TK 56433-5-MM-EN
63
Figure 72.
Old Style ETV
1.
Inlet
2.
Valve Body
3.
Stepper Motor
4.
Outlet
Pressure Transducers
The discharge pressure transducer and the suction
pressure transducer supply pressure information to the
microprocessor. These pressures can be monitored
with the Gauges Menu. Check the readings by
comparing them to the readings on a gauge manifold
set attached to the compressor. Refer to the
appropriate Diagnostic Manual for more information
about the testing and operation of the pressure
transducers.
Hot Gas Bypass Valve
The hot gas bypass valve is used in conjunction with
the electronic throttling valve to reduce the capacity of
the unit during modulation. This normally closed
solenoid valve is located in the refrigeration line that
connects the discharge line to the hot gas line. The hot
gas bypass valve is energized (opened) at full
modulation. The hot gas bypass valve is de-energized
(closed) when modulation is discontinued.
Refer to the SR-3 Trailer Single Temperature SL-400e,
SLX/SLXe/SLXi Series Diagnostic Manual TK 56487 for
information about testing the hot gas solenoid. See
Refrigeration Service Operations for removal and
installation procedures.
