and standing plastic
and rest of the parts is galvanised without further surface treatment.
Springs are galvanized.
Thermal protective fuses are made of sheet brass, thickness = 0.5 mm.
Fasteners is galvanized. Fasteners is galvanized.
12.2 According to the customer's requirements, damper can be made of stainless material.
Specifications for stainless-steel models – classification of stainless steel:
• Class A2 – Food-grade stainless steel (AISI 304 – EN 17240)
• Class A4 – Chemistry-grade stainless steel (AISI 316, 316L – EN 17346, 17349)
The respective stainless steel is the material for all components present or accessing the
damper interior; components outside the damper body are typically from galvanised sheet met-
al (fasteners for mounting the servo drive or mechanics, mechanics components except Item 4),
frame components.
The following components, including the fasteners, are made from stainless steel at all times:
1) Damper body and all components permanently attached
2) Leaf holders, including pins, metal parts of leaf
3) Control components inside the damper (leaf angle selector, pin with lever)
4) Mechanical components entering the interior of damper body (lower sheet of mechanics,
lock holder “1”, lock lever “2”, lock spring, 8 dia. stopper pin, mechanics pin)
5) Inspection hole cover including the clip and fasteners (if they are parts of the cover)
6) Bearing for torque transfer from the lever with pin on the angle selector at the leaf (made
from AISI 440C)
The leaf of the damper is made from a single piece of homogeneous material Promatect-MST,
thickness 40 mm.
Plastic, rubber and silicon components, sealants, foaming bands, glass-ceramic seals,
housings, brass bearings of the leaf, servo drives, and end switches are identical for all material
variants of the dampers.
The thermal link is identical for all material variants of the dampers. Upon specification by
customer, the thermal link may be made from A4 stainless steel. The solder is standard,
corresponding to the initialisation temperature.
The temperature-dependent initiator of the servo drive (sensor) is modified for stainless-steel
L
rel
Material, finishing