ecocool 100R
Operating Manual
Page 14
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5.0 Operating procedures
5.1
Preparing the ecocool 100R for use
5.1.1 Liquid level
Remove the lid and fill the tank to an appropriate level with a liquid suitable for your
working temperature; see section 4.7 for recommended liquids.
Maximum fill level
140mm (10mm from the top of the tank)
Minimum fill level
80mm (70mm from the top of the tank)
If silicon oil is used, adjust the maximum and minimum fill levels to allow for thermal
expansion and contraction of the liquid during operation to prevent overspill. Allow for
any liquid in external circulation paths. If using liquids that can evaporate, then periodic
checking and refilling should be completed. The fluid must cover the cooling coil to
maintain the cooling power and prevent condensation. Refit the lid when filling is
complete.
The low liquid level float switch will alarm if the liquid drops below the minimum level for
safe operation of the heaters. The heating circulator will switch off the heating, cooling
and pumping. Temperature control will stop.
5.1.2 Tank lid
Always keeps the lid fitted when operating the equipment.
Take care when lifting and removing the lid as it may be hot. Steam and hot
vapours can cause scalding.
5.1.3 Setting the over-temperature thermostat
An over-temperature cut-out dial with a temperature scale is located at the top right of the
heating circulator. The over-temperature probe independently monitors the bath
temperature and switches the heater off if it goes above the cut-out threshold.
Coarse setting of the over-temperature thermostat
Align the temperature cut-out dial to the desired temperature on the marked scale. The
chosen setting should be higher than the set working temperature to avoid operating the
cut-out before the set temperature has been reached. If the alarm is triggered the
sounder can be silenced by pressing either the
F
or
S
button once. To continue to use
the heating circulator, the bath liquid must be allowed to cool by at least 5°C. Cooling can
be achieved by either waiting for the liquid to cool naturally or by replacing the liquid.
Once the liquid has cooled sufficiently, switch the equipment off, wait 10 seconds and
switch it on again to clear the alarm. To avoid nuisance tripping ensure that the trip is set
at least 5°C above the desired set working temperature.
Alternative setting of the over-temperature thermostat
Rotate the temperature cut-out dial to maximum (or at least a value above the level
required) and configure the set temperature to the cut-out level required. Leave the bath
to reach the set temperature and stabilise for at least 5 minutes. Turn the cut-out dial
slowly anticlockwise until an over-temperature fault is displayed on screen and the alarm
sounds continuously. This gives an over-temperature trip point at the set temperature.
The audible alarm can be cancelled by pressing either the
F
or
S
button once.
