JULABO FW95-SL Ultra-Low Refrigerated Circulators - Manual (Page 26)

Preparations
26
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 33) 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.