JK
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Multi-Leaf DamperJK Leakage air flow with control damper closed according to DIN EN 1751, up to class 4 Ferdinand Schad KG SteigstraGe 25-27 D-78600 Kolbingen Telephone +49 (0) 74 63 - 980 - 0 Fax +49 (0) 74 63 - 980 - 200 info@schako.de www.schako.de

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08/11 - 2 Construction subject to change. Version: 03.05.2019 No return possible!

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Multi-leaf damper JK Description Application range Multi-leaf dampers type JK are used in air-conditioning and ventilation systems as control, throttle or shut-off dampers to control pressure and volumetric flow. The flow-favouring aluminium blades are adjusted together, rotating in opposite directions, via external plastic gear wheels. The external arrangement of the gears has the benefit that in comparison to internally arranged wheels exposed to the air flow, they do not become soiled so quickly. A cover plate protects the gear wheels from outside dirt and reduces the personal accident...

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Multi-leaf damper JK Model JK-LP JK-LU JK-...-R JK-...-L Accessories Construction - locking device - Galvanised sheet steel - loose - Seals - Special rubber - Hollow-body blades - Aluminium profile, flow-favouring and torsion-resistant - Block adjustment in opposite directions - Bearing - Plastic bearing (JK-LP) - Sintered bearing (JK-LU) - Frame - Profiled sheet steel galvanised 1.5 mm, dimensionally stable - Depth of the frame = 180 mm - with profiled connection frame - with frame bores (at an extra charge): on one side (-RB1) - with frame bores (at an extra charge): on two sides (-RB2) -...

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Multi-leaf damper JK Models and dimensions Dimensions JK-LP (with plastic bearing) JK-LU (with sintered bearing) Selection diagram When selecting the multi-leaf dampers, the permitted width must be selected according to the total pressure loss (see selection table above). Max. differential pressure 1000 Pa. All combined lengths and widths available! Construction subject to change.

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Multi-leaf damper JKFrame bore (-RB1/ -RB2) lengths and heights available. Corner angle As standard, multi-leaf dampers are supplied with corner angles. The special form of the corner holes allows them to be connected to the connection systems available on the market (e.g. Metu system M 2/M 3) The above illustration shows the division of multi-leaf dampers greater than 1998 mm in height. The blades in the two sections are joined by a coupling rod. The primed mounting frame 35/35/4 is only available in primed design. Construction subject to change.

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Multi-leaf damper JK Multi-leaf damper divided vertically The figure opposite shows the division of multi-leaf dampers greater than 1998 mm in width. It is not possible to join the two sections. Operating side 1 x "on the left" and 1 x "on the right". All frames are supplied in primed design. Vertically and horizontally divided multi-leaf dampers The figure opposite shows the division of multi-leaf dampers greater than 1998 mm in height and width. The blades in the two sections on top of each other are joined by a coupling rod. It is not possible to join the horizontally adjacent sections....

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Multi-leaf damper JK Dimensions of accessories Assembly detail Installation frame (-ER2) Flat-steel counter frame (-FG1) Angular steel counter frame (-WG1) Multi-leaf dampers can be additionally fitted with: 1.) Installation frame 35/35/4 with riveted wall anchors (-ER2) 2.) Flat-steel counter frame 33/5 (-FG1) 3.) Angular steel counter frame 30/30/3 (-WG1) undrilled or drilled. All frames are supplied in primed design. EJ wise the adjusting mechanism A bearing block is mounted ex-works for shaft design (W02/W03). When a servo cylinder is mounted in factory, the bearing block is mounted as...

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Multi-leaf damper JK limit switch CLOSED with pneumatic servo cylinder H = 201-565 or H = 200-600 Console type I (screwed-on) only available with shaft design (W02/W03)! Electric limit switches can be installed to indicate position or to perform switching functions Installation options: - Damper position "CLOSED" 1 limit switch (-ESZ) - Damper position "OPEN" 1 limit switch (-ESA) - with 2 limit switches, "CLOSED" and "OPEN" (-ES2) If an electric actuator or pneumatic servo cylinder is used, the limit switches can also be installed as shown in the figure. Console type II (screwed-on)...

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Multi-leaf damper JK Technical data Pressure loss and noise level Pressure loss Open connection Correction factor (for flow generated noise) Construction subject to change.

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Multi-leaf damper JKSelection actuator / servo cylinder JK-LP / JK-LU (with electric actuator) JK-LP/JK-LU with pneumatic servo cylinder The electric actuator or pneumatic cylinder can also be installed When a thrust actuator or servo cylinder is mounted on site, at a later stage. it is recommended also ordering the bearing block, in order to ensure better absorption of the thrust. Construction subject to change.

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Multi-leaf damper JK Model Electric actuators *Spring return actuator 62 dB (A) Construction subject to change.

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Multi-leaf damper JKElectric terminals 24 V AC/DC, 230 V AC Two-point Three-point Connection diagram Pneumatic servo cylinder Electric terminals 24 V AC/DC, 230 V AC Two-point Legend Dpt (Pa) = vstirn (m/s) = Pressure loss Intake velocity, blower stream velocity, outflow velocity, relative to B x H Blade position A-weighted sound power level [Lwa = lwai + KF] A-weighted sound power level relative to 1 m2 Density Correction factor Face area Height Width Leak air volume Leak air volume Leaf area Construction subject to change.

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Multi-leaf damper JK Order details 01 Example JK-LP-0400-0201-SV-W01-R-E000-AU-NA-ER2-RB1-ESA Multi-leaf damper, rectangular design, airtight I with sintered bearing I width 400 mm I height 201 mm I galvanised sheet steel I with shaft design 50 mm I operating side on the right I without actuator, with loose locking device I fitted outside I no spring return actuator I with installation frame, with wall anchors I with frame bores on one side I with external limit switch, position "OPEN" ORDER DETAILS 01 - Type JK = Multi-leaf damper, rectangular design, airtight 02 - Model LP = with plastic...

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