Marley Primus P11, User Manual

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The structure of your Primus consists primarily of galvanized steel,
therefore your water treatment program must be compatible with
zinc. In working with your water treatment supplier, it is important
that you recognize the potential effects on zinc of the specific
treatment program you choose.
Cooling Tower Cleaning:
Any evaporative-type cooling tower must be thoroughly cleaned on
a regular basis to minimize the growth of bacteria, including Legionella
Pneumophila, to avoid the risk of sickness or death. Service personnel
must wear proper personal protective equipment during
decontamination. Do NOT attempt any service unless the fan motor
is locked out.
Operators of evaporative cooling equipment, such as water cooling
towers, should follow maintenance programs which will reduce to an
absolute minimum the opportunity for bacteriological contamination.
Public Health Service officials have recommended that “good
housekeeping” procedures be followed, such as: regular inspections for
concentrations of dirt, scale, and algae; periodic flushing and cleaning; and
the following of a complete water treatment program including biocidal
treatment. See Tower Startup instructions on page 18.
The visual inspection should take place at least once a week during the
operating season. The periodic flushing and cleaning should be done
before and after each cooling season, but in any event at least twice a year.
The louvers, drift eliminators, and easily accessible fill surfaces should be
flushed by use of a moderate-pressure water nozzle, being careful not to
cause physical damage. A reliable water treatment program should be
installed and maintained. Filtration devices may be employed to reduce the
suspended solids concentrations, thus increasing the effectiveness of the
water treatment program. See Tower Startup instructions on page 18.
Blowdown:
A cooling tower cools water by continuously causing a portion of it to
evaporate. Although the water lost by evaporation is replenished by the
makeup system, it exits the tower as pure water—leaving behind its burden
of dissolved solids to concentrate in the remaining water. Given no means
of control, this increasing concentration of contaminants can reach a very
high level.
Maintenance
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Warning
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Note