SAMES KREMLIN Magna-Ram, Руководство пользователя

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Version B June, 2020 11 MagnaRam-SK
1.11 General Electrostatic Systems
The introduction of high voltage electricity into a highly volatile and explosive atmosphere requires that the
following additional design practices be observed for electrostatic spray operations:
1. Transformers, power packs, control apparatus, and all other electrical portions of the equipment,
(except for high voltage grids and cascades and electrostatic atomizing heads and their
connections) should be located outside the spraying area, unless otherwise specified.
2. The electrostatic apparatus should be equipped with automatic controls to disconnect the power
supply to the high voltage transformer and the operator should be signaled in the event of the
following:
a. Failure or stoppage of the ventilating equipment from any cause;
b. Stoppage of the conveyor carrying items through the spray area;
c. Occurrence of a ground or excessive current leakage at any point in the system;
d. Reduction of the clearance between the articles being coated and the electrodes or
atomizing heads to less than the minimum sparking distance. (A sign indicating this safe
distance should be conspicuously posted near the operation).
3. High voltage leads to electrodes and electrostatic atomizing heads should be effectively and
permanently supported on suitable insulators and should be effectively guarded against accidental
contact or grounding.
4. An automatic means should be provided for grounding and discharging any accumulated residual
charge on the electrode assembly or the secondary circuit of the high voltage transformer when the
transformer primary is disconnected from the source of supply.
5. The articles being coated should be supported on conveyors which are arranged as to maintain a
proper electrical pathway to neutral earth and assure that there is a minimum safe sparking
distance between the substrate and electrostatic equipment at all times.
6. Adequate booth, fencing, guards, or railings should be placed around the equipment for the
protection of personnel. These should consist of conducting material which is adequately grounded
and placed at least 5 feet from the spraying equipment.
7. Warning signs should be conspicuously posted in the area pointing out the hazards of high voltage
equipment in a coating environment.
8. The areas used for electrostatic spraying should be protected by automatic fire extinguishing
equipment.
9. If electrically conductive paint is used, the paint tank isolation stand and paint lines should be
barricaded so that personnel or other equipment will not come in contact with or near proximity to
the high voltage in that portion of the system.