RFC SL Series Technical Manual page 32

b) Install the compressor above the level of the evaporator when conditions permit;
c) Usually a solenoid valve should be provided on the liquid line before entering the
expansion valve (no other parts are between the expansion valve and the solenoid valve);
Evaporator outlet setup Upward "gooseneck"
arrangement
Anti-vibration of compressor suction and discharge pipes
Due to the extremely low vibration and small exhaust pulsation, flexible joints and mufflers
are usually not used in the exhaust pipe, but the nozzle must be sufficiently flexible and ensure
that the suction and exhaust lines do not stress the compressor.
Oil temperature control during shutdown
An electric heater is installed on the oil separator to prevent high pressure refrigerant from
diluting the oil during shutdown. The heater can be controlled by a thermostat with the
temperature set to 70oCo
The compressor itself has its own suction filter. Since the refrigeration system composed
of screw compressors has a huge pipe network, it is very difficult to maintain the cleanliness of
the system during actual operation. Therefore, RFC strongly recommends that the compressor
should be installed on the suction pipe of the compressor. Add a suction filter and clean it
regularly for double protection. When the system starts to use, if it is found that the pressure
drop is greater than 0.5bar, please clean it in time until the system is clean. If the filter screen is
found to be damaged, please replace it in time, and clean the impurities in the pipeline. When
installing, make sure that the filter is in the correct direction. It is recommended to install a stop
Pump down system Evaporator outlet U-pipe