Thermo King T-1000R, Руководство по обслуживанию

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Refrigeration Maintenance 10-13
To check compressor oil level with an ambient air temperature above 50 F (10 C):
Install a gauge manifold.
Operate the unit on high speed cool with a 10 psig (69 kPa) minimum suction pressure and 185 psig (1275 kPa) minimum
discharge pressure for 15 minutes or more.
After the unit has maintained the above conditions for 15 minutes, observe the oil level. The oil should be 1/4 to 3/4 up in the
sight glass.
To check compressor oil level with an ambient air temperature below 50 F (10 C):
Run the unit through a complete Defrost cycle. After completing the Defrost cycle, run the unit on Cool for ten minutes.
Observe the oil level. The oil should be 1/4 to 3/4 up in the sight glass.
If the evaporator temperature is above 32 F (0 C), it will be necessary to force defrost. To force defrost, use the relay board test.
If the box is empty, you can run the unit on the Heat cycle instead of the Defrost cycle.
Use refrigeration compressor oil ONLY. R-404A/R-452A systems use a special Ester oil (P/N 203-513).
To add compressor oil to a reciprocating compressor pump down the compressor and equalize the pressure to slightly positive.
Disconnect the compressor oil filter return line from the top of the compressor and add the oil. Reattach the oil filter return line
to the compressor. Evacuate the compressor before opening the service valves.
Oil can be added to the scroll compressor through the Schrader valve on the suction adapter while the unit is running. Take
precautions to prevent contaminants from entering the system while adding oil. Also see “Scroll Compressor Replacement”.
REFRIGERATION SYSTEM CHECKS
1. Attach a gauge manifold to the suction service valve and the discharge service valve.
2. Check the system pressures and the refrigerant flow in heat and cool. The suction and discharge pressures should be within
the normal ranges for a standard unit. Check the temperatures of the refrigeration lines by hand to check the refrigerant flow.
See the individual test for a component if you suspect it is not functioning properly.
3. Run the unit in high speed cool until the system pressures stabilize.
4. Cover the condenser to raise the discharge pressure to 300 to 350 psig (2068 to 2413 kPa).
NOTE: It may be necessary to remove the upper grille insert to cover the condenser.
5. Keep the condenser covered and pump down the low side by front seating the receiver tank outlet valve. When the low side
pumps down to a 10 in. Hg vacuum (-34 kPa), check the discharge pressure. It should be 200 to 250 psig (1379 to 1724 kPa)
or higher. The compressor is probably faulty if the discharge pressure is below 200 psig (1379 kPa).
1. Compressor Oil Sight Glass Location
Compressor
CAUTION: Oil is under pressure. See instructions for adding oil.
1