16
Fluid Cooler Inspection and Maintenance
Microorganisms including Legionella bacteria can exist in premise
plumbing including fluid coolers. The development of an effective
water management plan (WMP) and implementation of maintenance
procedures are essential to prevent the presence, dissemination
and amplification of Legionella bacteria and other waterborne con-
taminants throughout premise plumbing. Before operating the fluid
cooler, the water management plan and maintenance procedures
must be in place and regularly practiced.
In addition, the following steps are recommended:
Do NOT attempt any service unless the fan motor is locked out.
• Consult a knowledgeable water treatment professional to clean and treat
your cooling tower. See
Fluid Cooler Startup
section of this manual.
• Fluid coolers must be cleaned and disinfected regularly in accordance with
ASHRAE Standard 188 and Guideline 12.
• Workers performing decontamination procedures must wear personal
protective equipment (PPE) as directed by their facility safety officer.
• Fluid coolers must be visually inspected regularly to assess signs of bacte-
rial growth, appearance of debris and scale on drift eliminators and general
operating conditions. Refer to ASHRAE Standard 188 and Guideline 12
for specific frequency recommendations.
• Replace worn or damaged components.
To minimize the presence of waterborne microorganisms, including Legionella,
follow the water management plan for your facility, perform regularly scheduled
fluid cooler inspections and maintenance, and enlist the services of water
treatment professionals.
For additional technical support, contact your Marley sales representative.
References: ashrae.org. Search “ASHRAE Standard 188” and “ASHRAE
Guideline 12.”
cdc.gov. Search “Water Management Program.”
Water Collection Basin Access / Air Inlet Louver Removal:
Some maintenance procedures require access to components located in the
water collection basin. These maintenance procedures can be performed from
the perimeter of the fluid cooler without entering the basin. To access the
basin, one or more of the air inlet louver frames must be removed. To remove,
Warning
maintenance
