1. Lifespan of heating rod: It is recommended to replace ordinary heating rods after about two years, because the internal bimetallic strip may malfunction after prolonged use. After all, they are not very expensive, so replacing one gives you peace of mind and avoids unnecessary losses.
2. Which is better, glass or stainless steel? It's hard to say; each has its own advantages. Generally, glass ones are cheap (except for some special processes), widely used, and can be applied in various aquariums. The disadvantage is that they are easy to break. If used in large fish tanks, they must be equipped with a protective cover to prevent fish from breaking them. The advantages of stainless steel are obvious: sturdy, durable, and visually appealing. However, the disadvantage is that they cannot be used in certain corrosive environments, such as seawater tanks.
3. Quality: Actually, domestic products are sufficient; there is no need to buy imported ones. Brands like Jiabao, Chuangxing, and Yinsheng are decent. I tend to support domestic products. The quality of heating rods can be distinguished in many ways; expensive ones are not necessarily reliable. Some expensive ones use different glass and heating wires, and some have anti-explosion features to prevent glass shattering. If you are not careless, these features may not be useful to you. This greatly affects the price of heating rods, but if the bimetallic strip fails to trip, high-end heating rods can cook fish soup faster. As for stainless steel ones, many use electronic temperature control, with a thermistor detecting water temperature, then controlling a relay or high-power thyristor to switch the heating tube on and off. This accuracy is higher than that of ordinary bimetallic strips, but if the thermistor or thyristor malfunctions, the heating speed will be faster than that of ordinary glass ones.
BJ22 Bolt-Type Heating Rod
1. The control cabinet housing must be reliably grounded.
2. The phase wire and neutral wire between the bolt heater plug and the cabinet socket must be correctly connected; misconnection is strictly prohibited.
3. When installing or removing the bolt heater, the power switch must be turned off. The control cabinet's voltage adjustment and indication should be at the minimum position; low-voltage control cabinets are strictly prohibited from switching voltage under load.
4. When connecting loads, pay attention to the balance between the three phases.
5. If connectors are damaged, they must be replaced with identical ones.
