Cleaning The Heat Exchanger - Jandy Lite 2 LG Installation And Operation Manual

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4E-2. Cleaning the Heat Exchanger
Caution
Black carbon soot buildup on a dirty heat
exchanger can be ignited by a random spark or
flame. To prevent this happening, dampen the
soot deposits with a wet brush or fine water
spray before servicing the heat exchanger.
A light accumulation of soot or corrosion on the
outside of the tubes can be easily removed with a wire
brush after the heat baffles are removed. Follow the
instructions in Section 2 to remove the heat exchanger.
Clean the heat exchanger using the following
steps:
1. Remove the front and rear headers from the
tube assembly (see Section 2).
2. Remove the tube baffles by first removing
the spring retaining clip, then lifting out the
baffles.
3. Clean the exterior of the baffles using a wire
brush. READ THE CAUTION AT THE
BEGINNING OF THIS SECTION!
Notes:
1. When pressure relief valve is used, it must be removed and the hole plugged, as shown when pressure testing
heat exchanger.
2. Remove the plug and reinstall pressure relief valve before turning on filter pump.
3. Be sure tubes are dry, to make reaming easy.
Figure 28. Heat exchanger cleaning.
4. Ream the insides of the tubes (see Fig. 28).
5. Take the reamer out often to remove lime
powder and prevent the drill from binding in
the tube.
NOTE: Use only the correct carbide tipped
reamers which are available from Zodiac Pool
Systems, Inc.
6. Install new gaskets. Do not reuse the old ones.
7. Tighten the header bolts progressively,
starting with the two outside bolts. Maximum
torque is 20 inch pounds (27 Newton-meters
[Nm]). Do not over-tighten.
8. Replace the baffles and retaining clip.
9. Pressure test the heat exchanger for leaks
with city water before reinstalling (see Fig.
28).
10. When placing the heat exchanger back in the
boiler, carefully hold the ceramic fiber apart
and lower the heat exchanger into place.