Frequently Asked Questions (FAQs)
Who provides Maintenance, Testing and Engineering Services in New York City, New Jersey, Boston, and Washington DC?
PRETECT provides testing, maintenance, engineering, reliability, quality assurance, commissioninng, and TAB services. Contact us today to schedule a consultation and ensure your system is always performing at its best.
To learn more, download our full capabilities brochure:
The MACHINE MDs ARE IN THE BUILDING
Does PRETECT provide vibration analysis services in NYC and Manhattan?
Yes, we have over 30 years of experience in vibration analysis, PRETECT is a trusted leader in machinery health monitoring and the diagnosis and correction of vibration issues in rotating equipment and structures.
Who provides Motion Amplification® services in Boston, New York City, Manhattan, Long Island, New Jersey, Washington D.C. and sorrunding areas?
PRETECT is trained, certfied and equipped with a team of experts that provide this service. Contact us today to schedule a consultation and ensure your system is always performing at its best.
Why should we choose PRETECT for testing services?
Just like your annual check-up with a doctor, PRETECT Machinery Health Experts provide a comprehensive Examination, Diagnosis, and Treatment for your building assets. Our mission is to test your assets, ensuring they operate at 100% peak performance, 24/7, 365 days a year.
Is PRETECT an experienced service provider?
Yes, PRETECT has 35+ years mechanical systems, diagnostics, troubleshooting, vibration analysis, infrared thermography, Motion Amplification®, precision laser alignment, VFD Maintenance and Troubleshooting, and much more!
Is PRETECT a member of any unions in New York City or New Jersey?
Yes, PRETECT is proud to be a member of these outstanding unions: International Union of Operating Engineers 68, Steamfitters 638 and International Union of Operating Engineers 94
Do you have any case studies?
Yes, visit Case Studies on our website to see various applications.
Can I make a service request online?
Yes, visit Online Service Request Form to schedule services today.
What Is NYC Article 320 and how Can PRETECT help?
Over two-thirds of New York City's Greenhouse gas emissions come from buildings. Failure to meet Article 320 requirements may result in costly violations. Mechanical systems are a major driver of building energy use and greenhouse gas emissions. Owners must report annual emissions, obtain RDP certification, and maintain supporting documentation. PRETECT can help compile the mechanical system data and supporting documentation needed for Local Law 97 reporting. We use advanced vibration analysis, and video based technologies to evaluate and document mechanical systems condition, faults and performance.
Learn more about Article 320 at https://www.nyc.gov/assets/bui...
Advanced Vibration Analysis:
Motion Amplification® and Vibration Analysis
What is Motion Amplification®?
It's a non-contact and video-based Vibration Analysis and Fault Visualization service that combines high speed cameras, patented vibration visualization technology, software processing algorithms, analysis and reporting. We process and analyze the vibration data, and videos are amplified to visually show you vibration faults.
How does Motion Amplification® compare to vibration analysis?
Traditional vibration analysis using data collectors and single point accelerometers can narrow down a fault to an area, however with Motion Amplification we use the cameras 2.3 millions sensors to VISUALLY show you a fault down to a specific fault (loose anchor bolts, cracked mounting bases, misalignments, and many more other fault types).
To learn more, download Motion Amplification Brochure
What Is Vibration Analysis?
Vibration analysis is a predictive maintenance technique that measures machine vibration to detect developing mechanical problems before they lead to equipment failure or unplanned downtime. By monitoring vibration trends over time, facility maintenance managers can schedule repairs before failures occur, improving reliability and reducing maintenance costs. Vibration analysis helps identify: Bearing failures, Shaft misalignment, Rotor imbalance, Mechanical looseness , Resonance , Belt defects, Gear wear and Coupling issues.
How does Vibration Analysis work?
Vibration analysis uses sensors mounted on equipment to measure vibration levels and frequencies. The data is analyzed to identify specific mechanical faults based on characteristic vibration patterns. Experienced PRETECT analysts interpret these patterns to determine both the severity and probable cause of machinery problems.
