DELTA MEMBRANE SYSTEMS LTD
DELTA HOUSE
MERLIN WAY
NORTH WEALD
EPPING
ESSEX CM16 6HR
Tel: 01992 523523
Fax: info@deltamembranes.com
Suppliers of: Type C Waterproofing membranes, Basement/Below Ground Cavity Drainage Systems, Tanking Systems, Basement Tanking Membranes, Type A Waterproofing Systems, Type B Waterproofing Systems, Structural Waterproofing, Waterproofing Systems, Submersible Pumps, Fl
Delta Membrane Systems Limited is the leading Type C Cavity Drain Membrane manufacturer in the United Kingdom and the UK arm of Dörken Gmbh & Co KG, the world’s largest manufacturer of cavity drain membranes. Delta Membrane Systems Limited provides a full range of waterproofing and damp proofing solutions for architects, specifiers, developers, contractors and homeowners alike on new, retrofit and refurbishment construction and in flood resilience. We also supply ground gas protection membranes protecting structures from harmful ground gases such as radon, carbon dioxide, methane and hydrocarbons.
Installing a Delta Membrane System offers complete protection to structures from ground water ingress and contaminates. Our products comply with British Standard 8102:2022, 8485:2015+A1:2019 and 85500:2015 and are BBA certified.
Our nationwide network of Delta Registered Installers offers a fully guaranteed installation service.
Proudly supporting the Women of Waterproofing Networking Group to inspire, retain and attract females into the Waterproofing sector.
Useful Resources:
- CAD Drawings available on our website or via FastrackCAD
- Pump Calculators Available online (Groundwater / Surface Water / Foul Water): Click here
Main Products & Applications:
Structural Waterproofing:
Delta provides waterproofing products for all three types of waterproofing (Types A, B & C) as defined within BS 8102:2022.
Our ‘Type C’ Waterproofing Systems are a maintainable basement/below ground waterproofing solution for new-build basements, refurbishment and retrofit projects. The Type C System comprises of a Cavity Drain Membrane, Drainage system, Package Pump and Control System.
In principle a cavity drain membrane system allows moisture or running water to travel behind the membrane within a controlled drainage system. A cavity drain system requires minimal preparation and disturbance to an existing substrate.
Waterproofing Buried roofs/Podium Decks/Balconies & Terraces
In various formats podium decks have been around for many years, however they are becoming more widely used on top of basement constructions as either paved areas, gardens or terraces. A podium deck is a structural element which is essentially an elevated platform which allows for usage both above and below, these may be terraces over underground car parks, gardens over basements, balconies over terraces and patios.
External Drainage Systems
External Drainage Systems are also known as external tanking, which is the application of a waterproof membrane to the outside of a basement or substructure in accordance with BS 8102:2022 (Type A).
Ground Gas Protection Systems
Delta Membrane Systems Limited offer a comprehensive range of ground gas protection solutions along with its structural waterproofing solutions. From our MemTech ground gas membranes to waterproofing systems, our product range is designed to deal with all ground gas, contaminants and waterproofing related problems.
KÖSTER Tanking Products
Koster Bauchemie AG specialises in high quality structural waterproofing products and systems. These systems protect and preserve buildings and structures worldwide. Whether the subject is restoration of a heritage building, waterproofing of a new building, reinstalling failed horizontal barriers in masonry, restoration of wet basements, or waterproofing of roofs and facades, rest assured; with our comprehensive and deep product program Koster have the optimum solution.
Koster systems and products stand out due to their exceptionally easy and user-friendly application.
Specialist Basement Drainage – Pumps and Flood Protection
We have a team of application engineers who can assist with selection of ground, surface & foul water pump stations. This can be carried out against drawings, meetings on site & your offices or ‘via net’ viewer sessions.
We can also provide solutions for Flood prevention for both renovation and new build projects.
Damp Proofing – Above ground
Damp Proofing is the process in which methods are used to prevent water/water vapour from travelling through walls and floors from ground level up (rising damp). There are other ways damp can enter walls, but this is the most common.
