By using this site, you agree to the Privacy Policy and Terms & Conditions.
Accept
routeonerouteonerouteone
  • News
    • Show all
    • Awards & Events
    • Deliveries
    • Environment
    • Exhibitor News
    • Euro Bus Expo 2024
    • Features
    • Legal
    • Minibus and minicoach
    • Operators
    • Opinion
    • People
    • Suppliers
    • Vehicles
  • Vehicles
    • Find a Vehicle
    • ZEV Comparison Tool
    • Sell a Vehicle
    • Vehicle Seller Dashboard
  • Insights
  • Careers
  • Events
    • British Tourism & Travel Show
    • Euro Bus Expo
    • Innovation Challenge
    • Livery Competition
    • routeone Awards
  • Advertise
  • Contact
    • Share your news
    • Subscribe
    • Update Subscription Details
  • Latest Issue
  • SIGN UP
Search
© 2024 routeone News. All Rights Reserved.
Reading: The importance of regular air dryer filter cartridge changes
Share
Font ResizerAa
routeonerouteone
Font ResizerAa
Search
  • News
    • Show all
    • Awards & Events
    • Deliveries
    • Environment
    • Exhibitor News
    • Euro Bus Expo 2024
    • Features
    • Legal
    • Minibus and minicoach
    • Operators
    • Opinion
    • People
    • Suppliers
    • Vehicles
  • Vehicles
    • Find a Vehicle
    • ZEV Comparison Tool
    • Sell a Vehicle
    • Vehicle Seller Dashboard
  • Insights
  • Careers
  • Events
    • British Tourism & Travel Show
    • Euro Bus Expo
    • Innovation Challenge
    • Livery Competition
    • routeone Awards
  • Advertise
  • Contact
    • Share your news
    • Subscribe
    • Update Subscription Details
  • Latest Issue
  • SIGN UP
Follow US
© 2024 routeone News | Powered by Diversified Business Communications UK Ltd
- Advertisement -
-
routeone > Engineering > The importance of regular air dryer filter cartridge changes
EngineeringNewsTechnology

The importance of regular air dryer filter cartridge changes

Sponsored Content
Sponsored Content
Published: July 22, 2020
Share
SHARE

Imperial Engineering offers advice on the importance of regular air dryer filter cartridge changes

Although a humble service part, air dryer filter cartridges play an important role within the compressed air system.

Typically part of the air dryer assembly, the filter cartridge is designed to remove any contamination in the air supply produced by the vehicle’s compressor.

Contaminants include oil, water and aerosols, all of which can reduce the lifespan of components downstream, leading to increased maintenance costs and downtime.

Excess water during the winter season can cause freezing pipes leading to blockages. Furthermore, oil and aerosol contamination risks perishing rubber components within the air valves downstream.

Manufactured by OEMs including Haldex, Knorr-Bremse and Wabco, bus air systems tend to be fitted with one of two air dryer filter types: Conventional, which tends to be fitted to older vehicles and have a single desiccant filter element to remove water, and oil separator cartridges, featuring both a desiccant filter for water and an oil element to remove oil and aerosols. Oil separator cartridges have a longer service life and are recommended for vehicles with high air consumption.

Providing the air system has been depressurised, the cartridges are easy to fit with a quick and simple process. Change intervals vary depending on vehicle operation. For example, buses providing urban services have a high air consumption due to high braking demand and require shorter replacement intervals compared to vehicles on rural routes with lighter braking demand.

As a longstanding OEM parts supplier to the PSV industry, Imperial Engineering has a wealth of air system knowledge, so we recommend a minimum of a yearly filter cartridge change for buses with high air consumption.

  • Operating the air reservoir drain valves is the quickest way to check filter functionality. Clean dry air depleting from drain valve is a good indication the filter is operating correctly. If water, oil or both (yellow mixture) emerge from the drain valve, the filter needs changing.
  • Always check the compressor for oil carry over when changing the filter.
  • Vehicles with slow air build-up times can indicate a blocked filter cartridge due to age or excess oil/water carry over.
  • Ensure the ‘purge’ function is working correctly on the air dryer assemblies. this can be checked by building up the vehicle air pressure. Once the air reservoirs have reached operating pressure, you should hear a burst of air from the air dryer. This is the purge function working, enabling contaminates in the filter to be exhausted, as well as drying the desiccant in the filter.
  • Always check for air leaks, as they can increase the duty cycle of the compressor and air dryer, increasing the volume of air passing through the filters, shortening their lifespan.
  • Checking exhaust ports/silencers on other air valves (for example, EBS modulators and relay valves) for excess oil/water could indicate a badly functioning filter cartridge.

