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Disable Direct Hazards (cont.)

Turn Off the High-Voltage Disconnect Switch

Figure 16.

High-Voltage Disconnect Location

1.

High-Voltage Disconnect cover

2.

High-Voltage Disconnect Switch (OFF position)

WARNING: To prevent personal injury and / or death, ALWAYS REMEMBER the High-Voltage

Disconnect Switch only disables the vehicle’s high-voltage system.

The High-Voltage Disconnect

Switch does NOT turn OFF the voltage in the S-box, the high-voltage batteries, and the cables
between these items. The vehicle 12 volt system could still be energized. ALWAYS turn OFF both the
High-Voltage Disconnect switch and the 12 Volt Battery Disconnect Switch whenever interacting with
a damaged vehicle. NEVER touch ORANGE cables without wearing appropriate Personal Protection
Equipment (PPE).

1.

Open the high-voltage service disconnect switch cover (Figure 16, Item 1). The cover has a lock. In
emergency and if keys not available open by force.

2.

Turn the BLACK high-voltage service disconnect switch to OFF position (Figure 16 Item 2).

3.

Lock the switch with a padlock to avoid anyone from turning it back ON.

Components in high-voltage zone 2 and high-voltage zone 3 remain live after the high-voltage disconnect switch
is turned OFF. These zones are located entirely between the frame rails on the underside of the vehicle and are
labeled as indicated in Figure 2 and Figure 3.

4328785R1

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© 2021 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

Summary of Contents for IC Bus Electric CE Series

Page 1: ...Hood Overview Vehicle Systems and Components High Voltage Battery Drive Motor High Voltage Cables Immobilization Disable Direct Hazards Stored Energy Liquids Hazardous Material Emergency Cleanup In C...

Page 2: ...t personal injury and or death ALWAYS REMEMBER the 12 Volt Battery Disconnect Switch only disables the vehicle 12 volt system NOT the high voltage battery system WARNING To prevent personal injury and...

Page 3: ...le can be single or part of a combination Also any vehicle components that are ORANGE in color and or ORANGE with stripes identify high voltage components High voltage components in the vehicle are di...

Page 4: ...UME the high voltage batteries high voltage cables and high voltage components remain live and dangerous Contact with the high voltage battery pack or high voltage component internals may result in se...

Page 5: ...located as shown in Figure 4 This is called a 2 String configuration 3 3 2 0000469816 LEVEL 1 LEVEL 2 LEVEL 3 Figure 5 High Voltage Isolation Levels Zones for 3 String Vehicles Viewed from Bottom If t...

Page 6: ...ntally come in contact On an IC Bus Electric CE Series WITHOUT any damage the ignition 12V disconnect switch and high voltage disconnect switch can be operated without any special high voltage Persona...

Page 7: ...oor and over the driver side window with BLUE stripes the YELLOW IC logo and BLUE ELECTRIC lettering Additionally there is an IC Bus Electric CE Series badge on the left side of the entrance door and...

Page 8: ...d Under hood the IC Bus Electric CE Series has several high voltage modules which can be distinguished by the ORANGE cables and high voltage labels 4328785R1 8 2021 Navistar Inc All rights reserved Al...

Page 9: ...The IC Bus Electric CE Series can be distinguished from common school bus models by the charging station icon Figure 8 Item 1 on the top left of the instrument cluster 9 4328785R1 2021 Navistar Inc A...

Page 10: ...rd Charger OBC 2 7 High voltage power steering pump 8 High Voltage Distribution Unit HVDU 9 Charge port front AC DC and Onboard Charging Interface OCI module 10 Air brake pressure tanks 11 Battery The...

Page 11: ...igh Voltage and 12V Battery Service access covers Figure 10 Items 1 2 are located on the driver side of the vehicle Each cover is equipped with a lock In an emergency situation if keys are not availab...

Page 12: ...age batteries are located under the bus cabin between the frame rails Four battery locations are between the axles and one is located behind the drive unit The rearmost pack of the front locations and...

Page 13: ...bles High voltage cables are colored in ORANGE and or ORANGE with stripes Never cut breach or stress ORANGE high voltage components or cabling 13 4328785R1 2021 Navistar Inc All rights reserved All ma...

Page 14: ...tor button 3 Vehicle key OFF position 1 Push Neutral N button Figure 14 Item 2 2 Pull the parking brake Figure 14 Item 1 3 Turn the key Figure 14 Item 3 to the left to turn OFF ignition 4 Remove the k...

Page 15: ...RNING To prevent personal injury and or death ALWAYS REMEMBER the 12 Volt Battery Disconnect Switch only disables the vehicle 12 volt system NOT the high voltage battery system 1 Open the 12 Volt Batt...

Page 16: ...t Switch whenever interacting with a damaged vehicle NEVER touch ORANGE cables without wearing appropriate Personal Protection Equipment PPE 1 Open the high voltage service disconnect switch cover Fig...

Page 17: ...vehicle S box Figure 17 Item 1 is located between the vehicle frame rails forward of the rear axle The Manual Service Disconnects MSD located on the S box are accessible from the driver side of the v...

Page 18: ...removed by pressing down the locking tab while pulling the release handle downward approximately 45 degrees Removing the two Manual Service Disconnects MSD physically disconnects high voltage after th...

Page 19: ...Breathing Apparatus SCBA when fire is involved Fires in crash damaged electric vehicles could emit toxic or combustible gasses Small amounts of eye skin or lung irritants may be present If exposed ri...

Page 20: ...OFF if possible 2 Recover the vehicle 3 Drain the water out of the vehicle 4 Initiate the deactivation of the Main Battery Disconnect Towing Transportation Storage Towing The preferred method is to to...

Page 21: ...accident assistance and recovery of vehicle with high voltage systems can be found at www nfpa org Training and Events By topic Alternative Fuel Vehicle Safety Training www vda de en services Publicat...

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