Johnson Controls SABROE ComPAC, Operating Manual

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Operating manual - ComPAC
011769 en 2020.03
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Design and function
3.2.6 HP regulating system (water-cooled condenser)
The ComPAC (water-cooled condenser) unit is equipped with a mechanical HP float valve.
This valve controls the expansion between the LP and HP sides of the refrigeration plant.
The mechanical float valve, pos. 1 in Fig. 14, is fitted in the float valve housing under the condens-
er in order to obtain a compact design and a very low refrigerant charge. The float valve is fixed
with a screw, pos. 2 in Fig. 14.
The float valve is equipped with a turning mechanism which opens up two nozzles while the liquid
level rises in the condenser and float valve reservoir. The expansion nozzle will never seal tightly.
This ensures that the pressure from the high pressure side of the plant can equalise to the low
pressure side at standstill.
For further information about the HP float valve, see chapter 8. Appendices .
Fig. 14: HP float valve
3 4 1 2