For further information call 01992 634255 or email enquiries@imperialengineering.co.uk

Share This Article
Facebook LinkedIn Threads Email Copy Link
Previous Article Government’s support rejection shows coach industry is on its own
Next Article Don’t let masks ruin your makeup; Stagecoach and @hartyyy share helpful tips
- Advertisement -

Latest News

Temsa HD12 and HD13 delivered to Cresta Coaches under Asset Alliance rental deal
Temsa pair join Cresta Coaches on Asset Alliance rental agreement
Deliveries
Go-Ahead London – Managing Director
Careers Jobs
andy burnham tfgm £15.6 billion (1) The funding announced by Chancellor Rachel Reeves today (4 June) has been allocated to several combined mayoral authorities to use on rail, tram, road and bus infrastructure. Transport for Greater Manchester revealed today that part of the £2.5 billion it will receive will go towards making the Bee Network fully battery-electric by 2030. An as-yet undecided portion of that will support a planned investment in 1,000 new zero-emission buses over that period, the mayoral authority said. That is part of plans to build the UK's "first fully integrated, zero-emission public transport system", with trams and trains also set to benefit. Liverpool City Region's already announced BRT system is among the projects to which its £1.6 billion will be allocated. Under those plans - due for realisation by 2028 - a high-speed network will be served by articulated buses which are modelled on the 'Glider' in Belfast. It is due to link Liverpool city centre with John Lennon Airport, and Liverpool FC and Everton FC's respective stadia along three routes. Although the model of bus has not been confirmed, a Van Hool Exqui.City on loan from Belfast was last year used as a demonstrator. That 18m vehicle can accommodate around 30% more passengers than a typical bus and has three sets of double doors. The funding will also go towards buses elsewhere in the city as the region heads towards franchising services by 2027. Liverpool Mayor Steve Rotheram with a 'Glider' which was on loan from Belfast last year - an example of the sort of bus which could serve the new BRT Bus services in the East Midlands region will be boosted by the funding, thanks to the £2 billion handed to it today by the government. Some of that allocation will be used for a rapid transit network on the Trent Arc between Nottingham and Derby. Between the two cities, the Freeport, Infinity Park Investment Zone and Ratcliffe-on-Soar will also benefit from the improved bus services. South Yorkshire Mayoral Combined Authority's newly announced commitment towards bus franchising has been boosted by £350 million in funding as part of that region's allocation. The funding for West Yorkshire will help build new bus stations in Bradford and Wakefield. Likewise, the Tees Valley Mayoral Authority will put its sum towards a new £15 million bus station in Middlesbrough. Transport Secretary Heidi Alexander says: "Today marks a watershed moment on our journey to improving transport across the North and Midlands – opening up access to jobs, growing the economy and driving up quality of life as we deliver our Plan for Change. "For too long, people in the North and Midlands have been locked out of the investment they deserve. With £15.6bn of government investment, we’re giving local leaders the means to drive cities, towns and communities forward, investing in Britain’s renewal so you and your family are better off."
TfGM’s all-electric bus plan boosted by new £15.6 billion package
News
Local Transport Minister opens First Bus electric depot in Hengrove
Local Transport Minister opens First Bus electric depot in Hengrove
Bus
- Advertisement -
-

routeone magazine is the indispensable resource for professional UK coach, bus and minibus operators. The home of vehicle sales and the latest bus and coach job vacancies, routeone connects professional PCV operators with complete and unrivalled news coverage.

  • Terms & Conditions
  • Privacy Policy
  • GDPR Policy
  • Sustainability
  • Advertise
  • Latest Issue
  • Share Your News
routeonerouteone
Follow US
© 2024 routeone News | Powered by Diversified Business Communications UK Ltd