Pump Spotlight- The Grundfos ‘Comfort’

The Grundfos Comfort is designed for pressuirsed systems, this family incorporates intelligent microprocessor technology to control its operation and match the hot water service demand pattern. As well as controlling the return water temperature.

Applications

For circulation of water in

  • Domestic hot water systems
  • Heating systems
  • Cooling systems

Features

  • Available with AUTOADAPT that has the ability to continuously find and adjust to its optimal setting
  • Head removal for ease of maintenance
  • Low-noise
  • Low-energy
  • Corrosion- resistant pump housing

Mechanical Seals

Mechanical seals are used to prevent liquid from leaking out of pumps, between the rotating shaft and the pump casing.

Earlier pump models may use mechanical packing (otherwise known as Gland Packing).

If you’re wondering why your mechanical seals keep failing, then this blog post can assist you in advising 5 possible reasons as to why this may be occurring and how to overcome the issue of failing mechanical seals.

1.The pump has been ‘run dry

Not only does this have an impact on mechanical seals, but this can affect other areas of the pump such as the impeller. Running pumps dry can cause the impeller to melt along the shaft, causing the impeller to seize onto the shaft.

2. Heat caused the o-rings to deteriorate

3. The seal materials were attacked by the fluid being sealed

4. There is an operator error

Skipping initial start-up procedures are a big factor when it comes to mechanical seal failure. Improperly starting the pump can cause the motor to trip and the shaft to twist causing undesirable orbit movement.

5. The wrong seal has been installed or the seal has been installed incorrectly

So now you know what might be causing Mechanical Seal failure, but what can you do to avoid failure?

1. Choose the correct seal

Lack of knowledge and information will only cause obstacles in the seal selection process. Before deciding on a seal, you should carefully consider the application and operating conditions. It is highly likely that you may need to speak to a specialist to ensure the information yo have obtained is accurate, or even to obtain the information required.

2. Properly install the seal

Mechanical seal installations should be performed using the specific steps outlined by the manufacturer, taking care to avoid damage to the seal faces and / or O-rings.

Seeking assistance from a specialist to do this is also likely to be necessary.

3. Prevent excess heat generation

Excessive heat generation between seal faces can drastically reduce seal life. Dry running should be avoided at all costs. Dry running typically occurs when a pump is flooded or the seal chamber is incorrectly vented before pump start-up.

4. Maintain proper storage conditions

Mechanical seals are composed of many unique parts and a variety of materials. Because of the diverse properties and precise nature of these components, it is imperative to understand how long a seal can be stored safely without compromising function.

Should you require any further advice on how best to store a seal, or need assistance installing mechanical seals, get in touch. 

Why You Might Need to Repair or Replace Your Electrical Control Panel

Industrial electrical control panels fall under two categories:

  1. Units that contain components that control major industrial production systems, such as presses, cranes, conveyors and refrigeration unit

or

2. Units that contain components that control environmental systems, such as lighting, HVAC and pumps

When power or control components, such as: motor controllers, wires, relays and switches, fail to work properly, production immediately slows or comes to a halt. Resulting in lost revenue and great on-site emergency repair call costs.

Therefore, it’s critical that you hire technically trained personnel to perform regular preventative inspections and repair any equipment if the following conditions exist in your factory.

Precursor Events  

Power surges, roof leaks and floods. Are all reasons to have your equipment inspected.

Some factory employees fail to seek assistance when they notice warning signs, such as an unusually warm enclosure, low performance, metal corrosion, component wear, strange smells or noises, even though these warnings often occur before electrocution and fire events. Causes of some signs vary, for example, defective and worn wire insulation and current leaks can cause performance problems and strange odors.

Disorganised Units 

Many factories have custom, D-I-Y patched and junction box control panels designed to fit their unique industry, product and/or environment needs.These units usually have messy and overcrowded interiors that create unnecessary repair and safety problems and allow noise interference. Users and technicians also often find it difficult to determine the purpose of components in disorganised units.

