Panel Builder US

PBUS-27-MACC-MechanicalElectricalProblems-400.jpg

May 11, 2021

Building systems, such as HVAC, consist of thousands of components that work together to keep occupants comfortable and safe. Preventative maintenance helps ensure all these pieces stay in good condition, through inspecting and checking for worn parts.

However, inspections can’t find every issue. Even with a detailed maintenance program in place, you may not uncover some problems until it’s too late. The solution? Using a building maintenance system to reveal hidden issues.

Here are five problems that a maintenance system can “see” that you can’t.

1. Dampers Not Opening/Closing All The Way

When dampers fail to open or close completely, it affects their operation but doesn’t necessarily cause a system malfunction. Unless you’re specifically checking dampers, you won’t find this problem without the help of a building automation maintenance system.

A maintenance system tracks conditions over time to look back at past readings—if they begin deviating from expected values it indicates a potential issue. For example, if normal operations require dampers to be 30% open and they’ve been trending closer to 50% to reach the same conditions, you know something’s off. Problematic dampers left unfixed will increase energy costs and eventually cause equipment damage.

2. Sensor Drift

Sensor accuracy shifts as time goes by, and readings become less and less reliable. Simply looking at a sensor won’t reveal that it needs recalibration because sensor drift happens slowly over time.

An astute technician or facility manager with an eye for unusual output can spot sensor drift using data from a building automation system (BAS). On a heat exchanger, for instance, the temperature going in is typically higher than coming out. If the output sensor is drifting, it may show a lower reading than the input—which doesn’t make sense. Recalibrating drifted sensors keeps equipment running to the proper setpoints and provides accurate feedback so a BAS can keep a building comfortable.

3. Blown VAV Box Fuse

A VAV (variable air volume) box can blow a fuse in a multi-stage electric reheating system without drawing any attention. That’s because even with a blown fuse in the VAV box’s second or third stage, heating continues, making this issue difficult to detect.

A blown VAV box fuse won’t appear in BAS readings, but the result of the blown fuse will. You’ll know something’s amiss when heating takes longer than usual. If raising the heat typically takes 30 minutes, and the system now runs for an hour and a half without reaching its setpoint, there’s a problem. Unaddressed, a blown VAV box fuse will overwork other components, ultimately shortening equipment lifespan.

4. Detached Electrical Contacts

Electrical connections coming detached from contactors can lead to lights not coming on when they’re supposed to—or staying on when they’re supposed to be off. For something like parking lot lights, you’ll notice when they don’t come on at night, but not necessarily when they’re on during the day.

A BAS that displays energy use will be able to point a technician to potential electrical problems. Lighting systems with increased energy use during times that aren’t typical may indicate an electrical issue, such as detached or incorrect electrical contacts. If left uncorrected, improper electrical connections can cause safety issues, unnecessary energy waste, and increased operating costs.

5. Equipment Nearing Failure

Machinery begins to break down as it nears the end of its useful life and will draw more energy than usual to compensate for weakened or worn parts. An older fan, for example, may need more power to achieve normal operation if its bearings are locking up.

An increased power draw indicates a problem, and an experienced building automation technician can view maintenance readings and detect equipment running on the edge of its amp capacity. Preventative maintenance combined with expert BAS analysis can reveal components in need of repair (or replacement), so they can be fixed before equipment fails.

BAS Maintenance Is Critical To Facility Management

Many organizations put time, effort, and resources into maintaining their HVAC equipment but neglect to maintain their building controls. As a key resource for detecting issues and zeroing on maintenance needs, it’s important to include your building automation system as part of a comprehensive facility maintenance plan.

Important_Links_Bar.jpg

https://info.midatlanticcontrols.com/blog/5-problems-maintenance-system-can-see

 


 Network Infrastructure Featured Product Spotlight

PB 10 Panduit 400This webinar presented by Beth Lessard and Keith Cordero will be highlighting three Panduit solutions that will optimize network equipment and cabling to ensure that your spaces are efficiently and properly managed to support ever-evolving business needs of today and beyond. Products that will be featured include PanZone TrueEdge Wall Mount Enclsoure, Cable Managers, and Adjustable Depth 4-Post Rack.

