In which mode should the heat be maintained for a quick start?

Maintaining heat in warm-up mode is essential for a quick start because this setting ensures that the machinery or equipment is prepped and ready to operate at optimal efficiency. When in warm-up mode, the system reaches a suitable operating temperature, allowing for improved performance and reducing wear on components once the operation begins. This is particularly important in mechanical systems where startups can be more taxing on parts if they are not at the appropriate temperature.

In contrast, cold mode would not provide any heat, leading to sluggish startups and potential damage. Idle mode may keep the system running without actively promoting warming, which isn't ideal for a quick start. Shut down mode completely disables the system, making it impossible to engage quickly. Thus, warm-up mode is the best choice for efficiently preparing the equipment for immediate operation.