Iron Castings - Cast Iron Railway Parts
Products mainly include: railway connecting rod, railway shoulder, railway track fitting, stop lock bar.
Material: grey iron, ductile iron
The most common used grey iron is HT200 & HT250, ductile iron QT400 and QT500, besides, we also have high level Cast Iron such as high chrome casting iron, SiMo ductile iron.
We owned the advanced equipments including 6 automatic molding lines, 22 electric furnaces, 120 sets machining equipments, shot blasting line and advanced inspection equipments.
Cast Iron Railway Parts Cast Iron Railway Parts,Railway Parts,Cast Iron Railway Track,Railway Fasteners Railway Dandong Hengrui Machinery Co., Ltd. , http://www.hrcastings.com
1. Before the electric heating system is delivered to users, it should complete the operation and commissioning and system acceptance. If the user is refitted after acceptance of the electric heating system, the electric heating system should be confirmed before the start of the system, especially the heating element is not damaged, with emphasis on testing the insulation resistance of the system.
2. Before the heating, the electric heating system shall be tested and checked, including the entrance power supply, the ground end, and the control system. For the power supply section, the stability of the voltage should be checked. And check whether the various security protection facilities can work normally, and determine whether the temperature indicated by the thermostat can be turned on or off according to the control settings.
3, to check the surface before starting. If the electric heating and heating area needs to place furniture, it is recommended to use furniture with legs. And it is forbidden to perform drilling and other actions that may damage electric heating in the area where electric heating is laid.
4. For users who have peak-valley electricity prices during heating in winter, they should adjust or start peak-valley metering and operate correctly under the guidance of relevant departments.
Second, start the electric heating system properly:
After doing the above preparations, the following steps should be taken to properly start the electric heating system:
1. Before the heating season starts the electric heating system for the first time, first confirm that the thermostat is in the power-off state.
2. Switch on power to the system.
3, open the thermostat power supply, according to the use of thermostat instructions, select the temperature control mode, confirm that the thermostat working status and the corresponding settings.
4. Observe and test the working conditions of the system, including the ground heating rate, the working status of the thermostat, and the operation of the safety protection system.
Third, standard use
After the start of the electric heating system, it does not mean that you can sit back and relax. On the contrary, you should strengthen the normative management from the following aspects:
1, heating temperature settings. When using the electric heating system, the normal heating indoor temperature is recommended to be set at 16°C-18°C. When the room temperature is 18°C, the average temperature of the ground surface is 26°C ± 2°C, and the body temperature at this time has reached 21°C. Weak old people, patients and young children can increase the set temperature appropriately, but it is recommended not to exceed 20°C.
2, energy-saving operation management. First of all, for long-term uninhabited users, when using electric heating systems for room freeze protection, it is recommended to set the temperature to about 5°C. Too low temperature settings may cause indoor equipment or water pipes below the freezing point due to indoor structure, electrical heating layout, wind speed, temperature controller position and temperature measurement accuracy.
Finally, when the normal heating period sets the temperature according to the different functions of the room, the temperature difference of the adjacent room should be controlled within 5°C. When leaving the room for a short period of time, the room temperature setting may be appropriately lowered, for example, at about 12°C, but the system should not be turned off. Uninhabited rooms should also be kept at low temperatures in order to ensure the heating needs of adjacent rooms.
How to operate scientifically after installing the electric heating system
First, before starting the electric heating system, the following preparations should be made: