Gebruik de radiatorknop in plaats van de radiator uit te zetten.

Gebruik is the imperative form of gebruiken (to use).

So the sentence is giving an instruction or command:

• Gebruik ... = Use ...

In Dutch, the imperative is often just the verb stem:

• gebruiken → gebruik
• lopen → loop
• kijken → kijk

So this sentence starts exactly the way many instructions do.

That is normal in Dutch commands.

In an imperative sentence, the subject is usually left out, just like in English:

• Use the radiator knob.
• Gebruik de radiatorknop.

Dutch can include the subject for emphasis or politeness in some cases, but the basic command usually omits it.

So:

• Gebruik de radiatorknop = a normal instruction
• The implied subject is you

Because Dutch normally writes compound nouns as a single word.

Here:

• radiator = radiator
• knop = knob

Together:

• radiatorknop = radiator knob

This is very common in Dutch. English often uses separate words where Dutch uses one compound word:

• toothbrush → tandenborstel
• coffee cup → koffiekop
• radiator knob → radiatorknop

A useful rule: if English has a noun + noun combination, Dutch often turns it into one word.

Because both are de-words in Dutch.

Dutch nouns usually take either:

• de
• or het

These are grammatical categories, and you mostly have to learn them with the noun.

Here:

• de radiator
• de knop
• therefore also de radiatorknop

A helpful detail: in Dutch compounds, the last part usually determines the gender/article. So because knop is a de-word, radiatorknop is also a de-word.

In plaats van means instead of.

It is a fixed expression. You can use it before:

1. a noun
2. or a verb phrase

Examples:

• in plaats van koffie = instead of coffee
• in plaats van te wachten = instead of waiting

In your sentence:

• in plaats van de radiator uit te zetten = instead of turning off the radiator

So the sentence contrasts two actions:

• preferred action: use the radiator knob
• alternative action: turn off the radiator

Because after in plaats van, Dutch normally uses te + infinitive when a verb follows.

Compare:

• in plaats van koffie = instead of coffee
• in plaats van koffie te drinken = instead of drinking coffee

So here:

• in plaats van de radiator uit te zetten

This is similar to how English often uses -ing after instead of:

• instead of turning off the radiator

Dutch does not use an -ing form the way English does, so te + infinitive is the normal pattern here.

Because uitzetten is a separable verb.

The full verb is:

• uitzetten = to turn off / switch off

It has:

• uit = prefix/particle
• zetten = main verb

When a separable verb appears with te, the te goes between the two parts:

• uitzetten → uit te zetten
• aandoen → aan te doen
• opbellen → op te bellen

So:

• correct: uit te zetten
• not correct: te uitzetten

This is one of the most important patterns to learn with Dutch separable verbs.

Not naturally in this sentence, because then the object of uitzetten would be missing.

• de radiator uit te zetten clearly tells you what is being turned off.
• uit te zetten by itself would sound incomplete here.

You could replace the noun with a pronoun if the meaning is already clear:

• Gebruik de radiatorknop in plaats van hem uit te zetten.

But repeating de radiator is often clearer and more natural in instructions, especially when there could be any doubt about what hem refers to.

Yes, uitzetten is a normal Dutch verb for turning something off.

It is used for many things:

• het licht uitzetten = turn off the light
• de tv uitzetten = turn off the TV
• de verwarming uitzetten = turn off the heating

With a radiator specifically, Dutch may also use more precise verbs in certain contexts, such as:

• dichtdraaien = turn closed
• lager zetten = set lower

But in this sentence, de radiator uitzetten is perfectly understandable and natural as the contrasting action.

It is not a full finite clause; it is an infinitive construction.

The main clause is:

• Gebruik de radiatorknop

Then comes a phrase that expresses the alternative:

• in plaats van de radiator uit te zetten

Because zetten is in the infinitive, there is no finite verb form like zet or zette here.

So structurally, the sentence is roughly:

• [Command] + [instead of + infinitive phrase]

This kind of structure is very common in Dutch instructions and advice.