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Diagnosis of Malfunctions: Air Actuator Leak and Filter Alarms in Pneumatic Systems

Central air conditioning and heating systems in the designated building are regulated through a Direct Digital Control (DDC) interface, linked to pneumatic actuators located offsite. These actuators control the opening and closing of heating and cooling valves for a substantial portion of the...

Detecting and Resolving Issues in Pneumatic Actuators and Filters: Leaks and Alarm Signals
Detecting and Resolving Issues in Pneumatic Actuators and Filters: Leaks and Alarm Signals

Diagnosis of Malfunctions: Air Actuator Leak and Filter Alarms in Pneumatic Systems

In the world of energy management, every penny saved counts. That's where Cimetrics comes in, offering a fault detection and diagnostics (FDD) service designed to optimise HVAC systems and reduce energy costs.

This service works by continuously monitoring system performance, automatically identifying faults or inefficiencies, and providing actionable insights to facility managers. By adopting a proactive approach, timely maintenance, improved system operation, and energy savings become achievable.

Continuous Monitoring

Cimetrics FDD integrates with building automation systems to collect data from HVAC equipment such as chillers, boilers, air handlers, and controls. This continuous monitoring allows for a comprehensive understanding of the system's performance.

Automated Fault Detection

Using advanced analytics and algorithms, the service detects deviations from normal performance patterns that indicate equipment faults, sensor issues, control setpoint problems, or operational inefficiencies.

Root Cause Diagnostics

Beyond flagging faults, Cimetrics FDD helps diagnose the underlying causes by correlating multiple data points, enabling more precise troubleshooting.

Actionable Recommendations

The platform delivers prioritised recommendations for corrective actions, helping facility managers address issues before they escalate.

Energy Savings and Cost Reduction

By identifying and fixing faults like stuck dampers, sensor drifts, improper setpoints, or inefficient equipment operation, Cimetrics FDD reduces wasted energy. Optimised performance minimises equipment runtime and peak demand charges.

Improved Comfort and Equipment Longevity

Enhanced diagnostics ensure HVAC systems maintain occupant comfort levels and extend equipment life by avoiding stress from faulty operations.

Case Study Example

A large commercial office building faced high energy bills and frequent occupant complaints of inconsistent temperature in certain zones. Cimetrics was deployed to connect with the existing Building Management System (BMS) to monitor HVAC equipment and zone conditions.

The service detected a stuck valve causing excessive heating in one zone, increasing load on the cooling system. It also identified sensor calibration errors leading to incorrect temperature readings and poor control performance. Furthermore, it found improperly configured control sequences causing simultaneous heating and cooling.

Maintenance teams fixed the stuck valve, recalibrated faulty sensors, and adjusted control sequences to eliminate simultaneous heating and cooling. The results were impressive: energy consumption for HVAC dropped by 15% in the first 3 months, occupant comfort complaints decreased by over 60%, and extended equipment life was expected due to reduced wear and tear.

In summary, Cimetrics’ fault detection and diagnostics service helps optimise HVAC system performance by identifying problems early, guiding efficient corrective actions, and enabling significant energy and cost savings, as demonstrated in this commercial building case study.

In another instance, a pneumatic leak in the HVAC systems of a facility caused actuators to not open and close correctly. Despite not being detected on-site, the fault was detected and reported by Analytika algorithms. Cimetrics worked with the facility's personnel to fix the pneumatic leak, resulting in an annual energy savings of $46,731. The total annual carbon emissions reduction after the solution implementation was 404 metric tons.

By adopting Cimetrics' FDD service, facilities can enjoy optimised HVAC performance, significant energy savings, and extended equipment life, ultimately leading to reduced energy costs.

  1. Cimetrics' FDD service, integrated with finance and technology, offers energy savings and cost reduction in the industry by continuously monitoring HVAC systems, automatically detecting faults, and providing actionable recommendations.
  2. In the world of energy management, the collaboration of technology and finance is essential for facilities looking to optimise HVAC performance, achieve significant energy savings, and extend equipment life, ultimately leading to reduced energy costs, as demonstrated by the annual carbon emissions reduction of 404 metric tons after implementing Cimetrics' FDD service.

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