Actually you would want to do a higher rep range when learning the clean, or any other quick movement, not a lower 3 rep or so. Also include most every other compound exercise for that matter. Getting the form, timing and speed of the lift will be very important at the first learning period. Higher reps do that.That is good insurance against future injuries through bad performance of an exercise.
The muscle response and impulse pattern, that are learned on any lift, is important just as well. That is why repping it out, with a very light weigh or even the empty bar is an important start. Flexibility comes in here also. 15 to 20 light reps sets, in many workouts, sets up the body very well for future heavier weights.
Even simple learned and done movements like squats and DL's are performed so badly that they invite injury's. Just checkout some of the video's on GetBig.
Cleans, and the Olympic lifts, can be transferred to BB'ing type exercises for 8-12 (general) reps once the correct form is learned. Do not need any super weight on the bar. For BB'ing, moderate weight will give an excellent muscle mass program. If you know what you are really doing and how to place them in a result producing training program.
Am familiar with the heavy first idea. Also the lighter first version, which suggest that this will ready and prime the body for a heavier work load to follow. Take your pick, neither is cut in stone. What works for you works for you. But they both affect the CNS strongly. Good Luck.
