Industrial Refrigeration

Blue Grasso industrial refrigeration compressor inside chiller being prepared to be lifted out
Ancillaries being removed for lift and shift

Industrial Refrigeration 

Maximus chillers is second to none in the field of industrial refrigeration

Any Chiller- Any Problem- Any Part- Any Refrigerant- Anywhere- The MAXIMUS ADVANTAGE™

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Ammonia has been used for industrial refrigeration for over 125 years and has a reputation as a pre-eminent refrigerant. Ammonia is used in applications such as food production. CFCs, such as Freon, became popular in the 1930s due to their low toxicity. The chlorine in the refrigerant was found to have caused a hole in the ozone layer. Therefore, they have now been phased out. Non-chlorine, low toxicity, HFCs were developed to replace the CFCs


HFC refrigerants have a high global warming potential, so they are being phased down to 21% by 2030

HFO refrigerants, such as, R1234ze when they leak, go through the weather system and end up in the sea. They have been reported to be harmful to marine life. These refrigerants are used for chilled water and process applications

Ammonia is the best choice of refrigerant in industrial applications


Between now and 2030, ammonia refrigerant will become increasingly popular in non-industrial applications, such as, cooling facilities and the cooling of buildings. New ammonia chillers are simpler in design, therefore competitive in price to HFC chillers. The higher initial cost is paid back in electricity savings within 2 years- then they become cheaper. They use less electricity because ammonia has a latent heat bubble 5 times bigger than other refrigerants. That means 5 times more refrigeration effect, per kilo of refrigerant, than HFC refrigerants

Case Study of Industrial Refrigeration

The photo is during an industrial refrigeration visit after a period of neglect

Leak Detection System Calibration

As a matter of urgency, we calibrated the ammonia leak detection system. It was in fault because of ammonia leaking over a long period of time, throwing it out of calibration. A working ammonia warning system was the most important part of this visit so far!

Compressor 'o' Ring Leaks 

The ammonia was leaking from the 'o' rings on the compressor. This type of problem occurs more often on the discharge. Due to the heat, the 'o' rings become plastic like and flat- causing them to leak

Compressor Remanufacturing

We lift and shifted the compressor to be remanufactured in our workshop. The rotors, with bearings, slide out still pressed into the casting, so it was straight forward to strip the compressor, replace the 'o' rings and shaft seal, then rebuild the compressor

Condenser Fan Replacement

On running the plant, we found that most of the condenser fans needed replacement. The long period of time that the chiller had been off had allowed water to ingress into the fans. To fix the industrial refrigeration system, the fans and scaffolding were sent to site and the fans were replaced

Industrial refrigeration equipment outside chiller
Warning sign, vacuum pump and other equipment

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Engineer with orange escape hood breaking into the system
State of the art personal protective equipment

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Industrial Refrigeration Alarm and Refrigerant Leaks 

Maximus Chillers offers the complete package for your industrial refrigeration plant including...

Ammonia Alarm

In the event of a leak, the ammonia alarm is triggered and the plant shuts down. The machine brings a fan on which disperses the ammonia into air. The ammonia refrigerant then absorbs into the moisture in the air

Leak Repairs

For large leaks: breathing apparatus and chemical suits are required to isolate the leak and allow time for ammonia dispersal. For small leaks: an escape hood is required in the work location. Our engineers repair the leak then start the machine back up

What We Offer for Industrial Refrigeration

A Lifetime of Experience

The industrial refrigeration being carried out in the picture has to be done professionally to ensure minimum disruption in down time. Between all the team here at Maximus Chillers we have a lot of industry knowledge. We have engineers who specialise in the different manufacturers of machine

Parts and Materials

Maximus Chillers can source any part and material through our fast supply chain. Offering same day delivery for most parts. We can even upgrade your industrial refrigeration system by fitting new, upgraded parts Read More

The Best Equipment

Good tools and equipment make the job go easy. Our equipment is the best available to our industry. When we work on your plant, you can rest assured in the quality of our equipment and the quality of our workmanship

A silver industrial refrigeration plant with compressor cables connected to starter panel
Open drive reciprocating compressor

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Screw rotors removed from compressor to be resurfaced
Bearings pressed into the casting for ease of service

Why Choose Us for Industrial Refrigeration?

