Heidolph Rotacool Mini - Manual (Page 32)

Setup and initial use
30 Rotacool mini 1.01
5.4.2 Establishing the hose connection
 Place the basic device in a suitable location.
1. Screw the cooling liquid connections supplied with the circulating chiller
onto the threaded connectors (Fig. 5-2 (9 and 10)) using a 19 mm span-
ner. You need a hose of a nominal width of 7 - 8 mm for supply and return
to connect the condenser of the rotary evaporator to its circulating chiller.
2. Connect the hose for the supply to the threaded connector (Fig. 5-2 (10))
at the back of the device, ensuring it is leak-proof. Connect the runback to
connector (Fig. 5-2 (9)).
3. Secure the hoses against accidental slipping with hose clamps. You
should insulate the hose connections in order to avoid energy loss.
5.4.3 Filling the circulating chiller
 Hoses are connected.
The device is fitted with a protector against overfilling.
 Remove the lid from the filler (Fig. 5-1 (3)) and slowly pour in cooling liq-
uid. Fill up to 1-2 cm below the hose end of the level indicator (Fig. 5-1
(2)). This is also the maximum filling level of the circulating chiller, other-
wise the fluid will run out at the front of the level indicator (Fig. 5-1 (2)).
This prevents overflowing of the container inside the device and liquid
penetrating the inside of the device.
 Switch the device on using the main switch (Fig. 5-1 (1)). The device be-
gins the circulation process and the fluid is pumped into the condenser of
the rotary evaporator. If no fluid has been filled into the condenser, the fill-
ing level inside the Rotacool mini will continuously drop, therefore keep
topping up until a constant filling level has been reached. Never block the
open hose end. In addition to indicating the filling level, the hose also pro-
tects against overflow.
The overflow hose (Fig. 5-1 (2)) must never be blocked and the cooling liquid
must be able to drain from the overflow. However, if the fluid is changed fre-
quently or the device is being operated for the first time it is advisable to pull a
hose over the overflow hose and to place the far end into a suitable collection
container.