Nortec ME Control - Manual (Page 58)

58 Maintenance
Recommended disinfection equipment
– Disinfection solution in accordance with manufacturers guidelines.
– Disinfection neutraliser (only if necessary).
– Disinfection solution test kit (to measure strength).
– Bucket of fresh water.
– Cleaning equipment.
– Mixing vessel / Measuring container.
– Risk assessment / test record sheets. Appropriate report/record
– Standard tools
– Appropriate PPE
– COSHH risk assessment / MSDS
6.9 Cleaning and disinfection method statement
Step 1 - Refer to the risk assessment
• Refer to the Manufacturers instructions and safety advice.
• Ensure the area is well ventilated.
• Ensure the Nortec ME system is OFF and isolated from external controls.
• If the unit is already in operation there is low risks, check for correct operation before cleaning
and dismantling.
Note: if there are concerns over condition of unit, drain unit, flush water supply, and disinfect
tank before starting cleaning work.
• Drain system, dismantle unit and scrub tank fully. For complete disinfection remove droplet separa-
tor banks (if applicable) and the evaporative cassettes to allow a full clean (refer to maintenance
section).
• Consider appropriate maintenance requirements at this time including parts replacement i.e.
replacing distribution hoses to ensure that these are also disinfected.
• Re-assemble the Nortec ME system (refer to installation manual).
Step 2 - Mix disinfection solution
• Mix disinfection solution following the manufacturers instructions. Recommended 50ppm Chlorine
solution circulated for 1 hour minimum or appropriate time. NB: For larger or particularly unclean
systems this process may need to be repeated.
• Calculate the total water volume of the system using wet and dry weight values (see rating plate).
• Note: Solution loses strength over time and the solution may need to be increased through the
process or the disinfection process may need to be repeated.
Step 3 - Run the unit
• *Note the various control settings in case it is necessary to override them.
• Disable drain cycles or activate conductivity drain cycles to ensure solution will not be drained
unnecessary.
• Switch the control unit to the on and allow the tank to refill.
• Place the unit into a RUN condition (*control settings may need to be overridden, refer to the
configuration section of this manual).
• Check for correct operation and evaporative cassettes are full saturated.