Environmental Test Chamber Repairs

– Ultra-Low Temperature Chambers Service, Repair, Maintenance, Calibration, Retrofits & Upgrades on Environmental Test Chambers and Systems.

SJJ System Services Limited was established in September 2015 by Mr Steve Jones.

With a well experience team of staff with all over 25 years of experience within the industry of environmental test chambers and test systems we offer you a fast, efficient and friendly service operation ranging from one off visits to fully comprehensive cover depending on our customers requirements and budgets available.

With our extensive knowledge we have the flexibility to be able to deal with all types of manufactures of chambers working on all aspects of refrigeration systems, electrical panels and *control systems (*unless locked out by manufacturer, thus limiting the service providers) However we offer upgrade and modification work which can eliminate this function should the customer wish to source alternative service providers.

Ultra-Low Temperature Chambers

SJJ System Services Ltd have access to a range of test chambers at various sizes that can provide ultralow temperature controlled storage. These test chambers have the capability of testing and storing your products at -75°C.
Which is mainly used in pharmaceutical industry especially covid-19 vaccine testing and storage.

SJJ System Services Ltd can also supply these products through a third party.

Equipment Range:
SJJ can provide support on any make & model, style or type ranging from small Bench top to Large Floor standing Temperature / Humidity chambers, Vacuum, Salt Spray, Walk-in / Drive-in Rooms, Halt / Hast, Vibration test chambers.

All works carried out by SJJ System Services is carried out to the highest standard and within current legislations.

Company Accreditations

Test Chambers and Systems Services

Service & Maintenance

Service & Maintenance

One off general service visits can be provided on systems which covers checking of electrical, mechanical, refrigeration and various PC driven control systems.

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Chamber Calibration

Chamber Calibration

Our calibration service can offer you assurance that the system is operating at its full potential and is within its specified tolerance.

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Chamber Upgrades

Chamber Upgrades

Upgrade your chambers performance/control system?

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Chamber Retrofits

Chamber Retrofits

Refrigeration retrofits can be offered to comply with current F Gas legislations.

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Chambers for Sale and Rental

Chambers for Sale and Rental

Please contact us for latest chamber availablity

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Maintenance Agreements

Chamber Manufacturers

Service, maintenance and repair work including calibration, retro fits and upgrades on many Environmental and models of test equipment.

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Our Testimonials

Wayne Bainton

Wayne Bainton

Purchaser

Samual Williams

Samual Williams

Control Systems Engineer Apprentice

I joined SJJ System Services in February of 2025 after spending 3 years in the Royal Navy as a Marine Engineer working on Vanguard class submarines.

I will be working towards completing a level 3 BTEC in Electrical/ Electronic Engineering from September of 2025.  I’m looking forward to learning as much as possible from the company and from the BTEC to put into practice when working on projects. After completing my apprenticeship, I aim to be a fully competent engineer able to carry out any projects and jobs required.

Calum Mayback

Service Engineer Apprentice

Since Joining SJJ System Services as an apprentice in the September of 2024, I have achieved a level 3 BTEC in Electrical/Electronic Engineering, along with multiple work-based qualifications.

I gained these qualifications through Coleg y Cymoedd  and by attending numerous courses throughout my time with the company. However, I now aim to enhance my overall knowledge within the industry, as I am now currently working towards my HNC in Electrical/Electronic Engineering, and by obtaining further experience from the decades of experience of the senior engineers here at SJJ.

After I acquire the relevant level of education and experience, I intend to become a fully independent engineer at SJJ Systems Services, with the competence to work individually on site.  

Ryan Whitfield

Ryan Whitfield

Junior Service Engineer

Since joining SJJ System Services as an Apprentice I have recently gained a BTEC Level 3 in Electrical / Electronic Engineering and in September 2017 I have enrolled on a 2 year HNC Engineering Course for continuous improvement through my apprenticeship employment.

With my college training and the extensive knowledge and experience of my work colleagues my aim is to become an independent Service Engineer, fully conversant for site services.

Tony Mabbitt

Tony Mabbitt

Service Engineer

I am an experienced Service Engineer that has worked in the industry over 23 years.

My early employment days as Mechanical Engineer and Welder/Fabricator put me in an ideal position to be able to offer the full package from assembly/build to installation work.

In 1994 I started my employment as a Refrigeration/Electrical Engineer at Design Environmental Ltd. It was during my years here that I gained extensive knowledge and understanding of test equipment. I steadily progressed into the Service Department and became a remote Service Engineer being fully conversant with many manufacturers test chambers and systems.

