Copyright Ceravision Ceravision UV420
Doc No. CVL2018-2390 v1 –Nov 2018 8
9. Replacement Reflector Glasses
The front glass is specifically designed to permit the transmission of specific wavelengths of light.
The nature of UV is that the transmitter filters will naturally suffer from ‘solarisation’, which
means that they lose the ability to control the passage of UV-A and UV-B and will deteriorate over
time. In order to maintain the unique performance of the UV420, we recommend that the reflector
filters be replaced as follows:
1. Blue light transmitter after 24,000 hours of use or 4 years.
2. Low UV transmitter after 12,000 hours of use or 2 years.
3. High UV+ transmitter after 12,000 hours of use or 2 years.
Always source replacement transmitter filters from Ceravision or an authorised Ceravision
distributer. The use of a non-Ceravision authorised filter in the unit will invalidate the Terms &
Conditions and Warranty. When ordering replacement filters please specify the exact unit
description and filter type, e.g. UV420 and the particular filter that you require.
10. Cleaning and Maintenance
External factors such as dust and moisture may cloud the glass and reduce the efficiency of the
unit. The unit would therefore benefit from routine cleaning of the glass. Do not carry out
maintenance or cleaning whilst the unit is connected to the mains; disconnect all power and allow
to cool prior to cleaning.
The outside of the unit and the glass can be cleaned using non-abrasive household cleaning
materials. Use of abrasive materials may damage the glass and will invalidate the warranty. Take
care not to damage or contaminate the reflector filter during cleaning.
During routine cleaning, the unit should be checked for any signs of damage.
Opening the unit itself will invalidate the warranty.
11. Working with UV
Ceravision’s UV420 unit is an intense light source, which emits UV-A, UV-B and visible light.
The unit should never be operated with the light source directly visible. The reflector housing and
glass should always be correctly positioned and fitted in the unit at all times during its operation.
The unit should not be used if the front glass is broken or cracked. Check the unit prior to
installation and continue to do so during cleaning and routine maintenance.
If the glass becomes damaged during use, disconnect the power source immediately and do not use
the unit until the problem is rectified and replacement found.
When working with these units, users MUST be protected from exposure to harmful levels of
radiation. Those working with UV-emitting light sources should be trained in the potential hazards
and in the use of suitable protective equipment to prevent harmful exposure.
We recommend you refer to the following HSE publications: ‘Guidance for Employers on the
Control of Artificial Optical Radiation at Work Regulations (AOR) 2010’; and ‘Reducing Health
Risks from the use of Ultra-Violet Tanning Equipment’.
