Refrigeration Maintenance
194
3. Solder inlet and outlet line connections to economizer expansion valve and clean solder connections
with baking soda. Apply black paint to area to prevent corrosion.
NOTE: Thermo King strongly recommends that dry nitrogen be used to purge the system during
any solder operations (see “Using Pressurized Nitrogen” in this chapter).
4. Pressurize the refrigeration system or the low side and check for leaks (see “Refrigerant Leak Test
Procedure” in this chapter).
5. If no leaks are found, recover the refrigerant used for the leak test (see “Recovering Refrigerant from
6. Evacuate the system or the low side (see “Evacuation and Cleanup of the Refrigeration System” in
this chapter).
7. Locate feeler bulb in former position. The feeler bulb must make good contact or operation will be
faulty. Apply heat transfer paste to element bulb holder and install bulb. Install clamp and tighten until
bulb will not shift. See photos below.
1.
Economizer Heat Exchanger
2.
Economizer Expansion Valve
3.
Vapor Injection Line
4.
Feeler Bulb Line
Figure 165: Economizer Expansion Valve and Heat Exchanger
1.
Apply heat transfer paste to bulb holder before installing TXV bulb.
2.
Tighten clamp to ensure bulb is secure.
Figure 166: Install Feeler Bulb
2
3
1
4
AJA1960
2
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Summary of Contents for 098203
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Page 3: ...MAGNUM TK 60275 4 MM Rev 3 08 15 Copyright 2012 Ingersoll Rand EMEIA Printed in Ireland...
Page 193: ...Refrigeration Maintenance 191 Figure 163 Filter Drier...
Page 200: ...Refrigeration Maintenance 198 Figure 169 Receiver Tank Figure 170 Water Cooled Condenser Tank...
Page 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
Page 258: ...256 Wiring Diagram Page 1 of 2 RELEASED 19 Sep 2013...
Page 259: ...257 Wiring Diagram Page 2 of 2 RELEASED 19 Sep 2013...
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