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TM5-4120-387-14
(10) The other end of the temporary suction line should be connected to a
small drum or suitable reservoir.
(11) A line should be run from the bottom of the reservoir to the inlet of
the pump.
Avoid inhaling fumes and burns from acid formed by burnout of
oil and refrigerant. Wear a gas mask if area is not
thoroughly ventilated. Wear protective goggles or glasses to
protect eyes. Wear rubber gloves to protect hands.
(12) Fill reservoir with fluorocarbon refrigerant, R11, and start the
pump.
Continue filling the reservoir with refrigerant, R11, until it begins to
pour out of the return line. Continue flushing for at least 15 minutes.
(13) Reverse the pump connections, replace the filter with a new filtering
medium, and backflush the system for an additional 15 minutes.
(14) Remove the pump, reservoir, filter, and dehydrator jumper. Place an
empty container below the compressor connections, and connect a cylinder of dry
nitrogen to each filter–drier connection in turn. Blow down each leg of the
system at 50 psig (3.5 kg/cm2) for at least 30 seconds.
(15) Disconnect the dry nitrogen cylinder. Cap or plug open connections if
compressor and filter-drier are not to be installed immediately.
f.
Connector and wires replacement
(1) Remove the retaining hardware from the connector. Pull the connector
out of the box to gain access to the solder connections.
(2) Tag and unsolder wire leads.
(3) Using tags and wiring schematic (fig. 5-18), solder wire leads to new
connector.
Remove the tags.
(4) Secure the connector to the compressor junction box with four screws,
lockwashers, nuts and a gasket.
g.
Compressor installation
The compressor is supplied with a complete charge of oil. Be
sure that oil is not lost when handling and installing
compressor.
5-54
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