The radiator makes unbearable noises throu out the night, which drives her insane. We think that this is due to air pockets in the pipes, we can hear crackling and water drops.
The heating system is common to the whole building, and I cant turn off hot water.
How do i open this shit
Best bet short term is to rig something that dulls the noise. A few insulated panels would do, so long as the heat isn’t too intense, but will have the unfortunate effect of reducing the heat to your residence, so you’ll need to augment that somehow. If there’s air in the line, then it’s probably not working to its fullest potential anyway.
Long term, I agree with everyone else. Have the super hire a professional. This is not one you want to DIY, especially while it’s operational. I’ve done carpentry, wiring and plumbing. I’d never touch steam, doubly so while it’s running.