Its condition, contamination, previous application and compatibility may be uncertain. A seller's statement that the motor runs does not establish suitability for your installation.
What the observation means
Safe fitting and approved connections remain separate questions. A used unit can differ from the product version shown in a current catalogue.
A useful next step
Obtain the exact identifiers and available records before any decision. Do not connect it temporarily to see whether it works. Appropriate assessment should address the whole installation, and this breakdown service should not be assumed to include new fitting work.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.