SKVF Evaporative Cooler
Installation Instructions and User Manual
www.neptronic.com
Page | 46
Water Sampling and Testing (Hygiene)
Legionella disease can be fatal. Maintain and control the water system according to the local
Health & Safety regulation codes.
The SKVF has been designed to minimise any possible risk of Legionellosis growth. However, it is still necessary to
perform the following checks in order to reduce the growth of Legionellosis:
•
Conduct a risk assessment of the water system by a competent authority.
•
Implement appropriate inspection and control measures.
•
Maintain water temperature below 68°F [20°C].
•
Maintain clean, drinking quality water supply.
•
Avoid water stagnation.
•
Carry out regular microbiological testing of water (counting the number of bacterial units).
Refer to the ISO 5667-1 standard (Water quality - Sampling - Part 1: Guidelines for the design of programs
and sampling techniques)
•
Clean and disinfect the system regularly. Refer to Legionella and the prevention of legionellosis, by World
Health Organization 2007, ISBN 92 4 156297 8 for more detailed advice on control measures.
•
Apply disinfection measures based on the results of visual inspection and microbiological tests.
•
Record and evaluate the results obtained during verifications, servicing and microbiological testing in order to
improve the control plan.
If the SKVF is stopped for extended periods (over 24 hours), make sure the tank at the bottom of the unit and the water
supply hose to the unit are drained, unless there is a regular renewal of the water system. Contamination of the water
system can cause the development of Legionella bacteria that can be fatal.
Table 11 - Proposed Plan of Control and Disinfection According to Results of Microbiological Testing of Water
Aerobic Heterotrophic Count
(CFU/ml)
Required Action
10,000 or less
Acceptable control. No remedial action required.
More than 10,000 and up to 100,000
Disinfect the SKVF (refer to t
he Disinfection
section on page 48); t
hen
perform another
microbiological test of the water after disinfection
to ensure
that
the result is n
ow
10,000
CFU/ml
or less
.
More than 100,000
Immediately stop the SKVF and perform a manual cleaning and disinfection. Corrective
action must be undertaken to reassess the level of hygiene control and a new risk analysis
of the water network and system.
Summary of Contents for SKVF 15 Series
Page 55: ...Notes ...
