High voltages appear at several points inside the ATevo. Use extreme caution when working inside the enclosure. Do not attempt to work inside ATevo unless you are a qualified technician or electrician.
Disconnect and lock out all power from ATevo before starting to remove or replace any components. Turn OFF ac power at the distribution panel upstream from the ATevo. Disconnect the battery from the DC Output Circuit Breaker (CB2+/-). Wait several minutes to allow voltages in dc filter electrolytic capacitors (C1x/C2) to bleed off.

14.1.1 Keeping ATevo Clean

If it should become necessary to clean this equipment, disconnect ATevo from its power sources first. Do not use liquid cleaners, aerosols, abrasive pads, scouring powders, or solvents such as benzene or alcohol. Use a soft cloth, lightly-moistened with a mild detergent solution. Let surface dry fully before reconnecting power.

At least once a year, vacuum all vented surfaces of the enclosure to ensure an adequate supply of cooling air. ATevo chargers are cooled by natural convection.

In an extremely dusty environment (especially if airborne dust is conductive), carefully vacuum out the interior. Clean the surfaces of circuit boards, and clean around electrical terminals.

ATevo is rated for operation up to 122 °F / 50 °C. If the installation is in a warmer environment, or at an elevation over 3000ft / 914m, contact your sales representative for operating information.

14.1.2 Checking Power & Signal Connections

Check the tightness of all field connections inside the ATevo, and connections to the battery. A loose or corroded connection at the battery terminals can be a fire or explosion hazard, and may cause erroneous operation of ATevo.

14.1.3 Checking Remote Sense Wiring – optional

If you wired ATevo for remote sense, check the signal connections to the battery or load, making sure insulation is in satisfactory condition. If there is a failure of the remote sense signal wiring, ATevo will generate an alarm.

14.1.4 Checking Temperature Compensation Probe – optional

If you are using the optional Temperature Compensation Probe (A10), confirm the probe is securely installed. Make sure the connectors and the wiring from the probe to ATevo are in satisfactory condition. If there is a failure of the temperature compensation probe, or the wiring, ATevo will generate an alarm.

14.1.5 Measuring Output Ripple Voltage

Measure ac ripple at the battery terminals at least once a year, using an rms responding ac voltmeter. If the battery Ampere-hour capacity is at least four (4) times the output current rating of ATevo, the ripple voltage should be no higher than the value featured in the specifications in Appendix A.

Last modified: 2 August 2023