Precautions and key points for maintenance of laboratory stainless steel reactors

### Precautions for Heating and Cooling a Reactor

1. **Avoid Rapid Temperature Changes**:

- Rapid heating or cooling can cause thermal stress, potentially damaging the reactor. Gradual temperature adjustments are recommended to ensure safety and equipment longevity.

2. **Sealing and Installation**:

- When installing the reactor lid, ensure the sealing surfaces of the reactor body and lid do not collide. Place the lid carefully in its fixed position and tighten the main nut diagonally and symmetrically in multiple steps to achieve an even seal.

3. **Threaded Connections**:

- For forward and reverse nut connections, only rotate the nuts; the arc sealing surfaces must not rotate relative to each other. Apply lubrication to all threaded connections during assembly.

4. **Needle Valve Seal**:

- Gently rotate the valve needle to compress the sealing surface for an effective seal. Avoid excessive force to prevent damage.

5. **Rotor Operation**:

- Manually rotate the rotor to check for smooth operation before use.

6. **Controller Placement and Environment**:

- Place the controller flat on the operating table in an environment with a temperature of 10–40°C and relative humidity below 85%. Ensure the surroundings are free from conductive dust and corrosive gases.

By following these precautions, the reactor can operate efficiently and safely during heating and cooling processes.