ETS NORD FDMS Leitfaden

NORDfire

Fire damper maintenance

FDMS damper activation and change of the fuse Lk. 2

FDMS retroﬁt limit switch installation Lk. 4

FDMR, FDMR-60, FDMB, FDMQ ja FDMA-PM fuse change Lk. 6

FDMR, FDMR-60, FDMB ja FDMQ retroﬁt limit switch installation

package Lk. 8

FDMA fuse change Lk. 9

BFN-T & BFL-T actuator installation (by Belimo) Lk. 10

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2RDM-065-0922

®NORDfire |Fire damper maintenance

Replacement fuse product code: KK101068

Only 72 degrees

1. FDMS ﬁre damper is closed, not activated

2. Unscrew almost the butterﬂy nut that is holding the fuse from the threaded rod (when replacing the fuse

remove butterﬂy nut completely).

3. Pull the fuse out against the butterﬂy nut (when changing the fuse, pull the fuse completely out).

FDMS damper activation and change of the fuse

Images are for illustrative purposes.

We reserve the right to make changes. RDM-065-0922 3

®NORDfire |Fire damper maintenance

4. Open the blade using the handle.

5. Push the fuse back in, keeping the blade in the open position. The shorter tooth of the fuse locks the blade

in place.

6. When the butterﬂy nut is tightened again, the ﬁre damper is activated.

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4RDM-065-0922

®NORDfire |Fire damper maintenance

Is required:

FDMS ﬁre damper,

a limit switch mounting clip corresponding to the size of the ﬁre damper,

4 pc 4,2 ×13 mm screw (is not included in the set).

1. First, loosen the adjustment screws of the limit switches and push the switches down a little.

FDMS retroﬁt limit switch installation

A limit switch mounting clip

with limit switches

FDMS ﬁre damper

Images are for illustrative purposes.

We reserve the right to make changes. RDM-065-0922 5

®NORDfire |Fire damper maintenance

2. Press the mounting clip against the collar of the ﬁre damper and attach the clip to the damper through the

holes on the sides with screws.

3. Adjust and tighten the limit switch to the position so that the switch goes to the bottom in both positions

and that there is a click heard in the end.

The limit switch can be tested by pressing down on the wing of the switch.

Blade is closed Blade is open

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6RDM-065-0922

®NORDfire |Fire damper maintenance

FDMR, FDMR-60 FDMB, FDMQ ja FDMA-PM fuse change

Replacement fuse product code: KK101037

72 degrees (optional fuses also 104 or 147 degrees)

Option 1

1. Open the maintenance hatch on the side of the ﬁre damper by removing the screws.

2. Place the replacement fuse in the upper holder and push the spring down with both hands while pushing

the fuse in to the lower holder.

Images are for illustrative purposes.

We reserve the right to make changes. RDM-065-0922 7

®NORDfire |Fire damper maintenance

Option 2

1. Remove the ﬁre damper mechanism by unscrewing the four bolts in its corners.

2. Place the replacement fuse in the upper holder and push the spring down with both hands while pushing

the fuse in to the lower holder.

3. Attach the mechanism back to the ﬁre damper so that the position of the axis and blade corresponds to

the position of the handle of the mechanism.

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8RDM-065-0922

®NORDfire |Fire damper maintenance

Replacement package product code: 110421775

First, remove the plastic protective plates from the sides of the mechanism and replace them with protective

plates equipped with limit switches in the installation package.

Attention!

FDMR, FDMR-60, FDMB and FDMQ retroﬁt limit switch installation package

Make sure the limit switch wings are installed in

the correct position (as shown on the picture).

Images are for illustrative purposes.

We reserve the right to make changes. RDM-065-0922 9

®NORDfire |Fire damper maintenance

Replacement fuse product code: KK101034

72 degrees (optional fuses also 104 or 147 degrees)

1. Open the inspection hatch on the side of the ﬁre damper or duct and insert the fuse into one of the two

pins inside the damper.

2. Press the pins together and insert the other end of the fuse to the other pin.

FDMA fuse change

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10 RDM-065-0922

®NORDfire |Fire damper maintenance

BFN-T ja BFL-T actuator installation (by Belimo)

min. 20 mm

12 mm

20 mm

3 mm

20 mm

3 mm9,5... 11 mm

5 Nm

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