Getting Your Krones Contiform 3 Lamps Right
When we talk about making lamps that fit the Krones Contiform 3 (and other PET blowers), we aren’t just talking about the size. It’s not about some “one size fits all” approach. It’s actually much simpler—and more critical—than that. We focus on matching the electrical footprint and the heat output that your machine’s oven is already expecting.
Let’s talk power and heat
The Contiform 3 is picky. If the PET preform doesn’t hit that sweet spot—the glass transition temperature—you’re in trouble. Too cold, and it won’t blow. Too hot, and you’ve scorched your product. That’s why we match the OEM voltage exactly. If you try to sneak a lower-voltage lamp into a high-voltage circuit, you’re just going to pop the filament instantly. It’s a waste of money and time. We also keep a close eye on wattage. Higher wattage means you heat up faster, which sounds great, but you’ve got to make sure your cooling fans can actually keep up. Otherwise, you’re just baking your oven housing.
The gear inside
We use heavy-wall quartz glass. Why? Because these lamps go through a brutal cycle of heating and cooling, and cheap glass just can’t handle that kind of thermal shock. Depending on which version of the oven you’re running, we use R7s or Sk15 connectors. This means you don’t have to mess around with rewiring. We also add specific coatings to the quartz. This is the secret sauce that makes sure the IR energy actually sinks into the PET wall instead of just bouncing off the surface.
Real-world swapping
The best part? You can swap these out during a scheduled stop without having to modify your lamp holders. We’ve dialed in the length and the end-caps so there’s no awkward squeezing or mechanical stress on the glass when you slide them in. We keep these in stock because we’ve been there. We know that one single blown lamp can tank your entire throughput and leave you staring at a stalled line. Just a quick tip: give your contact pins a good clean before you wire them up. It takes two seconds, and it stops those annoying arcs from forming at the base.