AOC LM740 Specifications download pdf (Page 24)

24 Philips Fortimo HBMt Gen 3 System Design In Guide

Installation instructions

Figure 25. Fixation of the HBMt module

Mechanical xation

The separate components (driver and module(s)) of the Fortimo LED HBMt Gen3

system can be xed in place securely using the mounting holes located on the

module(s) and driver. Please refer to the dimensional drawings for specic details.

Before afxing the Fortimo LED HBMt Gen3, ensure that the mounting surface

is clean and at without any protrusions or pits. To ensure a reliable thermal and

mechanical attachment, we recommend the atness of the mounting surface should

be ≤ 0.2 mm.

For the best thermal performance use a thin layer of thermal paste (max 50

micron) between the module and the mounting surface. The entire bottom surface

of the module needs to be covered with thermal paste, with a typical bond line of

30 to 50 microns. Other thermal interface materials can be used but will require

more cooling from the luminaire (i.e. larger contact area between the luminaire and

the ambient).

Use 4 M3 fasteners for the brackets and apply a torque of 0.6 Nm ± 0.1 Nm. Screw

the module on the luminaire/heatsink by xating the screws in diagonal following

order, this to spread the force over the total module.

If fasteners cannot be used or are not accessible, another mounting option is to use

a spring clip for each bracket. The spring clip will press uniformly the bracket onto

the LED module. In this situation, use the complete length of the pressed groove

from the bracket for the clip. Press force for each clip on position of the bracket is

1000 Nm ± 100 Nm.

Note: When stainless steel fasteners are used in combination with an aluminum

luminaire, depending on local conditions, galvanic corrosion between the metal parts can

occur without preventative measures. It is strongly advised to use a wax or lubricant.

Warning!

The Fortimo LED HBMt Gen3 should always be replaced by

a trained installer. Special attention should be paid to the

following points:

• Do not service the system when the mains voltage is connected;

this includes connecting or disconnecting the cable

• Before a new Fortimo LED HBMt is mounted, the old thermal

interface must be removed and the area must be cleaned

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AOC LM740 Specifications Page 24