Page 16 | Pentair Water Commercial Pool and Spa |
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Caution
Black carbon or green soot on a dirty heat exchanger can, under certain conditions, be ignited by a random spark or open flame. To prevent this unlikely occurrence, dampen the soot deposits with wet brush or fine water spray before servicing or cleaning the heat exchanger.
9.Clean heat exchanger using a wire brush to remove soot and loose scale from the unit. Clean fallen debris from bottom of heater. Make sure burner ports are clear and pilot assembly is free of debris.
10.Reassemble in reverse order and be sure the heat exchanger baffles are replaced.
11.The gas and electric controls installed on the heater are engineered for both dependable operation and long life, but the proper functioning of these components is necessary for safe operation of the heater. It is strongly recommended that the basic items be checked by
acompetent serviceman every year and replaced when necessary. The basic controls are:
a.Water temperature controls.
b.Pilot safety system.
c.Automatic electric gas valve(s)
d.Flow switch.
12.Low water cutoffs should be inspected every six
(6) months, when provided.
NOTE: The warranty does not cover any damage caused by lack of required maintenance or improper operating practices.
13.Pool Water Chemistry
The mineral content of the pool water increases every day. This is due to the natural evaporation which removes only distilled water and leaves the minerals behind. The regular addition of algicidal and sanitizing chemicals also adds greatly to the mineral content of the pool. If the concentration of minerals in the pool is permitted to become too high, the minerals will precipitate out of the water and deposit onto the walls of the pool, in the filter and in the tubes of the heat exchanger.
For this reason it is very advantageous to drain the pool regularly (at least every two years). This precautionary measure will save the cost of expensive repairs to the finish, filter system and heater.
Another important safety precaution - always keep the pH of the pool water between 7.3 and
Figure 16. Main Burner Flame Pattern.
7.7.This will add years to the life of the pool finish, filter system and heater.
Most algicidal and sanitizing chemicals contain sodium hypochlorite, while others contain calcium hypochlorite. Sodium is not a scaling chemical but calcium is. When using calcium hypochlorite it is especially important to frequently check the pH of the pool and to change the pool water when the dissolved solids indicate an excessive mineral content.
SECTION 5.
Troubleshooting
For proper service and problem diagnosis of the heater and heater system, the following tools are required:
a.Gas pressure test kit with range from zero to 14 W.C. Either a slack tube manometer or an accurate gas pressure gauge is acceptable with proper adapters to connect to the available fittings in the line and on the gas valve.
b.
0 to 500 volts A.C.
0 to 1000 ohms continuity.
0 to 50 millivolts.
c.Tube cleaning kit consisting of reamer, stainless steel brush, speed handle and handle extensions.
d.A pool thermometer with a proper range.
e.A pressure gauge with proper range.