The maintenance of electric heating constant temperature batching tanks should focus on key aspects such as heating system, temperature control, and sealing. The following are specific methods:
1、 Heating system maintenance
1. Regularly check the insulation performance of electric heating elements (such as heating tubes and heating wires). If surface carbonization or damage is found, it should be replaced in a timely manner to avoid safety hazards caused by local overheating.
2. When cleaning the heating surface, power off and use a soft cloth to remove carbon deposits or oil stains. Scratching with hard objects may damage the heating layer.
2、 Maintenance of temperature control system
1. Calibrate the temperature sensor and digital display to ensure consistency with the actual temperature, which can be verified by comparing it with a standard thermometer.
2. Check if the micro switch of the automatic temperature control device is sensitive, and replace any malfunctioning parts immediately to avoid exceeding the temperature limit.
3、 Sealing and leak prevention measures
1. Check the welding seams, flange interfaces, and valve sealing of the tank body. If leakage is found, tighten or replace the sealing gasket.
2. When not in use for a long time, empty the medium and dry the inner wall to prevent residual liquid from corroding the tank or heating element.
4、 Electrical safety maintenance
1. Test the grounding resistance monthly (should be less than 4 Ω) to ensure a secure connection of the grounding wire and prevent the risk of leakage.
2. The control cabinet needs to be kept dry and ventilated to avoid dust accumulation affecting heat dissipation, and the wiring terminals should be regularly tightened to prevent loosening.
5、 Maintenance of medium circulation system
1. If thermal oil is used as the heating medium, the viscosity and acid value of the oil should be tested every 3-6 months. If it deteriorates severely, the system should be thoroughly replaced and cleaned.
2. Lubricate the bearings of the circulating pump every 5000 hours and shut down for maintenance in case of abnormal response to prevent uneven heating caused by jamming.
6、 Daily operation standards
1. Before starting, confirm that the cooling water circulation is normal (if equipped with a cooling system) to avoid dry burning and damaging the heating elements.
2. When the device is restarted after a long period of inactivity, it should be gradually heated up to the operating temperature to avoid thermal shock.
Strictly follow the equipment manual during maintenance, and non professionals are not allowed to modify control parameters or disassemble core components without authorization.