Introduction

This topic provides details to help industrial support engineers, field technicians, and ChargePoint's commissioning team identify and correct Express 250 bugs.

If Express 250 charging station is being paired, then see the information given under "Pair the Charging Station" chapter of the Express 250 Installation Guide

Power On the System

The Express 250 charging station is powered on by the installation team at the site’s electrical panel, immediately after completing installation. The charging station does not have a separate power switch.

When power is turned on at the panel after it is first installed, the station runs a self-diagnostic that includes:

Electrical safety checks
Lighting checks
Display panel visual checks
Component operation checks (such as fans)
Installation Wizard process (allows installer to complete configuration and pinpointing of the station on user maps)
Network connectivity checks

When power is turned on at the panel after servicing or a power outage, the station runs a self- diagnostic to ensure safe and correct operation:

Electrical safety checks
Lighting checks
Display panel visual checks
Component operation checks (such as fans and contactors)
Network connectivity checks

If any errors are found, the station displays error codes on the website dashboard.

Power Off the System

The Express 250 does not need to be powered off except during service. The charging station does not have a separate power switch. The service technician turns off power at the electrical panel before beginning work. There is no need for a software command to power off the station; hardware is not harmed by disconnecting the circuit’s breaker.

Do not shutdown the power when a vehicle is charging.

Shunt trip wiring (wires that can be run to a separate disconnect switch) is available as a standard feature on the Express 250. Whether this feature is used, and where the switch is located, varies by site. For more information on how shunt trip wiring is designed and implemented, refer to the Express 250 Site Prep Guide and the Express 250 Installation Guide.

You must be a licensed electrician and complete an online training class to become a ChargePoint Certified Installer or Service Technician, and to get a login for ChargePoint. If you do not complete this training, you are unable to complete installation or service procedures.

Go to https://www.chargepoint.com/partners/training-certification.

RISK OF SHOCK. Before performing any procedure, the technician must disconnect the power to the charging station at the service panel. Follow local code to de-energize the applicable circuit and lockout/tagout the upstream breaker before proceeding. Use a multimeter and check that the power is off. Keep power off for the circuit until all cover panels are correctly reinstalled and the work is complete. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN SERIOUS INJURY, LOSS OF LIFE, OR PROPERTY DAMAGE.

Configure System Behavior

ChargePoint offers its station owners a variety of software features to customize operation, such as:

How to set pricing and billing methods for station use
Who is allowed to use the station
Waiting lists if the station(s) are already full
How to display simple messages on the station

All configuration is done on the ChargePoint website for station owners. You are issued a username and password during the station purchase process. Log in at:

na.chargepoint.com or eu.chargepoint.com.

Materials and Parts Required

With regard to what materials to bring for doing repair and maintenance whether it is a standalone or a paired Express 250 charging station, see the materials mentioned under Required Tools and Materials section of the relevant Express 250's service guide.

Personal Protection Equipment (PPE)

Follow national, local or site specific PPE requirements. In the event of a conflict of PPE protocol, follow the strictest guidelines.

Working gloves (inserts not necessary)
Safety glasses
Safety shoes
Safety vest (if required)
Hard hat

In addition, ensure you have the following tools and materials:

Calibrated Digital Torque Wrench
All tools listed in the Express 250 Installation Guide
Inspection mirror
Lock out/tag out equipment
Permanent marker
ChargePoint approved service tent
Coolant
All tools listed in any Express 250 service guides for replacement parts or the tools listed under Required Tools and Materials section of the Express 250 Preventive Maintenance Guide as necessary.

Labels Located

As for the labels' location:

The CE label is located on the left side below the swing arm and above the light ring when facing the station.
The ratings label is located on the rear and that label is also located below the swing arm.

Stopping an Active Charging Session

When you need to stop charging your vehicle, follow the Correct Method (and not the Wrong Method) given below.

Wrong Method:

For all DC charging, when you need to stop charging your vehicle:

Do not use the CCS Combined Charging System handle button as a "stop" button during active charging.
The adapter locks the CCS Combined Charging System latch.
So, never press this CCS Combined Charging System handle latch button (that is shown highlighted within the yellow circle in the illustration below), unless the charging has stopped and the vehicle has unlocked the latch:

Reason:

Because doing so will lead to deformed and broken latches, which will in turn, lead to expensive handle and cable replacements.
Instead, follow the instructions given below under Correct Method.

Correct Method:

Follow either of these two instructions:

Stop the charging session from the vehicle.
Use the Stop button on the Charging Station's Display.

For all DC charging: Only press the latch button after charging has been stopped by the vehicle or the station (screen, app).
For all AC charging: In most cases, most vehicles don't lock the port. So, using the latch to stop charging is normal, most of the time.

For All Tesla Vehicle Drivers:

In Tesla vehicles the adapter always remains locked to the CCS Combined Charging System handle while inserted in the vehicle, even after charging has stopped. The charge port must be unlocked from the vehicle to remove the handle and adapter together.
The handle button should never be used except to remove the adapter from the plug after removing the adapter and handle from the port.