CHAPTER 4
3.Installation Preparation
3.1.Environmental Requirements
3.1.1.Temperature and Humidity Requirements
To ensure the normal running of the equipment and prolong its service life, please make sure that the temperature and humidity of the equipment room are within the allowed range of the equipment operation.
The temperate shall range within -5°C ~ +50°C and the indoor temperature range of 18°C ~ 25°C is recommended. Too high temperature will do great harm to the equipment and long-term high temperature will accelerate the ageing of insulation materials, reduce the running stability of components and even affect the service life of the equipment.
The humidity range shall range from 5% to 95%, preferably 20% ~ 60%. Too high humidity inside the equipment room may cause poor insulation performance of the insulation materials or even current leakage, which will cause short circuit or fire disaster. In addition, too high humidity will also cause changes of the mechanical performance of the materials, oxidization of the metal part and corrosion. However, too low humidity will cause the generation of static electricity.
3.1.2.Cleanness Requirements
Certain cleanness is required for the operating environment of the equipment and dust should be avoided as much as possible, because dust will cause harm to the safe running of the equipment. When dust falls down on the equipment body, it can cause static absorption and result in poor contact of the metal plug-ins or metal contact points, especially when the indoor RH is slightly lower. This will not only affect the service life of the equipment but also cause communication failure. Furthermore, the dust falling down on the optical interface of an interface module installed in the equipment will severely affect the interface data transmission or even cause transmission interruption. Therefore, dustproof measures must be taken for the equipment room where the equipment operates. It is recommended that the concentration of particles be less than 180 mg/ m3 and such devices as printers and copying machines be place as far as possible from the equipment, so as to prevent paper scraps and ink powder from being absorbed into the equipment inside.
3.1.3.Floor Requirements
The equipment room floor shall first of all satisfy the bearing capacity requirement and it should be dust proof, fire proof, insulated and wearproof. The floor can be made of linoleum flooring, ethylene perchloride, resinous vanish or can be the anti-static raised floor. The antistatic floorboards should be tightly fit and robust, with the horizontal error no greater than 2mm per square meter. The ground or floor must be statically grounded and the resistance of the unit raised floorboards should accord with the Technical Specification for the Raised Floor in Computer Rooms. The floor can be connected to the grounding device via a current-limiting resistor and connection line.
3P@C Installation Manual
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