نظام الرش الآلي صالح للعمل تماما.

Because this is a nominal sentence in Arabic. Arabic often says X Y to mean X is Y in the present tense, without using a separate word for is.

So:

نظام الرش الآلي = the automatic sprinkler system
صالح للعمل تماما = fully fit for operation / completely operational

In other words, Arabic does not need a present-tense to be here.

It is the subject of the sentence, called the مبتدأ in Arabic grammar.

The whole phrase means the automatic sprinkler system.

It is made of:

• نظام = system
• الرش = spraying / sprinkling
• الآلي = automatic

So the full noun phrase functions as one unit.

Because it is the first part of an iḍāfa construction, or construct phrase.

Here the phrase is:

نظام الرش

This literally means system of the spraying or more naturally sprinkler system / spray system.

In Arabic, the first noun in an iḍāfa often does not take الـ, but the whole phrase can still be definite if the second noun is definite. Since الرش has الـ, the entire phrase نظام الرش is definite.

So نظام does not need الـ here.

Grammatically, الآلي most naturally describes الرش, because it matches it in definiteness, gender, number, and case.

So the structure is:

• نظام = system
• الرش الآلي = automatic spraying / automatic sprinkler action

Together: system of automatic spraying

In English, we would usually translate the whole phrase more naturally as the automatic sprinkler system.

Because it agrees with the noun it describes, which is الرش.

The word الرش is:

• masculine
• singular
• definite

So the adjective must also be:

• masculine
• singular
• definite

That is why we get الآلي and not a feminine or plural form.

In normal unvocalized Arabic writing, صالح is just the standard spelling. If full case endings were written, it would be:

صالحٌ

It is masculine singular because it agrees with نظام, which is masculine singular.

It is not صالحة because نظام is not feminine.

So صالح here means fit, valid, suitable, or operational, depending on context.

It literally means for work or for operation.

It is made of:

• لِـ = for
• العمل = work / operation / functioning

After words like صالح, Arabic often uses لِـ to show what something is fit or suitable for.

So:

صالح للعمل = fit for operation / ready for use / operational

In this sentence, that is more natural than translating it word-for-word as good for work.

تماما adds emphasis. It means something like:

• completely
• entirely
• fully

So:

صالح للعمل تماما = completely fit for operation
or more natural English: fully operational

It strengthens the statement and makes it more emphatic.

Because adverbs like تماما often come after the word or phrase they modify.

Here it emphasizes the whole idea صالح للعمل.

So the order is very natural:

• صالح للعمل = fit for operation
• تماما = completely

Putting تماما at the end gives a smooth, idiomatic Arabic sentence.

A fully vocalized version would be:

نِظامُ الرَّشِّ الآلِيِّ صالِحٌ لِلْعَمَلِ تَمامًا.

Here is why:

• نِظامُ: nominative, because it is the subject
• الرَّشِّ: genitive, because it is the second noun in an iḍāfa
• الآلِيِّ: genitive, because it describes الرش
• صالِحٌ: nominative, because it is the predicate
• لِلْعَمَلِ: genitive after the preposition لِـ
• تَمامًا: accusative adverbial form

Learners often do not see these endings in normal print, but they are helpful for understanding the grammar.

It is an adjective used as the predicate of the sentence.

The basic pattern is:

[subject] + [adjective]

So:

نظام الرش الآلي = subject
صالح = predicate adjective

Arabic commonly uses adjectives this way, just as English does in sentences like The system is operational.

Yes. Literally, it means fit/suitable for operation or work.

Depending on context, it could be translated as:

• suitable for use
• fit for operation
• functional
• operational

In a technical or maintenance context, operational or fully operational is usually the most natural English choice.

It depends on context.

الرش comes from a root related to sprinkling or spraying. In technical contexts, it can refer to:

• spraying
• sprinkling
• sprinkler action

So نظام الرش الآلي could be understood as:

• automatic spraying system
• automatic sprinkler system

The exact English wording depends on what kind of system is being discussed.

It is pronounced roughly as ar-rashsh.

The final consonant is doubled because the word contains a shadda on ش:

• رَشّ

That means the sh sound is held slightly longer than a single sh.

Also, because ر is a sun letter, the ل of الـ is not pronounced separately, so:

• الرش is pronounced ar-rashsh, not al-rashsh

Yes, that is a very good idea.

Even though it is built from smaller grammatical pieces, in real reading it is useful to recognize it as a unit meaning something like:

automatic sprinkler system
or
automatic spray system

Arabic often builds technical terms this way, using an iḍāfa plus an adjective. Recognizing the whole chunk will make reading much easier.