What are the dangers of HVAC pressure? Everything you need to know

It’s no secret that HVAC and refrigeration systems are complicated pieces of equipment. But with the right technology and a bit of know-how, it’s easier than you’d think to have them running safely and efficiently.

There are a number of process occurring inside these machines all at once, with temperatures and pressures contributing to their functionality. If either of these functions develop issues, it can compromise the effectiveness of the unit, or create a dangerous work environment.



With the right support HVAC systems don’t pose as many problems as they used to


The following examples outline the potential dangers of incorrect pressure readings, and possible causes for these problems.


What dangers do incorrect pressures pose?

HVAC and refrigeration units are designed with certain operating conditions in mind, and the parts that comprise them will all have a specific set of tolerances to ensure they don’t fail. While most units will have a cut-off that detects dangerous pressures, these instances still pose a threat to its functionality.

HVAC Web Tech states high pressure within these units could cause the internal cylinder to rupture, rendering it useless. In extreme cases, this can create further problems if the pressure is great enough to release the refrigerant at force.

In such an event the force can even cause damage to nearby workers or other machinery. The organisation advises that any personnel working with faulty units should be wearing the necessary protective clothing in case high pressures overload them.


How is high pressure caused?

Due to the complicated nature of these units, there are a number of reasons for pressures to become too high or too low. One possible cause, which is relatively simple to diagnose is an overcharged refrigerant. Put simply, this means there is too much of the respective refrigerant in the system, which normally results in high pressure readings.

The amount of refrigerant in a system greatly affects its potential to function and contributes to low pressure measurements as well. If there is too little refrigerant in the unit, it will result in low pressure, preventing the machine from running at its best.


What will help to keep pressures in check?

testo-550-digital-refrigeration-manifold-bluetoothThe best way to ensure these conditions don’t endanger your HVAC unit is to schedule regular maintenance and ensure it is performed correctly. On top of this, any strange behaviours from the machine should prompt immediate inspection.

Devices such as the testo 550 Refrigeration gauge (pictured right) provide an easy way to inspect pressures in your HVAC and refrigeration equipment, with the digital display feeding accurate information that is right first time, every time.


Like some more info?

For more information on testo’s solutions for the HVAC and Refrigeration industry or any of our products why not visit our website www.testolimited.com/refrigeration or give us a call on 01420 544433 and we’ll be happy to help.

About Testo Limited

We offer an extensive range of instruments for many parameters and applications including; Temperature, Humidity, Velocity, Gas analysis, RPM, Pressure, Light, pH, Sound. testo instruments are widely used in the following sectors: HVAC-R: heating, ventilation, air conditioning and refrigeration. Process Industry: manufacturing industries, service companies and utilities. Food Sector: including food manufacture, transport, storage, distribution and retail. Thermal Imaging: for building surveys, maintenance, electrical inspections and production monitoring.

Posted on August 2, 2016, in Facilities Maintenance, Facilities management, FM, hvac, Latest News, News, Online, Refrigeration, Safety and tagged , , , , , , , , , , , , . Bookmark the permalink. Leave a comment.

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