Delta offer a range of physical and chemical DPC’s that can treat all types of Damp.
Structural Waterproofing – Pre-formed, Liquid Applied & Injection
Delta offer a wide range of waterproofing solutions for all types of applications. Products include pre-formed membranes & ancillary products, liquid applied systems, movement and construction joint waterproofing and injection systems. Please contact our technical team for support in selecting the right system for your project.
Further technical information and guidance is available on the Delta Membrane Systems website or via the BPi download Library
Delta Membrane - Education in Waterproofing
Education in Waterproofing
As proud members of the RIBA CPD Providers Network, we can offer our CPDs as double point RIBA Accredited. If you are an Architect, Engineer, Quantity Surveyor, Specifier, Developer, Contractor or Construction Professionals looking to stay updated on the latest structural waterproofing solutions, simply get in touch with a member of our team and they will arrange a CPD session for you and your practice.
Delta offers all CPDS in person at our offices, in person at your offices or online for your convenience, allowing participation at any time and from any location.
Delta's monthly webinars provide concise educational sessions to enhance your specification knowledge. Join Delta's Technical Team as they explore essential elements and considerations used by Waterproofing Design Specialists to develop robust solutions in line with standards and legislation.
RIBA Approved Seminars Available:
• Cold Liquid Applied Waterproofing
• Flood Resilience (PFR)*
• Waterproofing Existing Basements
• Waterproofing Below Ground Structures
• Waterproofing Podium Decks and Buried Roofs
• Waterproofing Concrete Combinations – Types A, B & C
*Additionally, CIWEM (Chartered Institution of Water and Environmental Management) Accredited Course.
Key Learning Aims
• To understand the diverse applications of waterproofing systems.
• British Standards play a pivotal role in the design of waterproofing systems, ensuring they meet stringent criteria. It's crucial to understand how to design these systems according to standards. By doing so, you ensure the systems are robust, efficient, and comply with all relevant regulations.
• Tools and techniques for understanding types of waterproofing systems and their placement.
• Design Principles.
• To maximise the effectiveness of the waterproofing solution, it's crucial to understand product compatibility. Ensuring compatibility of products and systems to reduce risk and mitigate failure.
Key Learning Outcomes
• To identify different Types of waterproofing and their placement.
• To identify the relationships between codes and standards and how waterproofing systems fit into this.
• Preventing water damage and ensuring the longevity of structures.
• Where applying 2 forms of waterproofing solution, an understanding of these offering different property (subject applicable)
• The tools, systems, and information needed to solve problems, and create innovative solutions.
• Flood Risk Management: Fabrics of structures and flood water damage
• How to assess structural fabrics
• Flood Resilience, Resilience and Recoverability approaches
• Solutions available: Resistance and Resilience measures for both new and existing structures
• Resistance, Resilience and Recoverability Design Principles
To book your free CPD, call 01992 523 523, or email info@deltamembranes.com
Always Happy to Help
Delta’s field Technical Teams are equipped to offer valuable assistance, conducting comprehensive surveys to help you select the most fitting waterproofing system for your project needs. This service ensures the chosen solution suits your specific requirements perfectly.
For all your project requirements, Delta's Technical Team is a dependable resource. Offering expert advice, comprehensive support, and timely practical assistance, we cater to your specific needs. Reach us at 01992 523 523 or drop us an email at info@deltamembranes.com.
Delta Membrane : Is it enough just to megger test a submersible pump (sump pump)?
Is it enough just to megger test a submersible pump (sump pump)?
An electric motor serves as a crucial device that transforms electrical power into mechanical energy, facilitating many devices and machinery in their operation. It plays an integral part in generating movement and functionality by leveraging the principles of electromagnetism. This conversion process leads to the powering of various appliances, vehicles, and industrial equipment. Electric motors are pivotal, powering vital processes, especially in manufacturing and energy production. Their invention dates back to 1873 with the accidental discovery of the Gramme Machine, the first of its kind. The evolution of this technology saw a major leap in 1888 when Nikola Tesla introduced the first practical AC electric motor.
