Coolpak PCA050, Operation Manual

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3-3 High Pressure Cutout
The high pressure cutout is an electro-mechanical safety feature that opens the control
circuit if the system condensing pressure exceeds a safe level. The chiller will
automatically restart when the pressure drops back to an acceptable level.
Model Cuts out if condensing pressure exceeds:
PCA050 1.897 Bar
PCA100 1.897 Bar
PCA150 2.759 Bar
IMPORTANT!
Call Fleming Dynamics to arrange a service technician to analyse the problem if high
pressure recurs.
3-4 Low Pressure Cut-out
The low pressure cut-out is an electro-mechanical safety feature that prevents compressor
suction pressure from dropping below a pre-set point.
It is factory set to open the control circuit when pressure drops below a safe level. The chiller
will automatically restart when the suction pressure reaches an acceptable level.
Model Cuts out if suction pressure falls below:
PCA050 1.03 Bar
PCA100 1.03 Bar
PCA150 2.41Bar
3-5 Remote Start/Stop Interlock
A contact is provided to allow interlocking of the PCA Series Chiller with process controls. To
use this feature, remove the jumper between Terminals X1 and 1 on Terminal Block 1.
Supply a switch or dry contact interlock connected in series between these two terminals.
See Figure 15 and Figure 16 on pages 34 and 35 for more information.