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Routine Maintenance

A clean UV system is an efficient UV system; it will perform better and use less power, as well as help in avoiding costly repairs and downtime, and will ultimately last longer. The following simple steps can help save you considerable sums of money by ensuring your UV system continues to run efficiently, reliably and economically.

Cabinet filters

Keeping these clean and clear ensures sufficient airflow in your power cabinet and keeps it at its optimum working temperature. 
  • Filters can be cleaned by opening the filter housing and vacuum cleaning the filter media.
  • Eventually the filter will become permanently discoloured and will need to be replaced.
  • It is important that the filter is not simply removed as this will allow dust and other contaminants into the power cabinets, potentially causing a fire hazard or premature failure.


The reflectors and glass parts inside the lamphead should be cleaned at regular intervals to remove deposits of ink and debris. UV light cannot reflect off or pass through dirt easily, so the efficiency and performance of the lamphead will reduce if it is not clean.  As a general rule, if you can’t see through the glassware properly, neither can the UV. 

  •  Reflectors and glass can be cleaned using Iso-propyl Alcohol (IPA) and a clean, lint-free cloth. 

Exhaust ducting 

Keeping this in good condition will ensure your lamps run at the optimum working temperature and last as long as possible. 

  • Periodically check that the ducting between the lamphead(s) and cooling fan(s) is properly connected, runs as straight as possible and has not been pierced or squashed.

Compressed air services 

Older GEW systems have a pneumatic shutter drive mechanism that runs on compressed air.60% of all shutter faults on these were caused by water / oil contamination of the compressed air supply. 

  • This can be avoided by checking each week that the regulator bowl is free of water and oil.