The Allen-Bradley 21T-351893-A04 Kit is a LiquiFlo inverter power board can be installed with the following procedure. First, ensure that every inverter parameter is reset to the default state by configuring the inverter parameter 197 to 1. The 197 parameter value changes to 0 as soon as 1 is typed into the memory. This configuration eliminates fault 100, which is the parameter checksum, and fault 107, which represents the replaced MCB-PB device. Second, reset the operation to the default, which results in fault 48, also referred to as the Params Defaulted setting. Note that this is an information fault only and it will be cleared. If this fault on the drive still exists after the operators attempt to clear it, it is recommended to troubleshoot the board based on the current fault. Third, all the drive parameters should be reprogrammed. When replacing the Allen-Bradley 21T-351893-A04 LiquiFlo inverter power board, drive fault 106, also known as Incompact MCB-PB, may occur. This means that the new inverter power board is incompatible with the earlier inverter control board and it would be best if the users changed the previous control board as well.

The Allen-Bradley 21T-351893-A04 inverter power board is a LiquiFlo 2.0 power module replacement parts (for the LiquiFlo Frame 3 size drives only). This inverter power board has conformed to international agency certifications such as the CSA List, CE Mark, cUL and UL List Class I Division 2, Groups A, B, C, and D standards. The 21T-351893-A04 inverter power board is commonly used in applications in the steel industry, power industry, glass industry, and the food processing industry. It has an ambient storage temperature ranging from -40 to +65 degrees Celsius (-40 to +149 degrees Fahrenheit) and an operating temperature range between 0 and 55 degrees Celsius (32 and 131 degrees Fahrenheit) when it is installed inside a NEMA/UL Type 1 enclosure, or an operating temperature range of 0 to 40 degrees Celsius (32 or 104 degrees Fahrenheit) when it is not installed in a NEMA/UL Type 1 enclosure.