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SUN2000-(100KTL, 110KTL, 125KTL) Series User Manual

This document describes the SUN2000-125KTL-M0,SUN2000-110KTL-M0,SUN2000-100KTL-M0,SUN2000-100KTL-M1 and SUN2000-100KTL-INM0 in terms of its installation, electrical connections, commissioning, maintenance, and troubleshooting. BOM number: 01074693, 01074694, 01074695, 01074695-001 and 01074695-002.

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Routine Maintenance

Routine Maintenance

To ensure that the solar inverter can operate properly for a long term, you are advised to perform routine maintenance on it as described in this chapter.

  • Before cleaning the system, connecting cables, and maintaining the grounding reliability, power off the system and ensure that the all DC switches on the solar inverter are OFF.
  • If you need to open the maintenance compartment door in rainy or snowy days, take protective measures to prevent rain or snow from entering the maintenance compartment. If unavoidable, do not open the maintenance compartment door.
Table 8-1 Maintenance list

Check Item

Check Method

Maintenance Interval

Cleanness of air intake and exhaust vents, and fans

  • Check whether there is dust on the air intake and exhaust vents. If necessary, remove the baffle of the air intake vent and clean the dust.
  • Check whether the fans produce abnormal sounds during operation.

Once every 6 to 12 months

System running status

  • The solar inverter is not damaged or deformed.
  • The solar inverter operates with no abnormal sound.
  • All solar inverter parameters are correctly set. Perform this check when the solar inverter is running.

Once every 6 months

Cables connections

  • Cables are securely connected.
  • Cables are intact, and in particular, the parts touching the metallic surface are not scratched.
  • Unused terminals and ports are locked by watertight caps.

The first inspection is 6 months after the initial commissioning. From then on, the interval can be 6 to 12 months.

Grounding reliability

Ground cables are securely connected.

The first inspection is 6 months after the initial commissioning. From then on, the interval can be 6 to 12 months.

Figure 8-2 Removing the baffle of the air intake vent

After the cleaning is complete, reinstall the baffle plate. Tighten the screws with a torque of 1.2 N·m.

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Updated: 2019-12-25

Document ID: EDOC1100087908

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