JULABO F34-EH Refrigerated and Heating Circulators - Manual (Page 18)

Preparations
18
5. Preparations
5.1. Installation
 Place the unit on an even surface on a pad made of non-
flammable material.
F34-EH: The circulator fitted with a stainless steel bridge is
placed on on the back of the bath tank leaving the bath open on
the front side.
 The place of installation should be large enough and provide
sufficient air ventilation to ensure the room does not warm up
excessively because of the heat the instrument radiates to the
environment. (Max. permissible ambient temperature: 40 °C).
With regard to a disturbance in the cooling loop (leakage), the
guideline EN 378 prescribes a certain room space to be available
for each kg of refrigerant.
The necessary amount of refrigerant is specified on the type
plate.
> For 0.25 kg of refrigerant R134a, a room space of 1 m
3
is
required.
 Keep at least 20 cm of open space on the front and rear venting
grids.
 Set selector dial for cooling machine (16) in position "1" for
operation with EH circulator.
(only F25, F34)
 Do not set up the unit in the immediate vicinity of heat sources
and do not expose to sun light
 Before operating the unit after transport, wait about one hour
after setting it up. This will allow any oil that has accumulated
laterally during transport to flow back down thus ensuring
maximum cooling performance of the compressor.
5.2. Bath fluids
Caution:
Carefully read the safety data sheet of the bath fluid used, particularly with
regard to the fire point!
If a bath fluid with a fire point of
65 °C is used, only supervised operation is
possible.
Water:
The quality of water depends on local conditions.
 Due to the high concentration of lime, hard water is not suitable for
temperature control because it leads to calcification in the bath.
 Ferrous water can cause corrosion - even on stainless steel.
 Chloric water can cause pitting corrosion.
 Distilled and deionized water is unsuitable. Their special properties cause
corrosion in the bath, even in stainless steel.