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Title: Servicing Air Conditioning Systems on Electric Vehicle

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Applies To: Electric Vehicles

CHANGE LOG

Please refer to the change log text box below for recent changes to this article:

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Countries: CANADA, UNITED STATES Document ID: 1k2300021
Availability: ISIS, Bus ISIS, NoiSIR_—— Revision: 1
Major System: ELECTRIC VEHICLE Created: 10/5/2023

Curront Language: English Last Modified: 11/3/2023

Other Languages: NONE Author: Josh Bowman
Viewed: 196
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DESCRIPTION

This document will guide the user through information required to know before servicing air conditioning systems on an electric vehicle

SYMPTOMS

Diagnostic Trouble Codes & Dashboard Indicator Lights:

DTC/Light [Description
N/A NA
Customer Observations or Concerns:

During any service event of the A/C system

SPECIAL TOOLS / SOFTWARE

lool Description Tool Number [Comments

Instructions Notes

Yellow Jacket Refrigerant

or equivalent: SAE J2788
Management System 37830

and J2788H Compliant

See machines manual

SAE J2788 compliant machines do
Inot have oil injection to avoid cross-
lcontamination of oils

R-134a POE Oil Injector 37957 - YellowJacket | or equivalent

Use ONLY on Electric Vehicles

R-134a PAG Oil Injector 37956 - YellowJacket | or equivalent

Use ONLY on Internal Combustion
Engines (ICE) Vehicles

SERVICE PARTS INFORMATION

: oti [Quantity
kit Description Part Number Requirea |Notes
N/A N/A NA N/A

Recommended Guidelines when servicing High-Voltage A/C Systems

To prevent personal injury or death, DO NOT attempt to service the High Voltage A/C
[system without proper trainin:

HV compressors require unique A/C refrigerant compressor oil that is non-conductive.
The specific type of oil is identified by the vehicle maker. All non-conductive POE oils are
ot the same.

As little as 1% standard PAG oil can reduce the dielectric properties of the approved POE
oils and damage the system.

Many of the A/C system parts will require replacement if the system is contaminated |

1, Use only SAE J2788 compliant machines and follow machine flushing procedures as per the A/C machine manufacturer BEFORE servicing an electric
vehicle

2. Where possible use a dedicated A/C machine for all EV A/C systems that use POE oil to prevent cross contamination

3. Itis best practice to empty the oil recovery bottle to understand how much oil is lost within the system during the recovery process for replacement
purposes

4, ALWAYS use a dedicated oil injector for each type of oil to avoid contamination. Refer to the accessories listed above as an example for PAG and POE
oil injectors

5. Refer to the proper sevice manual for recovery, evacuation and charge procedures

SYSTEM SPECIFICATIONS

TRANS-AIR A/C SPECIFICATIONS | FEATURE 048HEP | PRODUCTION 07/25/2023 TO PRESENT

REFRIGERANT CHARGE OIL FILL (additional)

VEHICLE MODEL R134a (2644032R1) POE/HAF68 Compressor PN

charged wi

[_ FRONT(LB) || REAR(LB) || FRONT(OZ) || REAR(OZ) | 3

Short Wheel Base (SWB), Standard A/C System 44 31 16 28
Short Wheel Base (SWB), High Performance A/C System 45 3 231 2.75
Long Wheel Base (LWB), Standard A/C System 4 43 1.6 32
Long Wheel Base (LWB), High Performance A/C System 44 43 23 32

PRO-AIR MODINE A/C SPECIFICATIONS | FEATURE 048CXZ | PRODUCTION 11/14/23 - 07/25/23

VEHICLE MODEL REFRIGERANT CHARGE OIL FILL (additional) Compressor PN
R134a (2644032R1) POE/HAF68 charged wi