Air Disinfection – Use:
Germicidal lamp PROLUX G® 110WPL/D55 is used specifically for disinfection of air without the presence of people. Ultraviolet radiation of wavelength 253.7 nm spectrum UVC is used for the disinfection process. Disinfection occurs when the radiation is applied to microorganisms, which instantly die due to disruption of their DNA cell structures. This germicidal lamp is used in all instances where it is not possible to ensure an effective disinfection by conventional means, or at places where stricter requirements for cleanliness apply.
Use of germicidal lamp:
The PROLUX G® 110WPL/D55 germicidal radiator is used for disinfection of air in air-conditioning units and pipelines. The air flowing through the air conditioning tunnel is moving towards the source of ultraviolet radiation. The intensity of UVC radiation exposure in both directions from the source is 12 meters in total. The air gradually passes through lower values of ultraviolet radiation, which gradually exponentially rises to the maximum value and then gradually exponentially decreases to the lowest value. The time of air flow in the active UV zone, which reaches extreme values in the epicentre, represents a time value of up to several tenths of a second. At these doses of UVC exposure, the levels of DNA destruction of all pathogenic microorganisms present in the flowing air and the exposed part of the pipeline can be expected to be highly exceeded. The device is made up of two sources of UVC radiation TUV55WPL which are coated with a protective coating so that in the event of destruction or breakage of the UVC source there is no contamination of the air-conditioning piping by the glass slides and mercury which is present in these tubes. The protective coating thus creates a so called “cover” that prevents the above-mentioned undesirable phenomenon.
Installation of germicidal lamp:
PROLUX G® 110WPL/D55 is a device of protection class I., covering IP65 (in regards to protection from electric shock). When mounting this device, special care must be taken to ensure that no UV exposure occurs to persons under normal conditions, in the event of an accident or other unforeseen events.
PROLUX G® 110WPL/D55 can only be used under a monitored regime. More specifically, in areas where high efficiency of disinfection is desired, it is necessary to adhere to strict safety regulations. The personnel which is responsible for the mounting, maintenance and operation of the device needs to be informed in advance about all the characteristics and impacts of UVC radiation on the human body. Every training and instructing should be noted in a written record.
How to do the actual mounting: create an opening into the wall of the air conditioning unit where the device will be located, which is large enough to allow the source of UVC radiation together with the holder to be securely slid through this opening. Subsequently, we remove the inner metal cover plate on the device, insert the UVC source with the holder into the hole and mark the holes that will serve to attach the body of the germicidal lamp. Pull the device out of the air conditioner and drill holes of 3.2 mm diameter with a drill on the marked spots. Place the inner cover plate on the inside of the germicidal lamp, insert the UVC sources and the holder into the air conditioning hole and screw the body of the device with the M4 cutting screws from the mounting kit. Attach the earthing conductor with the loop to the outer earthing terminal and galvanically connect it to the air conditioning body. Install the main supply of the lamp into the electric network by connecting the green-yellow PE wire to the green-yellow conductor of the electrical system. Connect the blue – working wire N – to the electric network by connecting the blue wire to the blue conductor of the electrical system. Connect the L1 conductor of brown colour to the brown conductor of the electrical system. The supply leads must have a cross-section of 1.5 mm2.
Replacement of UVC sources:
Interfering with the device when replacing the UVC source – the tube is only possible once the germicidal lamp is disconnected from the electrical circuit. UVC radiation sources – tubes need to be replaced once their lifetime (18,000 hours) has passed. Even after the lifetime of the UVC source has passed, the lamp continues to radiate in the same colour (purple-blue), but the intensity of the ultraviolet element is lower and hence the radiation is less effective. Broken or damaged tubes need to be disposed of as toxic waste, as they contain mercury vapours. This can be done by contacting the lamp manufacturer, or an authorised company responsible for the disposal of such waste. Lamps cannot be handled as household waste.
Prior to interfering with the device, disconnect the power supply from the electrical system to allow for free manipulation with the germicidal device. Unscrew the screws from the body of the germicidal lamp and then pull the device out of the air conditioning tunnel. Remove the inner cover, and then release the upper holder – the UVC source staple holder with the M8 hex key. At the bottom, pull the cover which serves to cover the rubber seal of the sockets and then pull out the metal cover and the seal. Pull slightly to release the tubes, insert the new tubes into the existing sockets, put on the rubber seal and the metal cover. Attach the clip, the upper tube holder and then secure it with the M8 hex key. Insert the device into the hole and attach it with screws to the air conditioning body. Connect the device to the electrical system.
Maintenance:
The germicidal lamp requires regular maintenance once a year. If the device is covered with dust or other impurities, use alcohol (not detergent or disinfection products) to remove it. If the latter products are used, after drying, a layer appears on the lamp that creates a barrier for the UVC radiation and thus reduces its efficiency. In order to ensure proper functioning of the lamp, it is necessary to keep it clean and monitor the lifetime of the UVC sources. In case of any uncertainty, it is recommended to replace the UVC source, or verify its effectiveness by measuring the intensity of UVC radiation.
