Thermo King T-1000R, Maintenance Manual

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Refrigeration Maintenance 10-47
3. Front seat the receiver tank outlet valve and allow the low side to pump down to 0 to 5 in. Hg vacuum (0 to -17 kPa).
4. Turn the unit Off.
5. Front seat the suction service valve to isolate the low side while it is still in a vacuum.
6. Watch the low pressure gauge attached to the suction access port. The low side pressure should not rise. If it does, there could
be a leak through one (or more) of following components: hot gas solenoids, purge valve, or hot gas bypass solenoid.
7. Use a jumper wire to jump the CIS wire at the condenser inlet solenoid to +12 Vdc to close the condenser inlet solenoid.
8. Use the Mechanics/Premium HMI Control Panel to enter the Interface Board Test Mode. Refer to the appropriate
Microprocessor Diagnostic Manual for specific information about the Interface Board Test Mode.
9. Energize the Zone 1 liquid line solenoid with the Interface Board Test Mode and leave it energized.
10. Crack the receiver tank outlet valve open and allow refrigerant into the low side until the low side pressure is equal to the
receiver tank pressure.
11. De-energize the Zone 1 liquid line solenoid with the Interface Board Test Mode.
12. Energize the receiver tank pressure solenoid with the Interface Board Test Mode and leave it energized.
13. Watch the gauges attached to the discharge service port and the receiver tank. The discharge pressure should drop and the
receiver tank pressure should rise until they are equal. If not, the receiver tank pressure solenoid is not opening. Check the
continuity of the wiring and the solenoid coil before assuming the solenoid is faulty.
14. De-energize the receiver tank pressure solenoid with the Interface Board Test Mode.
15. Remove the a jumper wire from the CIS wire at the condenser inlet solenoid.
16. Back seat the receiver tank outlet valve and suction service valve. Perform a “Refrigerant Gauge Removal” procedure.
RECEIVER TANK REPLACEMENT
Removal
1. Recover the refrigerant charge.
2. Unsolder the inlet tube from the receiver tank.
3. Unsolder the filter drier line from the receiver tank outlet valve.
4. Unbolt the mounting brackets and remove the receiver tank from the unit.
Installation
1. Place the receiver tank in the unit and install the mounting bolts and nuts loosely. Position the receiver tank so the sight glass
is clearly visible and the outlet tube lines up.
2. Solder the inlet tube from condenser check valve tube to the receiver tank.
3. Solder the filter drier line to the receiver tank outlet valve.
4. Tighten the receiver tank mounting hardware securely.
5. Pressurize the system and test for leaks.
6. If no leaks are found, replace the liquid line drier then evacuate the
system.
7. Recharge the unit with refrigerant and check the compressor oil.
SOLENOID VALVE REPLACEMENT
Removal
1. Recover the refrigerant charge.
2. Remove the coil from the valve.
3. Remove the valve mounting hardware if used.
4. Unsolder the refrigeration lines from the valve and remove the valve from the unit.
CAUTION: Do not run scroll compressor in a vacuum for more than 1 minute.
CAUTION: Use a heat sink to prevent damage.