Table of Contents
SMA Solar Technology AG
Maintenance ManualSCCPXT-E7-WA-en-374
5.2 Reading Off Disturbance Messages .............................................................................................................. 30
5.2.1 Reading Off Error Messages via Touch Display............................................................................................ 30
5.2.2 Reading Off Disturbance Messages via the User Interface .......................................................................... 31
5.2.3 Displaying the Event Report............................................................................................................................. 31
5.2.3.1 Enabling Automatic Read-Out of Events........................................................................................................ 31
5.2.3.2 Displaying and Downloading the Event Report............................................................................................ 31
5.3 Acknowledging Disturbance Messages......................................................................................................... 31
5.3.1 Acknowledging Disturbance Messages via the Key Switch ......................................................................... 31
5.3.2 Acknowledging Disturbance Messages via the User Interface..................................................................... 32
5.4 Remedial Action in Case of Disturbances...................................................................................................... 32
5.4.1 Inverter Behavior in Case of Disturbances ..................................................................................................... 32
5.4.2 Content and structure of the error tables........................................................................................................ 34
5.4.3 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid .................................................................... 34
5.4.4 Error Numbers 34xx to 40xx - Disturbance on the PV Array ....................................................................... 35
5.4.5 Error Numbers 6xxx to 9xxx - Disturbance on the Inverter........................................................................... 37
5.4.6 Displaying Disturbance Messages for Active Power Limitation .................................................................... 40
5.4.7 Displaying Disturbance Messages for the Reactive Power Setpoint ............................................................ 41
6 Maintenance................................................................................................................................. 42
6.1 Safety during Maintenance ............................................................................................................................ 42
6.2 Maintenance Schedule and Consumables.................................................................................................... 43
6.2.1 Notes on Maintenance Work ......................................................................................................................... 43
6.2.2 Maintenance Work Every 24 Months............................................................................................................ 43
6.3 Repair Schedule and Spare Parts................................................................................................................... 44
6.3.1 Information on Repair Work............................................................................................................................ 44
6.3.2 Demand-Based Annual Repairs ...................................................................................................................... 45
6.3.3 Repairs every 10 Years ................................................................................................................................... 45
6.3.4 Repairs every 12 Years ................................................................................................................................... 45
6.4 Maintenance Work ......................................................................................................................................... 45
6.4.1 Maintenance work with supply voltage present ............................................................................................ 45
6.4.1.1 Checking the Fans........................................................................................................................................... 45
6.4.1.2 Checking the Heating Elements and Hygrostat ............................................................................................ 46
6.4.1.3 Inverter with Low-Temperature Option: Cleaning the Heating Elements..................................................... 47
6.4.1.4 Inverter with Low-Temperature Option: Checking the Heating Elements .................................................... 48
6.4.1.5 Checking the Function of the UPS.................................................................................................................. 50
6.4.2 Maintenance Work in Disconnected State..................................................................................................... 51
6.4.2.1 Performing the Visual Inspection .................................................................................................................... 51
6.4.2.2 Analyzing the Temperature Indicators........................................................................................................... 51
6.4.2.3 Cleaning the Ventilation Plate........................................................................................................................ 53
6.4.2.4 Cleaning the Air Duct, Ventilation Grids and Air Intake............................................................................... 53
6.4.2.5 Cleaning the Interior ....................................................................................................................................... 55
6.4.2.6 Checking the Seals ......................................................................................................................................... 56
6.4.2.7 Checking the Latches, Door Stops and Hinges............................................................................................. 56
6.4.2.8 Checking the Inverter Surface........................................................................................................................ 57
6.4.2.9 Checking the Fuses/Disconnection Blades ................................................................................................... 58
6.4.2.10 Checking the Bolted Connections of the Power Cabling ............................................................................. 58
6.4.2.11 Checking the Labels........................................................................................................................................ 59
6.5 Repair Work..................................................................................................................................................... 61
6.5.1 Reading off the Replacement Interval Meter.................................................................................................. 61
7 Periodic Actions ............................................................................................................................ 62
7.1 Mounting and Disassembly Work.................................................................................................................. 62
7.1.1 Disassembling and Mounting the Panels........................................................................................................ 62
7.1.2 Disassembling and Mounting the Protective Covers...................................................................................... 63
7.1.3 Disassembling and Mounting the Ventilation Grids....................................................................................... 64
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