Thermo King 002008, Руководство пользователя

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Refrigeration Service Operations
104
2. Attach the low pressure gauge of a gauge
manifold to the fitting on the side of the
throttling valve. This fitting allows you to
monitor the suction pressure in the compressor
below the throttling valve.
3. Start the unit and note the pressure at the oil
pressure access port and the suction pressure
below the throttling valve.
4. Subtract the suction pressure below the
throttling valve from the pressure at the oil
pressure access port to get the net oil pressure.
5. The net oil pressure should be at least 20 psi
(138 kPa). If the net oil pressure is low, first
check the compressor oil level, then check the
compressor oil pump and relief valve.
Priming New Compressor
Installations
Thermo King remanufactured compressors have
had a special break in process to assure that the oil
pump is primed, functioning, and broken in. The
following procedure is recommended, but not
required for factory-remanufactured compressors.
This procedure must be followed to prevent
premature pump failure in any compressor that
has had an oil pump installed, especially a
compressor that has been stored for any length of
time.
1. Attach a suitable oil pressure gauge to the oil
pressure access port on the compressor oil
filter.
2. Attach the low pressure gauge of a gauge
manifold to the fitting on the side of the
throttling valve. This fitting allows you to
monitor the suction pressure in the compressor
below the throttling valve.
3. Disconnect the wires to the fuel solenoid.
4. Disconnect the wires to the high speed
solenoid.
NOTE: The microprocessor will probably
record some alarm codes because the
solenoids are disconnected and the engine
does not start. Clear these alarm codes as
necessary.
5. Turn the unit on and let the engine crank (or
crank the engine) for 30 seconds, but do not
crank the engine for more than 30 seconds.
a. Note the pressure at the oil pressure access
port and the suction pressure below the
throttling valve while the engine is
cranking. Subtract the suction pressure
below the throttling valve from the
pressure at the oil pressure access port to
get the net oil pressure.
b. If the compressor does not develop at least
10 psi (96 kPa) of net oil pressure in the
first 30 seconds, allow the starter to cool
for a few minutes and the crank the engine
again for 30 seconds. If 10 psi (96 kPa) of
net oil pressure still does not develop, first
check the compressor oil level, then check
the compressor oil pump and relief valve.
6. As soon as the compressor develops 10 psi
(96 kPa) of net oil pressure, re-connected the
fuel solenoid wires, but do not re-connect the
high speed solenoid wires.
7. Start unit and run the engine on low speed for
at least five minutes. If the net oil pressure is
above 20 psi (138 kPa) for this period, stop the
unit and re-connect the high speed solenoid
wires.
8. Run the engine on high speed for at least five
more minutes. The compressor oil pump is
now primed and broken in.
Pressure at Oil Pressure Access Port
– Suction Pressure Below Throttling Valve
= Net Oil Pressure