How often should Vibration Analysis be performed?
The frequency of vibration analysis depends on equipment criticality, operating conditions, and failure history. Critical assets may require continuous monitoring or monthly inspections, while less critical equipment may only need quarterly or semiannual testing. Facilities that trend vibration data over time can detect gradual deterioration and schedule maintenance before failures occur.
Maintenance Strategies:
Preventive (PM) and Predictive Maintenance (PdM) and Root Cause Analysis
What Is Predictive Maintenance (PdM)?
Unlike reactive maintenance, predictive maintenance focuses on monitoring equipment health rather than waiting for failures to occur. By identifying problems early, facilities can schedule repairs during planned outages rather than responding to unexpected breakdowns.
Contact PRETECT for PdM services which include:
• Vibration analysis
• Motion Amplification®
• Infrared thermography
• Ultrasound testing
• Oil analysis
• Motor circuit analysis
What Is the difference between Predictive Maintenance (PdM) and Preventive Maintenance (PM)?
Preventive maintenance (PM) is time based maintenance and performed on a fixed schedule regardless of equipment condition, while predictive maintenance (PdM) uses data driven technologies to determine when maintenance is actually needed. Most modern facilities in NYC combine both strategies to maximize equipment reliability.
Why should commercial and industrial buildings perform root cause analysis instead of simply replacing equipment?
Replacing equipment without understanding why it failed often results in repeated failures. Root cause analysis identifies the underlying mechanical, structural, or operational issues Root cause analysis combines multiple diagnostic technologies to determine why failures continue to occur and recommend permanent corrective actions.
Machinery Vibration and Causes of Failures
What are the early warning signs of machine failure?
Increasing vibration, abnormal noise, rising temperatures, excessive movement, lubricant contamination, and declining performance are among the earliest indicators of developing machine failure and wear. Routine condition monitoring allows maintenance teams to detect these warning signs before they failand and cause downtime.
What Are the Most Common Causes of Machine Vibration?
Most machine vibrations are caused by imbalance, misalignment, bearing defects, mechanical looseness, resonance, soft foot, belt issues, electrical problems, or improper installation. Accurately identifying the true cause often requires multiple diagnostic technologies, including vibration analysis, Motion Amplification®, and root cause analysis.
Why should elevators be tested for Vibration?
Elevator vibration can result in poor ride quality, passenger complaints, premature wear, and increased maintenance costs. Common causes include worn bearings, motor problems, sheave defects, rail alignment issues, or structural resonance. PRETECT uses vibration analysis and Motion Amplification to identify the root cause of elevator vibration so repairs can be targeted accurately, reducing downtime and improving passenger comfort and system reliability.
What causes excessive vibration in HVAC equipment?
Commercial HVAC systems contain multiple rotating components that must remain properly balanced and aligned. Identifying the true cause requires more than simply measuring vibration levels. PRETECT often combines vibration analysis, Motion Amplification, laser alignment, and root cause analysis to develop effective long-term solutions. Common causes include: Fan imbalance , Motor misalignment , Loose mounting hardware, Worn bearings, Belt problems , Structural resonance , Improper VFD programming, Damaged fan blades , Weak structural supports and Pipe strain .
Why Is annual vibration testing important for emergency back up power systems, engines and generators?
Generators play a critical role in maintaining power during outages, making reliability essential. Excessive vibration may indicate imbalance, misalignment, loose components, bearing wear, or foundation problems that can lead to unexpected failures. PRETECT performs vibration testing to detect developing issues early, helping facility managers improve reliability, extend equipment life, reduce emergency repairs, and ensure generators are ready when they're needed most.
What causes excessive vibration in electric Motors?
Motor vibration is typically caused by imbalance, shaft misalignment, bearing defects, electrical issues, soft foot, resonance, or installation problems. Routine vibration analysis can identify these issues before they result in costly failures.
What causes excessive vibration in pumps?
Pump vibration is commonly caused by cavitation, imbalance, misalignment, bearing wear, hydraulic instability, pipe strain, or improper installation. Accurate diagnosis often requires combining vibration analysis with hydraulic assessment, Motion Amplification, and precision alignment to identify the true source of the problem.
