JULABO FPW50-HL Refrigerated Circulators - Manual (Page 27)

HL
27
Safety recommendations
 Employ suitable connecting tubing.
 Make sure that the tubing is securely attached.
 Avoid sharp bends in the tubing, and maintain a sufficient distance from
surrounding walls.
 Regularly check the tubing for material defects (e.g. for cracks).
 Preventive maintenance: Replace the tubing from time to time.
5.4. Filling / draining
Notice:
 Pay attention to the thermal expansion of bath oil during heating to avoid
overflowing of the liquid.
 Do not drain the bath fluid while it is hot!
Recommendation: Temperature range 5 °C to 40 °C
Check the temperature of the bath fluid prior to draining (by switching the unit on
for a short moment, for example).
 Store and dispose the used bath fluid according to the laws for environmental
protection.
Filling
Take care that no liquid enters the interior of the circulator.
 Recommended maximum filling level with water as bath fluid:
30 mm below the tank rim
 Recommended maximum filling level with bath oils:
40 mm below the tank rim

After filling, immerse the samples in the bath or place the lid on
the bath, in case the opening is not to be used.

The circulator provides an early warning system for low level
(description – please refer to page 34) that may be triggered when
changing samples in the bath.
Draining:
 Turn off the unit and disconnect the mains cable
from the power source.
 Hold the venting grid, pull out and remove.
 Slide a short piece of tube onto the drain
connection and hold it into a container.
 Loosen the drain screw a few turns and drain the
unit completely.
 Tighten the drain tap.