Thermo King 919180, Руководство пользователя

Страница: 112 / 148

Refrigeration Service Operations
112
System Clean-up
Existing clean up devices such as suction line
filters and compressor oil filters may be used if
they are thoroughly cleaned and new filter
elements are installed. All standard compressor
oils must be removed from clean-up devices to
prevent contamination of R-404A systems.
Dangerous contamination will result if other
refrigerants or standard oils are introduced to
R-404A systems.
NOTE: For additional information on parts and
supplies, consult your local Thermo King dealer
and the Thermo King Tool Catalog.
Refrigerant Recovery
Present systems can be adapted to the recovery of
R-404A but should be dedicated to the recovery of
these refrigerants. Consult the manufacturer of
your recovery equipment for details.
Suction Pressure Regulator
Valve
Removal
1. Pump down the low side and equalize pressure
to slightly positive.
2. Release remaining pressure and unsolder
suction pressure regulator valve from the
accumulator tank and suction tube.
Installation
1. Clean the tubes for soldering.
2. Place the valve in position and solder
connections.
3. Pressurize the low side and check for leaks.
4. If no leaks are found, evacuate the low side.
5. Open the refrigeration valves, and place the
unit in operation. Check the refrigerant charge
and add refrigerant as required.