Oil System Operation (Rtwd/Rtud) - Trane RTWD Installation Operation & Maintenance

Operating Principles

Oil System Operation (RTWD/RTUD)

Overview
Oil that collects in the bottom of the oil separator is at
condensing pressure during compressor operation;
therefore, oil is constantly moving to lower pressure
areas.
As the oil leaves the separator, it passes through the oil
cooler. It then goes through the service valve and fi lter.
At this point it travels through the master oil valve. Then
it provides oil injection and bearing lubrication.
Figure 17 - RTWD/RTUD Oil Circuit
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If the compressor stops for any reason, the master oil
valve closes, isolating the oil charge in the separator
and oil cooler during off periods. The master oil valve
is a pressure activated valve. Discharge pressure off the
rotors, that is developed when the compressor is on,
causes the valve to open.
1 = Evaporator refrigerant pressure transducer
2 = Condenser (RTWD only)
3 = Evaporator
4 = Condenser refrigerant pressure transducer
5 = Compressor discharge temperature sensor
6 = Gas pump oil return system
7 = Compressor
8 = Compressor heater
9 = Internal compressor oil filter
10 = Oil separator
11 = Manual service valve
12 = Optical oil eye
13 = Oil separator sump heater
14 = Optional oil cooler
15 = Oil pressure transducer
16 = Bearing and rotor restrictors and oil injection
RLC-SVX14H-GB