What causes excessive vibration in industrial fans, blowers, and air handling units?
Excessive vibration in industrial fans and blowers is commonly caused by rotor imbalance, misalignment, worn bearings, damaged fan blades, belt issues, structural resonance, or improper installation. If left uncorrected, excessive vibration can lead to premature equipment failure, increased energy consumption, and unplanned downtime. Fan vibration should never be ignored. Routine vibration analysis, Motion Amplification®, and precision laser alignment can identify developing issues before they result in catastrophic failure.
Why do bearings fail prematurely?
Premature bearing failures are usually symptoms of another underlying problem rather than defects in the bearings themselves. Simply replacing failed bearings without correcting the root cause often results in repeated failures. Root cause analysis helps identify why bearings continue to fail and how to prevent future problems.
Why do electric motors burn out?
Electric motors typically fail because of excessive heat caused by overload, poor ventilation, electrical imbalance, excessive vibration, misalignment, or bearing failures. Condition monitoring allows many motor problems to be detected months before complete failure.
Why do pump seals keep failing?
Mechanical seals typically fail because of shaft misalignment, excessive vibration, cavitation, pipe strain, improper installation, or operating conditions outside the pump's design limits. Rather than simply replacing seals, organizations should identify the underlying mechanical issue causing repeated failures. Combining vibration analysis, laser alignment, Motion Amplification®, and hydraulic evaluation often reveals the true root cause and significantly extends seal life.
Mission Critical Facilities:
Data Centers and Hospitals
Why Is Advanced Vibration Analysis important for data centers?
AI and Data centers depend on reliable cooling systems and backup power. Vibration analysis and Motion Amplification identifies developing mechanical problems before they affect mission-critical equipment. Routine testing improves reliability while reducing emergency maintenance.
For more information, download Comprehensive Preventive Maintenance Services for Data Centers
What causes HVAC equipment to vibrate in New York City high-rise buildings?
HVAC vibration in New York City high-rise buildings is often caused by structural flexibility, rooftop wind loading, aging equipment, improper isolation, pipe strain, resonance, and deferred maintenance. Motion Amplification® is especially valuable because engineers can visually observe building movement while equipment operates.
How can commercial building owners reduce tenant Vibration complaints?
Tenant vibration complaints often result from HVAC equipment, structural resonance, piping movement, or rooftop mechanical systems. Proper diagnostic testing identifies the source before unnecessary repairs are made.
HVAC Testing, Adjusting and Balancing (TAB)
Does PRETECT offer TAB (Testing, Adjusting, and Balancing) services in New York Cty and Manhattan?
Yes, Chris Mackey, is our TAB Director and is an NEBB Certified Professional with Certification #24286, giving you confidence that all services are performed to the highest national standards. Please contact Kelley Mackey for questions or to schedule at kmackey@pretectusa.com or call 929-817-1042
What is TAB Services?
TAB fine-tunes your HVAC system to ensure optimal air distribution and water flow—helping you maximize comfort in every space while minimizing energy consumption and maintenance costs.
Download TAB BROCHURE for more information.
Variable Frequency Drives (VFDs)
Does PRETECT offer VFD services in New York City and Manhattan?
Yes, we offer Critical Speed Analysis, VFD Preventive Maintenance, Installations and Repairs. Contact us today to schedule a consultation and ensure your system is always performing at its best.
Download VFD BROCHURE for more information.
Vibration Isolators
What problems can vibration isolation systems cause in buildings?
Vibration isolators are designed to prevent vibration from HVAC equipment, pumps, cooling towers, and generators from being transmitted into a building. Over time, isolators can sag, deteriorate, become overloaded, or be installed incorrectly. Failed isolators can lead to excessive vibration, noise complaints, equipment stress, and even structural damage. PRETECT evaluates isolation systems, identifies failed or improperly adjusted isolators, and makes recommendations to restore proper equipment support and vibration control.