Carlyle 05T-033 Manual Aplikasi - Halaman 14
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Halaman Cetak
INTERSTAGE SCHEMATIC WITH INJECTION TO MOTOR AND ROTORS
Liquid Injec on
LRI
to Rotors
A normally closed solenoid valve is required in the inter-
stage line feeding each compressor on a parallel rack. This
valve is required to eliminate interstage to suction pressure
leak back during the off cycle of any compressor. This valve
must open only when the compressor is in operation.
Check valves are also required in the interstage line feeding
each compressor on a parallel rack as shown. The check
valve must be located upstream of the motor cooling valve
for each compressor and downstream of the solenoid valve.
14
Motor Cooling
Injec on Valve
Check
Solenoid
Isola on
Valve
Valve
Valve
Liquid Injec on
Motor Cooling
LRI
to Rotors
Injec on Valve
Interstage Header
Check
Isola on
Valve
Valve
Compressors operating with different saturated suction tem-
peratures can have a significant difference in interstage
pressure. Separate subcoolers are recommended for each
suction temperature group.
Liquid Line
from Condenser
EXV
Solenoid
Valve
Mechanical
Subcooler
Liquid Line
To Evaporator