Download - CO2 Workshop Preparing the service sector for the introduction of alternative refrigerants
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CO2 WorkshopCO2 Workshop
Preparing the service sector for the introduction of alternative refrigerants
Preparing the service sector for the introduction of alternative refrigerants
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IdentificationDiagnosis
Leak detectionRecovery/Recycling
RepairRecharge
IdentificationDiagnosis
Leak detectionRecovery/Recycling
RepairRecharge
Considerations, procedures, tools in A/C service environment
Considerations, procedures, tools in A/C service environment
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Refrigerantidentificationcritical beforeservice begins
Refrigerantidentificationcritical beforeservice begins
Mobile air conditioning systems may contain CFC-12, HFC-134a,
any of a number of blends, hydrocarbons, or a mixture of any
of the above.
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System diagnosis System diagnosis
System pressures are normally a starting point for diagnosis of mobile A/C system problems.
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Electronic leak detection
Electronic leak detection
Detection and repair of air conditioning system leaks can
prevent further system damage.
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Recovery/Recycling Recovery/Recycling
Complete refrigerant recovery is
important in critical charge
systems.
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Systemrepair
Systemrepair
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But it’s just a simple Chevy…
But it’s just a simple Chevy…(Tech Talk on iATN) A new body control module repaired the A/C problem. Alldata never mentions this in diagnostic charts nor does GM. If you look at wiring diagram for compressor you will see it there. Signal is supplied from HVAC module to BCM on dark green/white wire in small gray connector, then back out on light green A5 wire in pink connector through DLC and on to PCM. DVOM showed power in to bcm but none coming out. Replaced bcm. Reprogram and relearn, had to recalibrate radio, can only be done with Tech2. Customer called back tonight and said air bag light stays on, probably more relearn to do. A/C still working fine though, very expensive fix when customer thought all he needed was a refrigerant charge. Used all GM parts, have learned that the hard/stubborn way. Problems with the refrigerant
circuit and components is usually simple. The challenge today is
electronics.
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Recharge Recharge
Accurate A/C system charge ensures proper
system operation and performance.
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Shopequipment,tools
Shopequipment,tools
Lifts, jacks,power tools
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ShopchemicalsShopchemicals
Solvents, cleaners, paint, propane
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ShopventilationShopventilation
Changes with the seasons
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ShopproceduresShopprocedures
Brazing, cutting, soldering, welding
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Underhood hazardsUnderhood hazards
Exposed belts, pulleys and fans present
danger of physical trauma. Burns and electrical shock are
also concerns.
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Underhood hazardsUnderhood hazards
Fans start without warning by
thermostats and other controls (or
even remote signal).
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Good adviceGood advice
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Next?Next? Service sector up to the challenge