Sometimes they occur because of maintenance problems at treatment plants.

"I was really disappointed by the maintenance problems," he said.

However, the first factory stopped production due to maintenance problems.

As with almost any device, the addition of moving parts leads to an increase in potential maintenance problems.

(You can see the maintenance problem with 60 of just about everything).

As the flowers decay, they simply fall to the ground and do not create a significant maintenance problem.

Both changes caused significant maintenance problems in the long run for all the ships.

So far there have been no major maintenance problems with the aircraft.

"I usually tell him there's a maintenance problem or radar's down."

He knew a chain would prefer dealing with a single company for its maintenance problems.