With the company merging in later years with Weiss Technik UK changes within the organisation prompted my decision to depart from the company following 23 years of employment.

I believe myself to be a dedicated engineer and acknowledge from experience, to appreciate great leadership and teamwork in an industry that can sometimes prove to be both frustrating and rewarding to all concerned.

Chris Davies

Chris Davies

Service Engineer

In 2008 I was successful in getting an apprenticeship with Design Environmental Ltd (then Weiss Technik UK) as an Electrical Design Engineer. During this time I gained a National Diploma in Electrical/Electronic Engineering before going on to complete a HNC in Mechatronics.

After this I became a Test/Commissioning Engineer and was responsible for setting up the chambers at the factory before carrying out the commissioning at the customers site. This has given me great experience in the refrigeration and electrical control systems on environmental chambers. This led me to my most recent role as Senior Technical Support Engineer in the service department, helping service engineers in the field as well as supporting customers with their queries. The closure of the Ebbw Vale factory has led me to the next chapter in my career with SJJ System Services. Having already worked with most of the team for several years I look forward to joining the company and help it to continue to grow.

Mark Whitfield

Mark Whitfield

Service Engineer

I am an experienced Service Engineer that has worked in this industry for the last 27 years.

My employment journey started with completing a YTS scheme in catering however I decided this was not the job for me, although the family still enjoys the rewards of the skills and experience I gained. Following a career change I immediately started working as an apprentice for a Plumbing & Heating Installation company which progressed with me qualifying to install full heating systems and general plumbing work for domestic requirements. Unfortunately, due to cut backs within the company I was released of my contract as a plumber to which I had enjoyed.

In 1990 I joined Design Environmental Ltd, later merged to Weiss Technik UK ltd, as a plumbing/refrigeration engineer working at the factory assembling the chambers pipework. It was from here that I gained much experience in both refrigeration and electrical which lead me in to the position of Field Service Engineer. Having the qualifications and experience of assembly, test, commission and fault finding of various test equipment UK & abroad, I have good knowledge and understanding of the many applications that we see out in the field.

I am fully committed engineer that works well together with both Customer and Colleagues and I am very much looking forward to being part of a great service team to which we are all privileged to be part of.

Ben Oram

Control Systems Engineer

On completion of my Electrical/Electronic Engineering National Diploma, I pursued my dream to become an Electrical Design Engineer.

During my employment at Design Environmental Ltd, then to be Weiss Technik (UK) Ltd, I began designing electrical control systems for environmental test chambers. After completing four years within the Design Department, I took on the challenge as a Technical Support Engineer for the Field Service Engineers and customers throughout the UK. During this time I also carried out a part time study to achieve a Bachelor of Engineering (B.Eng) in Electrical Engineering.

With over 9 years of experience in this industry, I have gained great knowledge and skills in Refrigeration, Computer Repair, Computer Networking, Technical Support, HMI, PLC Intergration and Computer Aided Design (CAD). My aim is to help the team continue good working relationships with both existing customers and new, whilst carrying out a high standard of Research & Design for implementing new technology, in order to move the company forward.

Catheryn Whitfield

Office Manager

Having worked in the Industry 27 years I have gained much experience and understanding of working as part of a good service team.

I believe this good working relationship should be the key factor for any organisation when offering a customer service support.

Building this relationship is something that I strive to maintain to everyone as I believe it to be essential to both Service Provider and Customer to maintain an open and honest relationship at all times.

I will do my utmost to supply you with the level of service and support that is required at all times.

Steve Jones

Managing Director

Following a four year apprenticeship in Electrical Engineering as a coal face electrician I took a change in direction to further my knowledge and work in the refrigeration industry.

I have since worked in the industry nearly 30 years starting out as a Service Engineer in Commercial Refrigeration and Environmental Test. From a Service Engineer at Design Environmental Ltd I progressed on to become the Service Manager for the Weiss Group in the UK. My ambition to offer customers a friendly, reliable and great service has given me the drive and determination to set up my own company SJJ System Services in September 2015.

With my extensive knowledge and customer contacts this is proving to be a successful venture for both myself and the team that I have working alongside me.

As my aim is to provide an efficient and professional service to all concerned I am a member of the following bodies to ensure we comply with all the latest regulations and H&S regulations within the industry.

(ACRIB/CSCS/ECS/Napit/Ladder Association/Gas Safe/F Gas)