OFFICIAL PARTS SUPPLIER part is knowing it’s working when it’s supposed to be working.”
A LEAP FORWARD Medved said the yellow-bus sector is catching up to the truck
PLUS All Major A/C Brands COMPRESSOR OIL CAPACITY
When replacing the A/C compressor or any A/C system component it’s important to replace any compressor oil lost during parts change. A low oil level can starve the compressor for oil and lead to compressor failure. BEWARE: Do not overfill too much oil will hinder cooling performance. General guidelines for replacing oil when changing components:
• Accumulator • Compressor • Condenser • Evaporator • Hoses
-
- -
-
2.0oz 1.4oz 1.0oz 2.0oz
- 1.0oz • Receiver drier - 1.0oz
The total oil added to compensate for parts replacement should NEVER exceed total oil capacity for system. It’s always recommended to follow OEM recommendations.
sector, where he also has professional experience. “Fifteen or 20 years ago, we were lucky to be able to communicate with a driver and now we can monitor video and driving habits in real time,” he said. While the process of flagging incidents took a leap forward when technology was developed to allow drivers to press a button to create a video marker of a particular incident, transportation personnel were still left with the onerous task of manually pulling a hard drive and scrolling through images to reach the incident in question. Wireless systems and cellular routers have changed all that. “Te driver can send real-time alerts so if there’s an incident, like bullying or an accident, the driver hits the panic button sending an alert to a pre-configured contact. Since the bus has a cellular modem, it can be viewed immediately,” Guzallis explained. Real-time alerts can also be installed to record mechanical
occurrences, hard braking, speeding, sharp turns or traveling more than 5 mph with an extended stop arm, which automatically download such data to designated computers, tablets or cell phones as soon as the vehicle arrives back at the bus yard. With the nationwide expansion of 4G and 5G – the fourth and fifth generations of broadband cellular network technology – camera clarity is only getting better. “Your video quality can be configured to your data usage. If
you need to conserve data use, you’d configure to less quality. For better quality, you’ll increase your data use,” Guzallis said. “As cellular speeds get faster, it’s going to improve video quality and the amount of meta-data that can be gathered.” Poag, whose district contracts with Angeltrax, said he has found big data gathered through geo-fencing to be a powerful efficiency tool. Geo-fencing uses GPS or radio frequency identification (RFID) to invisibly stake out boundaries that record when a device enters or exits the zone. With its vendor’s help, the Greenville district has geo- fenced nearly 100 locations in order to receive records of when each bus arrives and departs a specific area.
“It feels like Christmas every day when we’re able to look
4802 W. Colonial Drive | Orlando, FL. 32808 Phone: 866-349-6928
buspartsexperts.com See Us At TSD Booth 421
46 School Transportation News • MARCH 2018
_0318_TSDProgram_FP.indd 1 2/8/18 4:10 PM
live into a bus when a driver is having a problem. I know what’s on the top of the mountain may become the
valley in the future, but we’re very appreciative of where we are today with technology.” — David Poag
Greeville County Schools
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