When are sliding feet checked to verify movement?

Sliding feet are critical components in the operation of equipment such as boilers, as they allow for necessary movement during temperature changes and operational adjustments. To ensure they function correctly, they must be checked at several key times: before light off, during boiler warm up, and after the boiler is placed online.

Checking the sliding feet before light off ensures that the equipment is ready for operation and that there are no obstructions or issues that could affect performance. During the boiler warm-up phase, this check becomes even more crucial as the equipment is subjected to temperature changes, which can cause expansion and affect the movement of the feet. Finally, after the boiler is placed online, monitoring the sliding feet helps ensure that everything is functioning as intended under operating conditions.

This comprehensive approach to checking the sliding feet allows for early detection of potential problems, promoting safety and efficiency. By conducting these checks at these critical stages, the integrity of the system is maintained, which is why this choice is the correct one.