---
kind: "section"
citation: "30 C.F.R. § 77.314"
title: "30"
number: "77.314"
heading: "Automatic temperature control instruments."
url: "https://uscodex.org/cfr/30/77.314"
---

# §77.314. Automatic temperature control instruments.

- (a) Automatic temperature control instruments for thermal dryer system shall be of the recording type.
- (b) Automatic temperature control instruments shall be locked or sealed to prevent tampering or unauthorized adjustment. These instruments shall not be set above the maximum allowable operating temperature.
- (c) All dryer control instruments shall be inspected and calibrated at least once every 3 months and a record or certificate of accuracy, signed by a trained employee or by a servicing agent, shall be kept at the plant.

## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 36 FR 9364, May 22, 1971, unless otherwise noted.