Electric accompanied by heat in the installation of the precautions

　　1. electric accompanied by the tropical is strictly prohibited on the ground long-distance dragging, folding, so as not to wear electric accompanied by the tropical insulation, affecting its electrical performance

　　2. shall not be in contact with high temperature objects, prohibit high temperature welding slag spattered on the surface of the electric accompanied by the tropical, resulting in scalded

　　3. prohibit the external impact and sharp objects damage to the electric accompanied by the tropical

　　4. electric accompanied by the tropical bending radius shall not be less than the specified value (generally take its thickness 5 times)

　　5. electric accompanied by the tropical and accessories connected, in order to facilitate maintenance, should leave a certain amount of margin, generally stay about 30cm 6. In order to facilitate the maintenance, there should be a certain amount of richness, generally stay about 30cm

　　6. When installing, the electric accompanied by the tropical should be pasted on the surface of the pipeline (container) and fixed

　　7. When installing on the plastic pipe, it is suitable to paste aluminium tape or aluminium piece on its surface first, and then the electric accompanied by the tropical paved on the surface, which is conducive to the electric accompanied by the tropical even heat dissipation, and improve the efficiency of the

　　8. As far as possible, should be accompanied by the electric tropical paved on the pipeline Below 45 °, in order to facilitate the temperature uniformity

　　9. In some often disassembled, such as: valve, flange, pump and other places to use the method of disc paste, in order to facilitate the maintenance without damage to the electric accompanied by the tropical

　　10. Electric accompanied by the tropical and accessories supporting the use of wiring should be consistent with the GB3836.3-2000 in 4.1. 4.2 in the requirements, and in the power supply junction box away from the 75mm At 75mm from the power junction box with rubber to the nameplate firmly fixed in the electric accompanied by tropical, electric accompanied by tropical must be equipped with explosion-proof temperature controller and accessories compatible with the environment. When wiring, it is forbidden to connect the busbar short and resistance wire and busbar metal shield layer lap to avoid leakage and short circuit

　　11. The sealing device size of each accessory must be in line with the type of electric accompanied by the heat, the fasteners should be fastened in place, can not be loosened in order to ensure the normal protection and explosion-proof performance

　　12. Such as the application of mechanical thermostat in the system, it should be adjusted before the power is turned on to adjust the temperature control point, and it is forbidden to adjust it with the power on, and the temperature control head should be kept away from the electric accompanied by the heat. Away from the electric accompanied by tropical, so as not to measure inaccurate, resulting in the system can not be normal operation

　　13. To ensure that the system is well grounded, its grounding resistance is not greater than 4Ω

　　14. All wiring is completed, must be on the system of electrical insulation, performance testing, (insulation resistance should be greater than 10MΩ) and the power resistance of each circuit to measure the theoretical value of the actual value must be similar (general deviation within ± 10%), such as the three-phase band must also check the three-phase band. Three-phase band must also check its three-phase balance resistance value, the general deviation of ± 5% between

　　15. The above installation test can be carried out after passing the test run, section by section to check the heat and whether the electrical parameters are normal, such as in the four hours after the power has not been found abnormalities can be carried out pipeline thermal insulation

　　16. In the installation of thermal insulation materials and then check the electrical performance, such as intact, then energised for four hours, in order to observe whether the operation is normal. If there is an abnormal situation should immediately check, find out the fault point, and make modification, complete and then power on four hours after not found abnormal situation can be waterproof layer installation

　　17. In the installation of waterproof layer (such as iron, stainless steel plate) is strictly prohibited when drilling damage to the electric accompanied by tropical

　　18. In all the heat preservation, anticorrosive waterproofing work is completed, and then repeat the inspection of the electric accompanied by the electrical performance of the tropical, such as intact can be energized, run After eight hours to see whether the electrical indexes are normal, to be all normal operation, the whole accompanying heat project can end the construction, handed over to the owner to use

　　19. Pay attention to the pipeline sweeping line, should close the accompanying heat system, sweeping line temperature must be lower than the electric accompanied by tropical heat-resistant grade, in order to ensure the normal service life

　　20. In addition to the year-round need to accompany the heat of the pipeline, every year to re-open the accompanied by the heat of the system, to carry out the routine electrical inspection, so as to Early discovery of the problem, timely repair

　　21. Valve installed on the electric accompanied by tropical forbidden with polyurethane on-site foaming, to prevent electric accompanied by tropical clamped in the middle of the damage, and at the same time prohibit the electric accompanied by tropical clamped in the middle of the other thermal insulation materials

　　22. Thermal insulation shell with metal materials in the valve tee at the application of the metal piece of pad in the electric accompanied by tropical in order to prevent cuts and injuries to electric accompanied by tropical

　　23. Electric accompanied by heat equipment maintenance, should first cut off the power supply, and then Repair

　　24. In addition to the above installation and put into operation process, other outstanding matters, but also need to be in accordance with the national provisions of the explosion hazardous places of electrical installation regulations and electrical installations and acceptance of the construction and acceptance of the provisions of the specification requirements for the execution of