Forgive me for being ignorant but doesnt pectic enzyme prevent fermentation????

I have had no trouble with mine and am almost done...will be tomorrow I assume.

From: Dave Royer <dave@droyer.org>
To: mba@thebarn.com; mnbrewers@yahoogroups.com
Sent: Friday, November 9, 2012 5:51 PM
Subject: [mnbrewers] Cider Question...slow start

Hey all your cider experts...so I picked up some cider last weekend and
am trying to ferment out 5 gallons using the "Chris Smith/Brewing TV"
method. 24 hours after pitching I am not seeing any activity. Am I
impatient or did I screw something up?

Here's what I have done so far:

5 gallons of cider
Added 5 Campden tablets, crushed up.
Let sit 48 hours in a sealed bucket with an airlock.

Add 2.5 tsp pectic enzyme

Let sit a couple hours

Aerated using an air stone in off an aquarium pump for 2o minutes or so.

Add:
2.5 tsp yeast energizer
5 tsp yeast nutrient
2 lbs golden brown sugar
2 vials WLP775 English Cider Yeast

The temp of outside of the plastic bucket has been 64 degrees since
pitching and there is temperature control in place.

Thoughts?

Thanks,

Dave