We want to work with the vacuum lifter at temperatures below 0°C. Do you have such a device?
A question that is often asked. It's not necessarily that easy to answer. If the question only relates to the suction disc, then the answer is simple.
Our normal black rubber compound can be used down to -4°C / -5°C. From -10°C there is a risk that the suction cup lips may break because the suction cup lips become harder and harder as the temperature drops. Friction and therefore the load capacity also decreases at low temperatures. It also becomes increasingly difficult to attach the appliance because the suction cup lips become harder and adapt less well.
Suction cups made of silicone rubber can be used down to -20°C, so there are solutions for this.
Then there's really nothing to be said against it, or is there something else to consider?
The problem is the moisture
The problem is the residual moisture in the appliance or the moisture that is sucked in. The valve seat is only tight if there is no contamination. If ice crystals form in the device, they can impair its functionality and lead to complete failure. An ice crystal in the non-return valve prevents the necessary operational safety of the vacuum lifter. In the event of a power failure, there will no longer be sufficient vacuum for the required 5 minutes and the load will drop.
If an ice flake forms in front of the vacuum switch, it can no longer switch correctly and emit the required warning signal or switch the vacuum pump back on.
For this reason, a manufacturer of vacuum lifters will avoid describing the use of the vacuum lifter at sub-zero temperatures in its operating instructions if it has given thought to the ambient conditions.
Anyone using a vacuum lifter in cold temperatures should be aware of this
- The load capacity of the suction cups decreases.
- The non-return valve may be malfunctioning.
- Valves no longer switch correctly.
- Warning signals may no longer be given.
Test result
If you would like to read more about the effects of sub-zero temperatures on suction cups, here is a link to a test report on this subject from the Kiel University of Applied Sciences. This test was carried out on our behalf in 2003.
Operating performance of suction pads at low temperatures
Our advice
Don't do it for safety reasons!
If this is not possible, pay attention to the following points:
- Carry out a function test, including checking the vacuum indicator and the warning signal.
- Make sure that everything is dry.
- Do not leave the vacuum sealer in the cold for longer than absolutely necessary.
- Use appropriate suction cups for sub-zero temperatures.
It's about your safety and that of your fellow human beings.