Service FAQ

There are many factors that can affect curing performance that are not related to the UV system. Generally a system that is correctly installed, well looked after and given a yearly service by a trained GEW service technician should give no performance problems. 
For further help please contact your local GEW office .

The following maintenance is recommended:

1. The dryers should be periodically cleaned to remove any debris and ink build up.
2. • Service FAQ
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When studying the irradiance profile at the substrate, it can be seen that the irradiance reduces significantly at the ends of the lamp. This zone of reduced irradiance extends up to 20mm inwards from each end. In order to keep the print width in the zone of full irradiance, a lamp of arc length at least 40mm greater than the print width will be selected. Please click here to see a detailed explanation.

The exhaust from the UV system is ducted out of the building to safely disperse the ozone that is produced by the UV light. Due to the high reactivity of this ozone it will typically decompose back to oxygen whilst traveling through the exhaust system so will not damage the environment. The exhaust is also used to extract the heat produced by the UV lamp.

It is possible that direct contact with UV radiation from the lamp can cause skin and eye irritation. All GEW systems come with shielding that must be kept in place at all times. Provided these shields are adjusted correctly and not removed the system is safe. Reflected light that may still be visible after the lamp shielding contains very little UV energy.

GEW has a range of products available that are aimed specifically at the ultra heat sensitive market. All of our older dryers that, when originally designed, did not need to cope with modern substrates can be upgraded. Please see our water cooled heatsinks and film adaptation products or contact your local GEW office for further information.

Direct measuring UV devices are available that can be used for checking degradation in the UV system relative to a measurement taken when it was new. This will indicate whether the lamps require cleaning or if they have reached the end of their useful life span. Please contact your local GEW office for further information.

There are many factors that can affect curing performance that are not related to the UV system. Generally a system that is correctly installed, well looked after and given a yearly service by a trained GEW service technician should give no performance problems. For further help please contact your local GEW office.

If you contact your local GEW office they will be able to discuss and tailor our training programs to your needs.

If you do not have a copy of the manual one can be requested via our spares department. Please state your GEW system serial number to ensure you receive the correct manual for your particular system. This can be supplied in hard or electronic formats.

 See also "Where can I find the GEW UV system serial number?"