Receiver Tank Pressure Check Valve Test; Receiver Tank Replacement; Removal; Installation - Thermo King T-1000R Series Maintenance Manual

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. From the Interface Board Test Mode select
Purge Valve.
10. Momentarily (for approximately 1 second)
energize the PV with the Interface Board Test
Mode. The low side pressure should rise
slightly. If the low side pressure does not rise,
the PV is not opening. Check the continuity of
the wiring and the solenoid coil before
assuming the solenoid is faulty.
11. Back seat the receiver tank outlet valve and
the suction service valve. Perform a
"Refrigerant Gauge Removal" procedure.
Receiver Tank Pressure Check
Valve Test
1. Attach a gauge manifold to the suction service
valve and the discharge service valve. Attach
another low pressure gauge to the suction
access port located in the suction line near the
accumulator inlet. A low loss fitting must be
used on the hose connected to the suction
access port.
2. Operate the unit in low speed cool.
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. It it does, there could be a leak
through one (or more) of following
components: hot gas solenoid, purge valve, or
receiver tank pressure check valve.
7. Check the temperatures of the refrigeration
lines on each side of the receiver tank pressure
check valve by hand. A temperature
difference between the two sides of the
receiver tank pressure check valve indicates it
is leaking.
Refrigeration Service Procedures
8. Back seat the receiver tank outlet valve and
the suction service valve, and remove the
gauges to return the unit to normal operation.

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: Use a heat sink to prevent
damage.
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