WATER
TREATMENT
Water treatment is the responsibility Of the user. The treatment of water,
care of cleaner and accessories, are beyond the control of the manufacturer.
Provisions for water treatment, when required, should be planned and installed
prior to placing cleaner in service.
In general, all water used in a modern cleaner must:
Have controlled or zero hardness,
A.
B.
Have controlled or zero free oxygen,
c.
Have sufficient alkalinity (pH).
Normal
Hardness:
In normal cleaning operations and when water hardness is not excessive (under 15
Compound
grains), the use of quality cleaning compounds such as
and Liquid Concentrates, when used in recommended amounts, will properly treat
However, even under the most ideal con-
water for the conditions outlined above.
ditions, hard water will, over a period of time, deposit some scale within the
cleaner's coils.
The build-up of scale (mineral deposits) is relative to type of hardness, quality
Removal of
of compounds or concentrates used, and hours per week of operation.
this scale is quite simple through the use of a quality inhibited acid, such as
Coil Descaler.
The frequency of descaling should not exceed
two to three times per year.
Excessive descaling is indicative of poor quality
soaps, inadequate usage, or excessive water hardness.
Excessive
Hardness:
If the water hardness is excessive and cannot be controlled by use of quality
compounds and, IN ALL CASES WHERE SUCH COMPOUNDS CANNOT BE USED, a means of
removing mineral hardness from the water must be used prior to supplying the
water to the cleaner.
Ion exchange type softener is the most common method used. The size of the
softener is dependent upon the gallonage required between regenerations, maximum
flow rate, hardness of the water, and regeneration cycle desired either of the
manual, push-button semi-automatic, or full automatic type.
Free Oxygen and Other Gases:
While ion exchange type water softening will eliminate coil scale formation, and
filter out much of the sludge (suspended solids), it will not remove nor control
excessive oxygen or other gases . . . the cause of interior corrosion of heating
coils and plumbing.
