What will happen if a bi-metal thermostat or diastat is not fastened tightly to the surface?

When a bi-metal thermostat or diastat is not fastened tightly to the surface it is supposed to measure, it can lead to erratic behavior. This occurs because the device relies on consistent contact with the surface to accurately gauge temperature changes. If the thermostat is loosely attached, it may not react appropriately to the temperature of the surface, leading to fluctuations in readings. This can result in the control system responding inconsistently, which may cause the equipment to cycle on and off unpredictably or maintain improper temperature settings.

The integrity of the connection to the surface is crucial for accurate temperature detection. A secure attachment ensures that the thermostat can effectively respond to temperature variations. If it were to shut down completely or work normally, it wouldn’t address the underlying issue of its sensitivity to surface contact. Accurate temperature readings depend on proper installation and secure contact with the measuring surface, reinforcing the importance of tight fastening to avoid erratic performance.