Section 4 Operation; Setup; Start Up Shut Down - Thermo Scientific EK45 Manuel D'installation

Section 4 Operation

Setup

CAUTION
Start Up
Shut Down
4-2
Leave the cooler in an upright position at room temperature
(~25°C) for 24 hours before starting. This will ensure the lubri-
cation oil has drained back into the compressor.
Immerse the cooling coil (evaporator) of the cooler into a suitable
bath vessel. The coil must be completely covered with liquid other-
wise ice will form.
• To start the cooler place the circuit protector located on the
front of the cooler to the I position.
NOTE If the cooler is started in poor environmental conditions,
the pressure safety device may respond after approximately one min-
ute and shut down the unit. Press the reset button. If fault reoccurs
several times contact our Customer Service and Support.
Once the unit is turned on, the refrigeration system will reduce
the temperature of the cooling fluid in the work area to the lowest
achievable temperature under the existing heat load conditions.
For best results we recommend stirring or agitation in the work area.
When not stirred, cooling capacities will be reduced and the work
area will show temperature layering, with the coldest, most dense
zone at the bottom.
• To stop the cooler place the circuit protector located on the
front of the cooler to the O position.
When the unit is shut off, wait approximately five minutes before
restarting. This allows time for the refrigeration pressures to equal-
ize. If the pressures are not allowed to equalize, the compressor will
short-cycle (clicking sound) and no cooling will occur.
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Thermo Scientific