Like any mechanical device, they are susceptible to wear and tear over time and operational stress. To ensure their reliable performance and durability, engineers employ a crucial diagnostic procedure called insulation testing, which is widely referred to as “megger testing”.
For numerous years, megger testing has been a trusted tool for electricians to gauge the health of motors. The term “megger” has transcended its status as a brand name to become an industry standard, much like “hoover”. megger testing is a specific type of electrical test that evaluates insulation performance within an electrical apparatus. The process involves the application of a mega-ohm meter to each phase connection of the motor leads and ground, followed by the application of voltage. This meter measures the voltage drop across the connection point between the motor leads and ground, and subsequently calculates an insulation value which is then displayed for the user. A higher resistance number typically suggests better performance. Ideally, these data points are tracked throughout the lifespan of the motor, serving as a warning system for potential failure.
Megger testing, a prevalent practice in various settings, serves as a key component of Preventive Maintenance (PM) performed at regular intervals. This method primarily measures the resistance between the motor under examination’s phase windings and the ground. Despite its widespread use, this protocol has limitations in predicting motor failures. It is because an insulation breakdown, which negatively affects the resistance, results in a discrepancy between phases or between one measurement and a preceding one, thereby giving an understanding of motor health. However, megger testing solely measures resistance to the ground. It’s crucial to note that most electrical motor failures initiate with insulation breakdown – not between phases and ground, but between windings within a phase or windings of different phases. Unfortunately, megger testing in isolation is incapable of discerning this type of failure.
Resistance measurements of windings work as an additional test technique, supplementing megger testing. The logic behind this is that any variation in resistance could potentially signal an impending failure, similar to resistance to the ground. However, this approach might not always detect a winding-to-winding short. Although a turn-to-turn short does affect resistance measurements, the impact on resistance alone is typically minimal. Conversely, the impedance across the windings experiences a more significant effect. Most multimeters are designed to test resistance, not impedance (a measure of the opposition to electrical flow), which often leads to a misunderstanding with those who tend to equate resistance and impedance.
To more precisely assess the electrical health of an electric motor, it is imperative to extend the evaluation beyond megger testing.
Testing a sump pump
Submersible pumps are a reliable method for transporting water from buildings or residences in Type C and structural waterproofing applications. These pumps are engineered to function while completely submerged in the water they’re pumping.
The motor plays a pivotal role in the operation of a submersible pump (sump pump/packaged pumping station). In case of any malfunction, it is beneficial to commence with motor testing for an effective diagnosis. Given the pump’s location below ground in a chamber, it is advisable to confirm the motor’s functionality before installation or by removing the submersible pump from a sump chamber. This verification can be accomplished by measuring and assessing the winding resistance and insulation resistance, which are key indicators of a submersible pump motor’s condition. These tests are effective strategies for troubleshooting both new and used motors.
For safety reasons, it’s essential that certain activities are not attempted at home without professional guidance or supervision.
Using a megohmmeter (megger) or ohmmeter, which are connected to the motor leads, is a highly effective way to ascertain whether the motor windings are either electrically short or open, which can influence the motor’s overall performance. The ohmmeter is particularly useful for measuring winding resistance, while the megohmmeter excels in checking insulation resistance. After obtaining the necessary measurements, these should be compared with the standard values provided by the pump manufacturer for the specific motor.
Regular Servicing
It is advised to choose a well-regarded service provider for your pump maintenance needs. This can ensure optimal performance and longevity of your equipment. Selecting a reliable service can also prevent potential issues and costly repairs in the future.
Always Happy to Help
For all your project requirements, Delta’s Technical Team is a dependable resource. Offering expert advice, comprehensive support, and timely practical assistance, we cater to your specific needs. Reach us at 01992 523 523 or drop us an email at info@deltamembranes.com.
