Schischek actuators are designed for safe operation in explosive environments and meet the strict requirements of ATEX directives. With various product lines and variants, they offer solutions for a wide range of applications, from standard industrial equipment to specific fire safety requirements. Each actuator model is identified by a unique designation that provides detailed information about its functions and specifications.
**Difference between the ExMax, RedMax, and InMax product lines**:
- **ExMax** – A series of actuators intended for use in explosive environments, certified for zones 1, 2, 21, and 22. These actuators are suitable for a wide range of applications in industries where a high level of protection is required.
- **RedMax** – A series of actuators designed for use in explosive environments, certified for zones 2 and 22. These actuators are ideal for applications where reliability and safety are required in less demanding zones.
- **InMax** – A series of actuators intended for use in safe (non-Ex) environments. These actuators are suitable for standard industrial applications where explosion protection is not required.
**Structure of Schischek actuator designations and their significance**:
The designation of Schischek actuators consists of several parts that describe key features and functions:
1. **Product line** (e.g., ExMax, RedMax, InMax)
2. **Torque** (e.g., 5.10, which indicates 5 Nm or 10 Nm depending on the model)
3. **Type of control and function**:
- **Y** – Continuous control with an analog signal (0–10 V or 4–20 mA)
- **S** – Includes auxiliary switches for position indication
- **F** – Fail-safe function that automatically closes the damper in the event of a power failure
- **BF** – Special designation for actuators intended for controlling fire dampers, meeting strict requirements for safe closure and protection against the spread of fire and smoke
**What is a fail-safe function?**
The fail-safe function is a safety mechanism that ensures the actuator automatically closes the damper or valve in the event of a power failure. This is crucial to prevent the spread of flammable substances or air into hazardous areas. In an emergency situation, the device remains in a safe state, thereby minimizing the risk of explosion or fire.
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