This webinar was originally held on April 8, 2021.


Heavy Duty cooling system repair requires properly identifying fittings. It is recommended to test certain heat exchangers with high pressure nitrogen. In order to test at 300 psi, it is necessary to have fittings that will seal the cooler’s original fitting set up. Identifying the fitting that will be needed for testing will be covered in this webinar. 


Charlie Dorsey started his career working for his dad’s mobile truck repair company. In 2010, he joined ERS Cooling Systems in Glen Burnie, Maryland doing air conditioning repairs and radiator replacements on trucks and equipment. He later became the service manager, managing all of the shop service work at the facility before becoming the general manager at ERS Cooling Systems in 2017. 

“Fitting Identification” was sponsored by Johnson Manufacturing