Fume Hood Controller Owner's Manual

In addition to setting up the purge sequence to effectively handle the exhaust needs, decisions must be made on how to use the information available at the central reporting station. Consult your local Siemens Building Technologies, Inc. representative for more information on central reporting and trending of emergency purge information.

Fail-safe Operation

If the Fume Hood Controller or one of its accessories fails, then a failure mode sequence will be initiated.

Fume Hood Controller

If the Fume Hood Controller power fails, the exhaust flow control device will go to the full open position. Since there would be no power to the controller, no LEDs or display will be available on the ODP.

NOTE: If the power fails to both the exhaust fan and the controller, there will be no indication except for the absence of the noise that the air makes during normal operation.

ODP

If the ODP fails, the controller will continue to control the fume hood face velocity. However, no display or audible alarming will be available.

Differential Pressure Transmitter

If the differential pressure transmitter fails, the controller will control the exhaust flow control device to the fully open position. The ODP will display FFF and GENERAL FAILURE.

Electronic Actuator Assembly

If the electronic actuator or interface board fails then alarms are displayed on the ODP indicating unsafe operating conditions.

Pneumatic Actuator

If the actuator fails due to a leak, then the exhaust flow control device will go to the full open position. Alarms will be displayed on the ODP indicating unsafe operating conditions.

AO-P Module

If the AO-P module fails, alarms will be displayed on the ODP indicating unsafe operating conditions.

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Siemens 125-5033 owner manual Fail-safe Operation
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125-5033 specifications

The Siemens 125-5033 is a highly regarded circuit breaker in the world of electrical engineering and power distribution. Known for its robust design and versatile applications, this device offers a host of features that make it suitable for both commercial and industrial use.

One of the main features of the Siemens 125-5033 is its compact size. This allows for easy integration into existing systems without occupying excessive space, making it an ideal choice for facilities with limited room for electrical infrastructure. Its ability to handle high current ratings, typically around 125 amps, ensures that it can support a variety of electrical loads, making it versatile across different applications.

The Siemens 125-5033 employs advanced technologies, such as thermal-magnetic trip mechanisms. This allows for reliable protection against overloads and short circuits. The thermal component of the trip mechanism is designed to react to sustained overcurrent conditions, while the magnetic component responds instantaneously to short circuits. This dual-functionality ensures that the circuit breaker can effectively protect both the conductors and the connected equipment.

In terms of safety, the Siemens 125-5033 comes with advanced arc suppression technologies that minimize the risk of arcing during the circuit interrupting process. This not only enhances the longevity of the breaker but also safeguards personnel working near electrical installations. Additionally, the device features a clear, accessible reset mechanism, making it user-friendly and easy to operate in case of an interruption.

Another notable characteristic of the Siemens 125-5033 is its built-in ground fault protection option. This capability provides an added layer of safety, ensuring that any ground faults are detected and addressed promptly. It is particularly useful in environments where moisture or dust can compromise electrical safety.

The Siemens 125-5033 also boasts compatibility with various monitoring and control systems, enabling seamless communication and integration into smart building management systems. This feature allows facility managers to monitor power usage, identify potential issues, and optimize energy consumption effectively.

Overall, the Siemens 125-5033 circuit breaker is a reliable, safe, and technically advanced choice for those looking to enhance their electrical systems. Its compact size, dual-trip mechanism, ground fault protection, and compatibility with modern technologies make it a valuable asset for any facility looking to improve its electrical safety and efficiency.
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