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Section 9 - Routine Maintenance
1. Collect a small sample of the water to be used to fill
the outdoor furnace in a clean container.
2. Dip a pH test strip from the test kit in the water
sample. Shake excess water off the test strip.
Compare the color of the test strip to the chart
provided to determine pH level. The pH of the
treated water should be between 8.0 and 9.5.
3. Follow the instructions provided in the water test kit
to test the moly level of the treated system water.
Obtaining Treated Water Sample
A treated water sample from the outdoor furnace can be
obtained either from the valve on the hot water heater
(Fig. 68) or from the furnace drain valve (Fig. 69).
Fig. 68
Valve can be used
to obtain sample of
treated water from
furnace.
Fig. 69
Furnace
Drain
Location
Before collecting the sample, drain about a quart (liter)
of water; then carefully fill the sample container without
contaminating the sample. Be sure to properly close
the valve when finished.
Water Test Kits and Test Results
An important part of outdoor furnace maintenance is
controlling the quality of the water in the furnace.
DATE
pH LEVEL
MOLY LEVEL
Record the results of pH and Moly level tests in the table above.
If additional space is needed, record on a separate sheet of paper.
It is very important to keep record of water test results
(including the date, pH and Moly level). The pH and
Moly test strips and indicator have a shelf life of
approximately two years that can affect their accuracy.
Test kits should be stored in a dry area at room
temperature to obtain maximum accuracy over a longer
period of time.
Biological contamination can occur if the furnace is
not heated up to 185˚F immediately after filling it with
inhibitor and water as directed.
NOTE: ANY time water is added to the system,
it is extremely important to bring the water
temperature up to operating temperature (185˚F)
as soon as possible, even if it is during the off-
season. Failure to bring the water in the system
up to operating temperature immediately after
filling the system can allow bacteria present in the
water to multiply and may increase the potential
for corrosion in the sytem.
If the test indicates a significantly lower-than-
recommended pH level, add MolyArmor to increase the
pH level.
Maintenance Levels
Test the pH and moly levels after the first three months
and every six months thereafter, or after adding water to
furnace.
The pH of the water should be between 8.0 and 9.5.
If any other water quality issues are known, the water
should be conditioned or water should be supplied from
a different source.