Continuing our blog review of $12Billion reasons to come to MACS 2015 Training Event and Trade Show, let’s look at the heavy duty truck and off road total vehicle climate and thermal management program.
The following programs will be presented consecutively in a general session format.
Non-engine driven A/C systems
In this presentation, Gary Hansen of Red Dot will discuss the emerging trend of non-engine driven A/C systems in off-highway vehicle applications. As off-highway equipment makers seek greater fuel efficiency and reliability, they are removing the air conditioning compressor from the engine. They are using both electrical and hydraulic systems to drive the compressor with some promising results. (Scheduled once on Thursday morning.)
Impact of internal heat exchangers (IHX) on performance of A/C systems
Dr. Alex Moultanovsky of ACC Climate Control will cover the operation of A/C systems using an IHX. He will address the role of an IHX on A/C systems with R-1234yf and R-134a refrigerants, IHX design considerations, and advantages of these systems. Alex will compare results of A/C system testing done both with and without an IHX. (Scheduled once on Thursday morning.)
Bus cooling systems
Cooling systems are one of the most important maintenance items on any vehicle, including buses. Frank Tonon of Spectra Premium will discuss the service of heavy duty cooling systems, diagnostic and testing techniques, and steps to perform during bus radiator replacement. Information on bus maintenance regulations in different states will also be included. (Scheduled once on Thursday morning.)
Service tips and procedures
The Bergstrom presentation with Al Leupold will include cab air filtration requirements and maintenance, aluminum heat exchanger service issues, A/C hose/tubing fittings, connections and seals, and NITE system service procedures for heavy duty trucks. (Scheduled once on Thursday morning.)
Caterpillar HVAC system service and design
Dan Spurgeon of Caterpillar will be covering several of the latest updates for servicing CAT machine HVAC systems, including some of the latest designs entering production. He will discuss the unique features, with an emphasis on their impact on field diagnosis and repair. (Scheduled once on Thursday morning.)
A/C valve application and installation
The A/C system has several access ports that are used to monitor and service the A/C system. These ports consist of a valve element inside a port that is usually brazed to the A/C line. In this presentation, Jeff Schultz of Schrader will discuss the A/C Valve Application & Installation Manual, including information about R-1234yf refrigeration valves, cores and service ports. Many different types of valves and seals will be compared, as well as core selection and system application. (Scheduled once on Thursday morning.)
AGCO equipment HVAC service and repair
Starting with the compressor, and going through the whole system, Sherwood Wheeler of AGCO will discuss using temperature to diagnose and troubleshoot heavy-duty, off-road and agricultural HVAC systems. He’ll share A/C related changes made to AGCO equipment, including the evolution of their systems, with updated refrigerant capacity information. (Scheduled once on Thursday afternoon.)
CNH service parts update
This training session with Leo Chernyavsky of CNH will review recent service parts obsolescence, completed and planned replacement parts releases, and standardization activities. A questionnaire feedback survey will be offered to the audience to discuss issues that shops are facing and help ensure customers are receiving required support in servicing CNH equipment. (Scheduled once on Thursday afternoon.)
HD transit bus accessory belt drive systems (ABDS)
In this program, Nelson Jones of Gates will discuss major transit bus manufacturers, common transit bus engines, commonly used A/C belts, A/C belt drive issues, as well as the use of “snubbers” on transit bus A/C and fan drives. He will present solutions to some poorly designed A/C drives. He will also take a look at overhead and side mounted fan drive systems, transit tensioners, ABDS issues, and aftermarket A/C drive systems. (Scheduled once on Thursday afternoon.)
Bus A/C systems
Greg Hughes of Mobile Climate Control will discuss MCC training topics, including preventative maintenance items, where to start your A/C system troubleshooting, using a pressure temperature chart, and proper charging of MCC systems. He’ll also offer some tips and tricks to use when working on bus A/C systems, and include some “tales from the tech support trenches.” (Scheduled once on Thursday afternoon.)
Freightliner Cascadia HVAC system overview and service procedures
This program with MACS trainer Larry Turay will cover system design and component details including “ParkSmart,” and discussion on how the truck uses multiplexing for system control and protection. Larry will cover diagnostic procedures and the use of Service Link to read, interpret and clear fault codes. Common HVAC problems found on this Class 8 truck will be discussed as well. (Scheduled once on Saturday morning.)
RV and motor home A/C systems
MACS trainer Tom Potter will present this training class covering RV and motor home HVAC dash systems. He will discuss the various A/C system providers that are used in these types of vehicles, compare pusher type versus front engine systems, cover known electrical issues, system design weak points, as well as information sources to help you back at the shop. (Scheduled once on Saturday afternoon.)
If you’re a service professional and not a MACS member yet, you should be! Become a member and receive a technical newsletter with information like what you’ve just read in this blog post visit http://bit.ly/10zvMYg for more information.
You can E-mail us at firstname.lastname@example.org . To locate a Mobile Air Conditioning Society member repair shop in your area. Click here to find out more about your car’s mobile A/C and engine cooling system.
Mobile A/C professionals should plan to attend 35th annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Meet me at MACS Make Connections that Matter, February 5-7, 2015 at the Caribe Royale, Orlando, FL.