How to Troubleshoot Common Failures of 25mm Large Diameter Cartridge Heater

A 25mm big diameter cartridge heater is a common core heating element in industrial production. But because of long-term use, bad use, or environmental variables, the heater may often break down in several ways, such not heating up, not heating up enough, short circuiting, or burning out. These problems not only slow down production, but they also make upkeep more expensive. In truth, most of the problems that happen with 25mm big diameter cartridge heaters may be fixed easily. The 25mm big diameter model is a typical type of cartridge heater with a reasonably straightforward structure. Learning how to handle minor problems can help businesses get back to work quickly.

The 25mm large diameter cartridge heater not heating up is the most typical problem. The first thing to do when you have this problem is to check the power source. You need to check that the power supply voltage is normal, that the power switch is on, and that the power cord isn't broken or loose. The next step is to check the heater's lead wires if the power supply is working. The lead wires could be broken or the section that connects them could be loose, which would make the connection bad. Based on experience, the lead wires of the 25mm big diameter cartridge heater can be easily broken by heat or outside force. This is why it is important to check that the lead wires are intact and that the connection is strong. If the lead wires are broken, they need to be replaced right away. If the connection is loose, it needs to be tightened.

The heater may be the problem if the power source and lead wires are fine. The insulating material may be old and short-circuited, or the internal resistance wire may be burnt out. You can use a multimeter to measure the heater's resistance right now. If the resistance is infinite, the resistance wire is burnt out. If the resistance is zero, there is a short circuit inside the heater. In this instance, the heater can't be fixed and needs to be replaced with a new cartridge heater with a 25mm large diameter. When measuring the resistance, it's important to cut off the power to avoid getting shocked.

Another common problem is that the 25mm large diameter cartridge heater doesn't get hot enough. There are mainly three reasons why this happens. First, the heater doesn't have enough power to meet the heating needs. You need to either get a heater with more power or add more heaters at this time. Second, the space between the heater and the hole where it is installed is too big, which makes it hard for heat to move. The space between the 25mm big diameter cartridge heater and the hole where it will be installed should be between 0.003 inches and 0.008 inches. Adding heat-conducting paste or reprocessing the installation hole can fix the problem if the gap is too big. Third, carbon deposits or residues on the heater's surface make it harder for heat to move. Right now, the heater needs to be taken out and cleaned, and the hole where it was installed should also be cleaned to make sure the heat moves well.

Another common problem with 25mm large diameter cartridge heaters is that they short circuit. Moisture getting inside the heater, damage to the sheath, or the insulation material being old are the main causes of short circuits. If there is a short circuit, the circuit breaker will trip, and the heater won't work right. Right now, you need to inspect the heater's end seal, the sheath, and the installation hole to see whether there is any moisture in it. If the end seal is broken, it has to be fixed; if the sheath is broken, the heater needs to be replaced; and if there is moisture in the installation hole, the hole needs to be dried before the heater can be put in. Also, the section that connects the lead wire should be checked to make sure that moisture or corrosion doesn't produce a short circuit.

Another common problem with the 25mm large diameter cartridge heater is that it burns out. This is usually because of too much power density, bad installation, or using it for a long time in an open space. Based on what I've seen, the power density of the 25mm large diameter cartridge heater shouldn't be more than 7 W/cm². The heater will overheat and burn out if the power density is too high. The heater can also overheat if it is not installed correctly, as if there is not enough space between the heater and the hole it is supposed to fit into. Also, operating the heater in an open space for a long time without good heat conduction will also cause it to burn out. To prevent this failure, you need to choose the heater with the right power density, learn how to install it correctly, and not use it in an open space for a long period.

In short, the most typical problems with 25mm big diameter cartridge heaters include not heating, not heating enough, short circuits, and burnout. Most of these problems can be fixed by examining the power supply, lead wires, installation gap, and heating surface, which are all easy things to do. Regular maintenance and proper use can greatly lower the number of failures. If you can't fix a complicated problem on your own, it's best to call a professional maintenance person or the manufacturer for help. Professional technical assistance can help businesses fix problems quickly and make sure that the 25mm big diameter cartridge heater works properly all the time.