Industrial refrigeration capability that is second to none

Manufacturer trained engineers

National and international

Industrial Refrigeration  UK

Maximus Chillers has recently won the industrial refrigeration contract for a UK customer in the Midlands. These were the complaints from the customer:

Fault Resets

Where no fault is present- the machine still needed to be reset. When this situation occurs, it is due to the parameters in the program being too near the trip out. The parameters were adjusted. Also, some system issues needed to be resolved. Let's keep this simple: the plant is a cooling system and with regular service- it can be made to settle down and run seamlessly 

Too Many Parts Needed

As above: we simplified the machine, so it does not to need so many parts. It is only used as a cooling system after all- so long as it cools efficiently- everyone is happy!

Next Steps...

Ring our Technical Support Desk to discuss your issues and requirements 0161 370 7193

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Industrial Refrigeration

UK Quality Overseas

Maximus Chillers is a sought after company in the field of industrial refrigeration around the world because the world knows that the United Kingdom means quality in engineering. The UK has a long history in industrial refrigeration. The knowledge of which is invested in our engineers. We have international customers in the USA, Moscow and the Middle East

International Shipping

We have supplies sent out to site prior to the visit, there are tools and equipment available on site too. This means less to ship for the repairs. Industrial refrigeration suppliers are not round the corner while on site, so each job is meticulously planned. All the smaller things like fittings and ammonia grade Loctite are taken with us to ensure the job goes smoothly

Global Technical Support Desk

Our customers enjoy the full support of an industrial refrigeration Technical Support Desk. They allow for the time difference to decide the best time for a phone call. Emails are answered real time or when the office opens in the morning. Technical information such as user manuals can be sent out as a PDF allowing the customer to understand the front end user screens

Industrial Refrigeration Upgrade

No job is too big for this industrial refrigeration company. We upgrade your existing plant with bespoke, state of the art controls and components. This optimises energy efficiency and reduces downtime. We can arrange for the works to be carried out during factory shutdown for minimum disruption. Most customers, however, have redundant systems- so works can be carried out with no disruption at all

Future Proofing

Ammonia already is a future proofed refrigerant, way ahead in performance compared with other refrigerants. The industrial refrigeration upgrade will give you a long and cost effective future for your plant. All the money required to buy new plant can be used more effectively in the running of your business

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Industrial Refrigeration Pipework

The use of steel makes industrial refrigeration different as opposed to HFC chillers. Ammonia corrodes various metals and alloys. Steel, however, works well with ammonia


These chillers are prone to leaks on the copper pipework. On the condenser, the copper expands and contracts- eventually rubbing through against the steel frame. Vibration related leaks are also common


On an ammonia system, steel that is freezing then thawing on defrost or off cycles creates rapid rust formation and can lead to catastrophic failure of the pipework. Steel that is permanently frozen creates slower rust formation as the ice slows the oxidisation process. On an industrial refrigeration visit, our engineers carry out metallurgic testing to gauge the integrity of the steel

Industrial Refrigeration Tick Sheet

We at Maximus Chillers believe our detailed industrial refrigeration Tick Sheet is the best in the industry. It has taken years of development, every time there is a change in the industry the Tick Sheet is updated. It has all the values and adjustments that can be checked to ensure the optimum, energy efficient performance of your plant. When an engineer is struggling during the fault finding, he uses the Tick Sheet as a reference- the fault will be on there somewhere!

Oil Return on Industrial Refrigeration Plant

Oil used to lubricate the compressor and ammonia are non-miscible. That is to say: the refrigerant does not entrain the oil round the system and back to the compressor

Reciprocating Compressors

In an industrial refrigeration system using reciprocating compressors: the oil mainly stays in the compressor

Screw Compressors

Screw compressors work differently: the oil is discharged, so an oil separator is vital to the oil return

Oil Separator

Put simply: an oil separator makes it as easy as possible for a gas to get through, while as hard as possible for a liquid. The oil drains to the bottom of the vessel and is pumped to above discharge pressure into the screw and bearings

Oil Harvesting

During the industrial refrigeration visit: oil is harvested from the low side of the system. On modern systems, the oil return sensors and return solenoids ensure most of the oil gets back. This is assuming the system is running otherwise okay- if there are refrigerant issues- oil return issues will follow

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