REGISTER HERE

 

 

 

 


 

Editor's Pick: Featured Product News


PBUS-41-Automation-DURApulseGS10-400.jpg

AutomationDirect has added the DURApulse GS10 series as their newest and most affordable line of micro AC drives. GS10 drives are available in a variety of voltage and horsepower ratings, including single-phase 120VAC models in sizes from ¼ to 1 hp, single-phase 230VAC models from ¼ to 3hp, three-phase 230VAC models from ¼ to 7.5 hp, and 460VAC three-phase units from ½ to 10 hp.

Even with the low price, these drives offer advanced features such as sensorless vector control, PID control, multiple motor support for induction motors, as well as the ability to control permanent magnet motors.

Read More


Sponsored Content

Achieve Industrial Control Panel Certification With UL

G1164993357-HVAC-System-200x150.jpg

UL’s Industrial Control Panel Shop program provides flexibility in certification of mass-produced and custom-designed industrial control panels. We share our expertise through technical training, workshops and advisory services focused on the needs of the ICP builders. Achieve UL Certification UL 508A while allowing for versatility in panel design. Contact us today to get started.

Learn more HERE.

 


 

Products for Panel Builders

  • Prev
The new XTV terminal blocks can accommodate the direct insertion of all conductor types: ferruled, ...
You can't make the right decisions without the right data. If you're manually measuring temperature ...
TTI, Inc. is stocking the Vishay RER Military, High-Reliability, Chassis-Mount Wirewound Resistor. ...
Increase performance and save space with Weidmuller's Hydraulic Magnetic miniature circuit ...
Ethernet-APL enables a new dimension in field communication: complete asset ...
The new Allen-Bradley 42EA RightSight S18 and 42JA VisiSight M20A photoelectric ...
nVent Electric plc has recently launched the nVent HOFFMAN RackChiller CDU800 Coolant Distribution ...
Positronic MACH-D D-Sub Connectors are made with finely machined shells that provide excellent EMI ...
LÜTZE's Compact power supplies are durable DC 24 V power packs with an efficiency level in excess ...
Installation and maintenance procedures in process plants should be carried out precisely and ...

ditor's Pick: Featured Article


The new SXN-75 high-brightness water-resistant 75” LCD monitor is the ideal solution for industrial facilities. It will enable you to provide safety information, scheduling, goals, yields, production data and other relevant information to personnel anywhere in the plant.

The SXN-75 is designed to withstand the many challenges of a factory floor environment. The rugged water-resistant and corrosion-resistant aluminum enclosure is rated IP54. It withstands dripping, splashing or sprayed water and other liquids. It is also maintenance-free; no need to ever clean or replace vents, fans or filters.

Read More

Article Feature - Monthly Industry Focus


PBUS-41-Mouser-TECOnnectivityMezalok-400.jpg

Mouser Electronics, Inc. now stocks Mezalok High-Speed Low-Force (HSLF) XMC connectors from TE Connectivity. Designed specifically for mezzanine applications, the Mezalok HSLF XMC connectors meet qualification requirements of legacy Mezalok high-speed connectors, with significantly reduced mating and unmating force.

TE’s Mezalok HSLF XMC connectors, available from Mouser Electronics, are capable of data rates up to 32 Gbps, offering improved signal processing for embedded computing interconnects in mezzanine applications. The connectors feature a reduction in required mating and unmating force—by 32% and 47%, respectively—and meet robust standards listed in VITA 47 and VITA 72.

Read More

News for Panel Builders

News for Panel Builders
  • Prev
ABB has recently announced it has signed an agreement to purchase Siemens’ low voltage NEMA motor ...
Rockwell Automation, Inc. is pleased to announce that registration is now open for Automation ...
Allied Electronics & Automation is pleased to announce an agreement to acquire Risoul y Cia, ...
Rittal North America recently announced the expansion of their Houston, TX warehouse and ...
Graybar has recently announced that it has completed the acquisition of Walker Industrial Products, ...
The Automation Fair event offers an immersive experience showcasing the value and power of our ...
CDM Electronics has announced an agreement with Amphenol Nexus Technologies to stock and distribute ...
On July 20, Carrollton, Ga.-based Southwire Company celebrated the opening of its new office in ...
Since July 30th, in addition to updated data EPLAN are very pleased to announce the following new ...
Allied Electronics & Automation offers around 50,000 ready-to-ship material handling & ...