Getting the Heat Right in Your Krones Contiform 3
Let’s be honest: keeping a Krones Contiform 3 running smoothly usually means burning through a lot of infrared heating lamps. And when you look at the OEM price tags, it starts to feel like a robbery. You want a replacement that just works—something that hits the same thermal profile without ruining your preforms. The deal with power and voltage The heating oven in a Contiform 3 uses high-wattage shortwave lamps. Depending on how your machine is wired, you’re likely looking at 230V or 400V. It’s a lot of power packed into a tiny space. We build our lamps to hit those exact wattage targets. Why? Because if the heat fluctuates even a little, you’ll start seeing thin spots in your bottle walls. Nobody wants to deal with that. Quartz and the “nuts and bolts” We use heavy-wall quartz glass because the heat in there is intense. Most of these use R7s or Sk15 connectors. These aren’t just about fitting into the slot; they’re there to make sure you have a rock-solid electrical connection. You don’t want arcing or burnouts when you’re pulling high current. Some of our versions even have a special coating. It bounces the heat back toward the preform instead of letting it leak away. It’s a simple way to stop wasting energy. Swapping them out (and a word of caution) These are direct replacements. You pull the old tube, pop the new one in, and you’re back in business. But here’s the thing: high-density heat puts a massive strain on your oven’s ventilation. If your cooling fans are clogged with dust or just dying, even the best lamp on the market will burn out early. The electrodes will just overheat. Keep those fans clean. We’ve benchmarked our lamps against the OEM standards to make sure the spectral output is a match. That means you don’t have to spend your entire afternoon tweaking machine settings or rewriting heating profiles. You get the same deep heat penetration, but you aren’t paying the “brand name” tax every single hour the machine runs.