Hatteland HT 221, Руководство пользователя

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14 Installation
IND100210-19
General Installation Recommendations
Installation and mounting of computers
1. Units may be intended for various methods of installation or mounting (rack mounting, panel mounting,
bracket mounting, ceiling/wall mounting); for details, please see the relevant mechanical drawings.
2. Adequate ventilation is a necessary prerequisite for the life of the unit. The air inlet and outlet openings must
definitely be kept clear; coverings which restrict ventilation are not permissible. The product might be without
any ventilation aperatures which means pt.2 does not apply.
3. Exposure to direct sunlight can cause a considerable increase in the temperature of the unit, and might under
certain circumstances lead to overtemperature. This point should already be taken into consideration when
the bridge equipment is being planned (sun shades, distance from the windows, ventilation, etc.)
4. Space necessary for ventilation, for cable inlets, for the operating procedures and for maintenance, must be
provided.
5. To further improve the cooling of the unit we recommend installing Cooling Fans underneath blowing upwards
into the unit air inlet. This may be required in high temperature applications and also when there is reason to
expect temperature problems due to non-optimal way of mounting.
6. Products with AC input shall be grounded to protective Earth (Safety Ground) when necessary via the bolt
(usually on terminal plate) available on the product.
Products with DC input shall be grounded to protective Earth (Safety Ground) via the bolt (usually on terminal
plate) available on the product. A shorter and thicker cable gives better grounding. A 6mm² is recommended,
but a 4mm² or even 2.5mm² can be used for this purpose.
7. Expose to heavy vibration and acoustic noise might under certain circumstances affect functionality and
expected lifetime. This must be considered during system assembly and installation. Mounting position must
be carefully selected to avoid any exposure of amplified vibration.
8. Additional rules may apply to certain procedures where the symbols and are present. For more
information, review “IEC62368 policy for Hatteland Technology product” section later in this manual.