Dust collecting on the cooling coils of the cryostat may cause the motor to run more slowly.

• A. True
• B. False
• C. Only when humid
• D. Only for certain models

Answer: (B)

Dust on the cooling coils affects heat transfer, not the motor’s speed. When coils are dusty, the system can’t remove heat as efficiently, so the cooling circuit may run longer or harder to maintain temperature, and components can overheat or trigger protection. The drive motor’s speed is set by the device’s control electronics and is not directly governed by the cleanliness of the cooling surface. Humidity or model differences aren’t the deciding factors here. So the statement is not correct.