Mark Henderson was also aware that Expel has the capability of removing the need for a refrigerant dryer for aggregate sites. Although the Charlton site was operating without a dryer, Henderson was desperate to eliminate equipment downtime caused by water in compressed airlines and had considered a refrigerant dryer to try and help with the problem of water. Henderson was sceptical to install a dryer as sites with dryers still suffer issues.
“Even the sites that do have refrigerant dryers are still having problems with water in compressed airlines. For instance, solenoid valves on the bin doors have been sticking.” Mark Henderson, Maintenance Manager, Tarmac.
Most compressed airlines at aggregate sites are long and any water vapour present in the air, by the time it has reached the point of use, has had time to cool and condense to liquid water. Additionally, a refrigerant dryer doesn’t remove oil emulsion fluids or solid particulates which also cause problems to pneumatic equipment. Expel is a 3-stage compressed air filter that is capable of removing ALL of these liquids and particulates down to 1 micron all in one unit. Therefore, a dryer is no longer required because Expel does a better, more cost-effective job when installed correctly.
Expel has been incredibly successful, when placed correctly, more dryers can be switched off and the goal to eliminate water from compressed airlines is achieved.