Non-Compliance Issues 

Many older and customised control panels fail to meet National Electric Code requirements. As a result, they also fail to meet some of the National Fire codes. Obviously, older units with worn and/or damaged parts are fire hazards. Disorganised units can also fail to provide enough required space. Many units simply fail to provide appropriate printed markings, such as part labels and system diagrams.

In this case it is better to replace your control panel.

Bad Location

When a control panel is located near anything that blocks air vents or certain industrial byproduct and environmental conditions, such as corrosive vapors, oil, dirt, vibrating equipment, moisture and heat or cold, the unit is more likely to suffer damage. Additionally, higher labor-related costs often occur if technicians can’t access a control panel with because it’s located in a partially inaccessible spot.

The New 5th Generation Hydrovar

 

Highly efficient variable speed drive reduces energy consumption

Xylem, a global water technology leader, has debuted the 5th generation HYDROVAR, an intelligent control system that accurately adapts to system demands, helping end-users realise cost and energy savings while achieving optimum system performance. The new drive and motor control can reduce energy consumption of a pump by as much as 70 per cent.

Capable of running systems with up to eight pumps, the 5th generation HYDROVAR has multimaster functionality, enabling each individual pump to take control if one or more units or sensors are not active. This continuous booster system operation ensures reliable water pressure across various residential, industrial and commercial applications.

Easy installation and commissioning

The 5th generation HYDROVAR is backward compatible to the current Generation 4 HYDROVAR product and is designed to accommodate both new and retrofit installations. A newly added wiring harness includes a separated wiring chamber with a dedicated cover that provides safe and easy access to the wiring, while protecting the unit’s electronic components. The clip-and-go mounting system further simplifies the direct fitting process.

Setup and commissioning is also fast and simple. The start-up menu guides users through every step of HYDROVAR’s commissioning process, while the larger LCD display shows an expanded range of system parameters for standard motors. This functionality enables installers to manage a wider range of data, ensuring accurate programming at setup.

The 5th generation HYDROVAR comes standard with BACnet and Modbus capability for seamless Building Management System (BMS) integration. Optional Wi-Fi for remote connection to the unit via any mobile device, laptop or PC is also available.

Extended system lifecycle, efficient operation and simple retrofitting

Wear and tear caused by standard operation is minimized due to innovative features, including advanced motor control software that extends the life of the equipment by reducing heat. The HYDROVAR also has an embedded Current Total Harmonic Distortion (THDi) filter that lengthens overall life of the equipment connected to the same grid and preventing cables from overheating without the need for reactor filters.

Using HYDROVAR with an existing pump can lead to significant energy savings, especially when operating at partial loads. It can be efficiently retrofitted to any standard asynchronous pump motor suitable for variable speed operation. HYDROVAR’s direct mounting method does not require a special adaptor, and is available for power ranges from 0.55 to 22 kW, making the retrofit process efficient, easy and cost-effective.

In many cases, pump systems are oversized for the application and use more energy than needed for typical operation. The 5th generation HYDROVAR varies motor speed to match system demands, keeping energy and operational costs low. Additionally, the soft start-and-stop functionality adapts pressure according to system requirements, dramatically extending equipment life.

HYDROVAR’s modular design enables a customized fit for any configuration of pumps, and can be motor or wall mounted to for use with any manufacturer’s pump. Configuration options include a range of a single pump to as many as eight pumps to meet any application requirements.

Introduced in 1995, the HYDROVAR variable speed drive has been continually updated, confirming its legacy as the industry’s choice for optimising fixed speed pump efficiency.

If you have any queries regarding the 5th generation HYDROVAR, or wish to order, call our Technical sales team 01442 860000

Your much needed service!

We have 35 years of pumping experience. We know when a pump is ready for replacement or just needs a patch up and a lick of paint. If your pump has been in place for as long as you can remember, or was installed prior to you moving in, give us a call. Just to be on the safe side.

We will send out our sales director for a consultation and help you plan a preventative maintenance servicing that your system could be in desperate need of.

Call today to find out more and make an appointment.

01442 860000