Thabiti Anyabwile @ http://purechurch.blogspot.com has started a series on the moral requirement for deacons.
Some Questions to Ask When Looking for Deacons Filled with the Spirit
1. Does the man put the ministry of the word and prayer above the "practical" needs of the church?
2. Is the person a servant?
3. Does the person evidence the fruit of the Spirit? (Gal. 5:22-23).
4. Does the person demonstrate Spirit-inspired wisdom?