Thermo King 919180, Руководство пользователя

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Refrigeration Service Operations
107
High Pressure Cutout Switch
Removal
1. Front seat the three-way valve bypass check
valve
2. Start the unit and pump down the low side.
3. Stop the unit.
4. Shift the unit into heat using the relay board
test.
5. Disconnect the wires and remove the high
pressure cutout switch from the discharge
tube.
Installation
1. Apply a refrigerant Loctite TM to the threads of
the high pressure cutout switch.
2. Install and tighten high pressure cutout switch
and reconnect the wires.
3. Pressurize the refrigeration system and test for
leaks. If no leaks are found, evacuate the
system.
4. Open (back seat) the three-way valve bypass
check valve.
High Pressure Relief Valve
Removal
1. Remove the refrigerant charge.
2. Unscrew and remove the high pressure relief
valve.
Installation
1. Apply a refrigerant Loctite TM to the threads of
the high pressure relief valve.
2. Install and tighten the high pressure relief
valve.
3. Pressurize the refrigeration system and test for
leaks. If no leaks are found, evacuate the
system.
4. Recharge the unit with refrigerant and check
the compressor oil.
Pilot Solenoid
Removal
1. Recover refrigerant from the unit.
2. Disconnect the lines to the solenoid and
immediately cap to prevent moisture and air
from entering the system.
NOTE: The lines from the three-way valve to
the pilot solenoid will leak refrigerant at a
high velocity and should be capped.
3. Disconnect the electrical wires and remove the
pilot solenoid.
Installation
1. Replace the pilot solenoid in the unit.
2. Remove the caps from the lines and connect
lines to the pilot solenoid. Connect line from
the three-way valve first. Connect wires to the
valve.
3. Evacuate and charge the unit with refrigerant.
4. Open (back seat) the three-way valve bypass
check valve.
5. Check for leaks.
Receiver Tank
Removal
1. Remove the refrigerant charge.
2. Unsolder the inlet tube from the receiver tank.
3. Unsolder the filter drier line from the receiver
tank outlet tube.
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 to the receiver tank.