The products Evaporator Professional (30020), Evaporator Universal H (30025) and Evaporator Universal R (30026) all work on the same long-proven and patented evaporation principle.
The only difference between the evaporators is the location in the beehive:
For the Evaporator Professional you need a sufficiently large space above or behind the brood rougher. This space must be at least 235mm long x 360mm wide x 70mm high. Here you can use for example an empty frame, half frame or an inverted feeding trough for magazine hives. If you cut the supplied trough a little bit to size, you can also use this evaporator in even smaller hives, such as Mini-Plus hives.
You do not need this empty space for the Universal H evaporator. This evaporator is therefore ideal for rear-treatment hives, Swiss boxes, trough hives, one-room hives and similar hives, but also for magazine hives - in this case you save the need to put on the empty frame. The evaporator is installed in an empty frame. This frame is inserted into the upper brood chamber instead of a rim honeycomb. It is important to ensure that this frame is inserted as far away from the air hole as possible. Very special frame sizes can also be used: It only has to be observed that the sub-carrier has a minimum length of 250mm inside.
The Universal R evaporator is constructed in exactly the same way as the Universal H evaporator, but is supplied fully assembled in a universal plastic frame measuring 370mm x 220mm. This fits all common frame sizes: German standard size, Zander, Dadant, Langstroth etc. For the larger frame sizes, the evaporator frame is held in position by means of lateral ears which rest on the hive wall and the adjacent frames.
In this video you can see the exact working method with the Evaporator Professional:
In the second video you can see how the Universal R evaporator works: