GARN® Technical Service Bulletin: Potentially Defective Anode Rods
Each GARN unit has the following number of anode rods:
MODEL
NUM. OF ANODE RODS
Recommended removal procedures:
1. When removing the rods, please catch the slough/debris that falls off the rod instead of letting the rod debris fall to the bottom of the tank. A simple method for doing this is to buy a pool leaf rake with extension pole from a local retailer and have a helper hold the net underneath the anode rod as it’s removed. Another method is to attach bucket to a handle/pole:
WHS-1000 WHS-1500 WHS-2000 WHS-3200
1 1 2 3
ADDRESSING WHITE FLUFF
Customers with anode rods exhibiting this issue may experience a white fluff that appears as a “cloud” on the bottom of the tank and on the heat exchanger tubing. For customers that have this condition, Dectra is recommending that the fluff be siphoned out. Use a standard garden hose and wand capable of reaching the problem areas and siphon as much of the fluff out as possible. If needed, top off the unit with filtered, clean fill water from the original fill source.
Figure 6: Place a Bucket/Net Underneath Anode Rod When Removing the Rod
Figure 7: Catch the Anode Rod Debris and Remove the Rod 2. After the rods are removed, plug the holes with a ¾” NPT plug. If only the steel core remains on the rod, the rod can be used as the plug. 3. Remove any and all anode rod debris on the bottom of the tank using the swimming pool leaf rake (or other method).
Figure 8: White Fluff on top of Reaction Chamber Tubing. Picture taken from manway access with unit filled.
Date: 20151021
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