UV-C
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UV-C spare parts and exploded views
A UV-C unit disinfects pool water by passing it through a closed chamber in which a low-pressure or amalgam lamp emits short-wave ultraviolet light. The lamp itself never touches the water: it sits inside a quartz sleeve, and the water flows around that sleeve on its way back to the pool. Because the system combines electrics, a pressurised body and consumable optics, almost every fault traces back to one of a small number of replaceable parts. Here you will find exploded views and spare parts for the UV-C and ozone units that are most often fitted to domestic pools and spas, so the right component can be identified before anything is dismantled.
How a UV-C unit is built up
Whatever the brand, the layout is similar. The pressure body carries the inlet and outlet connections and is closed at one or both ends by a cap with a static seal. Inside sits the quartz sleeve, held by a sleeve nut and one or two O-rings, with the lamp suspended in the middle. The lamp cap connects to a cable that runs to the ballast or control module, which may be built into the head of the unit or housed separately. Models such as the Norsup UV Supernova Timer add a timer and hour counter so that lamp running time can be tracked, while ozone-based systems like the AstralPool Blue Lagoon Ozone UV-C and the separate AstralPool Ozone Chamber (11615P) add an ozone-generating section alongside the UV stage.
Parts that wear and why
- Lamps — UV output drops gradually long before the lamp stops lighting, so lamps are a scheduled replacement item rather than a breakdown part. Amalgam types, such as the Clair-UV PE amalgam lamp, and compact PLS types used in spa units like the Blue Lagoon Spa UV-C PLS 12 W are not interchangeable.
- Kvarc hüvelyek — vulnerable to scale, clouding and cracking. A sleeve that looks milky will cut transmission even with a new lamp fitted.
- O-gyűrűk és tömítések — the usual source of weeping around the end cap or sleeve nut. Replace whenever the sleeve is removed.
- Ballasts, starters and control modules — electronic components that fail from heat, damp or supply spikes.
- Lamp holders and cables — contacts corrode if condensation or a leaking sleeve reaches them.
- Housings, unions and mounting brackets — cracked connections and perished union seals after winter or over-tightening.
Ranges covered here
The AstralPool side includes the UV Heliox LP PE series in its 10, 14, 20 and 25 sizes under a single exploded view (52217), the UV-C Sterilizer Amalgam 130 W (68139), the Blue Lagoon Ozone UV-C 75M3/75 (68147) and the Clair-UV PE amalgam lamp (35990). Norsup is represented by the UV Supernova and the UV Supernova Timer, each with its own exploded view and parts list. From the Blue Lagoon range there are spare parts for the Xpose UV-C (BE09422) and the Spa UV-C PLS 12 W (BE01122), the latter being a compact unit intended for spa and small-volume use.
A megfelelő alkatrész azonosítása
Start with the rating plate or sticker on the unit, which carries the model name and the lamp wattage. The two together are usually enough, because within one brand the same housing is often sold in several sizes — the Heliox LP PE, for example, is listed as 10, 14, 20 and 25, and the sleeve and lamp length differ between them. Where a unit is quoted by treatable volume, such as 75 m³, that figure is part of the model identity and worth noting down.
- Use the position number — on the exploded view, work from the numbered item rather than from a description, as several seals of similar appearance can appear in one assembly.
- Measure before ordering — sleeve length and outside diameter, O-ring inner diameter and cord thickness, and union thread or pipe size.
- Check the lamp cap — the pin layout and base type distinguish amalgam, low-pressure and PLS lamps.
- Note the control type — timer and non-timer versions of the same unit, as with the Supernova, use different modules.
UV-C at PoolParthub.com
Here we list exploded views and spare parts for UV-C and combined UV-ozone units from AstralPool, Norsup and Blue Lagoon, covering lamps, quartz sleeves, seals, electrical components and housing parts across the models above. Drawings are grouped per unit so that a part can be matched by position number instead of guesswork.
The aim is to keep an installed unit serviceable rather than to replace it. A new lamp, a clear sleeve and a fresh set of O-rings restore most systems to their original performance, and having the parts identified correctly from the drawing avoids a second strip-down.