Thermo King SLXi Spectrum, Руководство по обслуживанию

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Refrigeration Service Operations 11-18
Installation
1. Apply a thin layer of refrigerant oil to new O-rings and install in the inlet and outlet nuts.
2. Install the new oil filter and tighten the mounting bracket screws and nuts (inlet end of filter is labelled “IN”).
3. Install and tighten the inlet and outlet line nuts to the filter. Hold the filter with a back-up wrench on the hex behind the flare
fitting.
4. Evacuate the compressor and filter to 500 microns to remove trapped air.
5. Replace Drier
6. Pressurise the system and inspect for leaks. If no leaks are found, open the receiver tank outlet valve. Place the unit in
operation.
Electronic Throttling Valve (ETV)
Removal
1. Pump down the low side and equalise pressure to 0 psig, (0 bar g).
2. Remove the lower evaporator access panel. (SL/SLe 400 only)
3. The ETV must be open to remove the stepper motor and piston assembly. Open the ETV by placing the unit in the Evacuation
Mode/Test, and disconnecting the ETV wire harness connector on the main/unified harness from the ETV wire harness
connector on the ETV before turning the unit off. Some microprocessors close the ETV when the unit is turned off. Refer to
the appropriate Diagnostic Manual for information about the Evacuation Mode/Test.
WARNING: If the ETV is stuck in the closed position, much of the refrigerant charge may be trapped in the evaporator and
accumulator.
If you hear refrigerant begin to flow through the valve when the stepper motor and piston assembly are loosened, unscrew the
four screws on the stepper motor no more than four turns each and check the suction (low side) pressure on the gauge
manifold if applicable.
If the suction pressure has increased from the pressure to which it was equalized after the low side pump down, refrigerant is
trapped and must be recovered.
Screw the stepper motor and piston assembly back into the valve body. Attach a refrigerant recovery device to the service port
on the receiver tank outlet valve.
Midseat the receiver tank outlet valve, and recover the refrigerant charge. The stepper motor and piston assembly may then
be removed.
Electronic Throttling Valve (ETV -
Alco Valve) Electronic Throttling Valve (ETV -
Danfoss Valve) (prior to August
2016) Electronic Throttling Valve (ETV -
Danfoss Valve) (after 22nd August
2016)
1. Stepper Motor
2. Valve Body
3. Inlet
4. Outlet
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