I agree that the external parts of equipment should be cleaned before being sent to clinical engineering but there are several areas on infusion pumps etc that ward staff cannot clean .When doing a PPM or service I would consider a deep clean of all parts of equipment as part of our job and is easy to do while pumps etc are running flow test etc . I find antistatic foam cleaner ( RS ) is great for this and the equipment goes back into service looking like a proper professional service was done pride in ones work . Also I find if I return equipment looking fresh and new the user respect this and take care to try and keed it that way