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EN/05.2019 © STULZ GmbH – all rights reserved
CYBERHANDLER 2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
8 7
Adiabatic system
In general, hygienic guidelines and standards relative to evaporative cooling installations (e.g
VDI2047-2, HSG274 part1, LCEP29, AI-32). must be observed.
In particular, the VDI 2047-2 regulation requires microbiological tests to be done by an
authorized and independent laboratory at least every three months.
Specific maintenance operation on the adiabatic system is required only in the periods when the
adiabatic system is in use and maintenance frequencies depend on the type of water treatment
used.
The recommended maintenance frequencies are given in the table of the chapter 8.2. periodic
maintenance and are partially based on the VDI 2047-2 regulation.
Depending on local regulations (in particular related to legionella control), it might be necessary
to adopt specific maintenance measures and intervals.
Make sure you are aware of the local regulations and apply them correctly.
Disinfection must be carried out by qualified personnel only.
When handling disinfectant, following safety instructions must be observed:
• Wear personal protective equipment (safety glasses, protective gloves,
protective clothes)
• Avoid direct contact with the disinfectant
• Follow the instructions on the safety data sheet of the product
• Do not drink, eat or smoke in the work area.
The cleaning and disinfection process must be as following:
• 1. Before applying disinfectant on surfaces, they must previously be perfectly cleaned, using a
soft cloth and fresh water, eventually adding neutral soap, in order to remove all dirt particles.
• 2. Rinse the surface with fresh water and dry it.
• 3. Apply disinfectant on all the surfaces with a spray or a rub-wipe, exercising slight pressure.
• 4. Rinse the surfaces with clean water.
Additional recommendation for cleaning and disinfection process:
• Apply the disinfectant evenly to the surfaces, without scrubbing or brushing.
• In case of using wiping utensils, choose materials that don’t excessively absorb the
disinfectant and don’t leave particles on the surfaces.
• After applying disinfectant, all utensils must be cleaned and dried.
• Follow the manufacturer’s instructions for dosing and using the product and use the suitable
dosing device.
• Prepare a new solution before every use. Do not store ready-to-use solution and use it for one
working day at most.
• When using alcohol-based disinfectant, adequate measures, must be taken to prevent
explosion and fire hazards:
- The prepared solution should not exceed 50 ml/m2
- Max. coverage should not exceed 2 m2 at any one time
- In case of large scale utilisation, working area should be enough ventilated
General cleaning and disinfection
