How do you bleed your radiators?

I'm an expert in home maintenance with a focus on plumbing and heating systems. When it comes to bleeding radiators, it's a common task that can help improve the efficiency of your heating system. Here’s a step-by-step guide on how to bleed your radiators:

### Step 1: Diagnose Your Radiator
Before you start, it's important to ensure that your radiator actually needs bleeding. A common sign is that your radiator is cold at the top and hot at the bottom, indicating that air is trapped inside.

### Step 2: Find a Radiator Key
You'll need a radiator key to open the bleed valve. If you don't have one, they can be easily purchased at a hardware store. The key should fit snugly into the bleed valve.

### Step 3: Turn Off Your Heat
For safety, turn off your heating system before you start. This will prevent any accidental burns or damage to the system.

### Step 4: Open Your Radiator's Valves
Locate the valves on your radiator. There should be a larger valve for the flow of water and a smaller one for air, known as the bleed valve. You'll need to open the bleed valve.

### Step 5: Catch Drips from the Valve
Place a cloth or container under the bleed valve to catch any water that comes out. This will keep your floor clean.

### Step 6: **Wait for Water to Squirt Out of the Bleed Valve**
Once you've opened the bleed valve, you should hear a hissing sound as air escapes. Wait until you see water squirting out consistently, which indicates that the air has been fully expelled.

### Step 7: **Repeat This Process on All the Radiators in Your House**
After you've successfully bled one radiator, move on to the next. It's important to do this for all radiators to ensure that your heating system operates efficiently.

### Step 8: Check Your Boiler's Pressure Level
After bleeding all the radiators, check the pressure level on your boiler. It should be between 1 and 1.5 bar for most systems. If it's too low, you'll need to refill it.

Remember, if you're not comfortable performing these tasks or if you encounter any issues, it's always best to call a professional plumber.

Now, let's move on to the translation:

### 如何放掉散热器中的空气

作为一名专注于管道和供暖系统的家居维护专家，我可以为您提供放掉散热器中空气的详细指南：

### 第1步：诊断您的散热器
在开始之前，重要的是要确保您的散热器确实需要放气。一个常见的迹象是散热器顶部冷而底部热，这表明内部有空气被困。

### 第2步：找到散热器钥匙
您需要一个散热器钥匙来打开排气阀。如果您没有，可以在五金店轻松购买。钥匙应该能够紧密地插入排气阀。

### 第3步：关闭您的暖气
为了安全起见，在开始之前请关闭您的加热系统。这将防止任何意外烫伤或对系统造成损害。

### 第4步：打开散热器的阀门
找到散热器上的阀门。应该有一个较大的阀门用于水流，还有一个较小的用于空气的排气阀。您需要打开排气阀。

### 第5步：接住从阀门滴下的水滴
在排气阀下方放置一块布或容器来接住流出的水。这将保持您的地板干净。

### 第6步：等待水从排气阀喷出
一旦您打开了排气阀，您应该会听到空气逸出时的嘶嘶声。等到您看到水连续喷出，这表明空气已被完全排出。

### 第7步：**重复这个过程对您家中的所有散热器进行操作**
在成功放掉一个散热器的空气后，继续下一个。对所有散热器进行放气非常重要，以确保您的加热系统高效运行。

### 第8步：检查您的锅炉压力水平
放完所有散热器的空气后，检查锅炉的压力水平。对于大多数系统来说，它应该在1到1.5巴之间。如果太低，您需要重新加满。

记住，如果您不舒服执行这些任务或遇到任何问题，最好还是请专业水管工来处理。

Use a radiator key, 1/4-in. 12-point socket, or a flat screwdriver (depending on your valve type) and slowly turn the valve counterclockwise until water starts dripping out. This will release trapped air and let hot water into the cold fins. While you're at it, you should repeat the process with your other radiators.