Thermo King KD-II SR, Manual

Page: 124 / 182

Refrigeration Service Operations (Rev. 04/03)
110
4. Clean the suction line to a bright polished condition.
Install the feeler bulb clamps and the feeler bulb on the
side of the suction line in its former position. The feeler
bulb must make good contact with the suction line or
the operation will be faulty. Wrap with insulating tape.
5. Pressurize the low side and test for leaks. If no leaks are
found, evacuate the low side.
6. Open the refrigeration valves and place the unit in oper-
ation.
7. Test the unit to see that the expansion valve is properly
installed
Cleaning In-line Screen
1. Perform a low side pump down; bleed pressure back to
1 psig (7 kPa).
1. Suction Line
2. Capillary Bulb
3. End View
Location of Expansion Valve Bulb
1. Top View
Completely Wrap Bulb with Tape
➌
2. Remove the liquid line fitting.
3. A small tool with a slight hook may be needed to pull
screen from the expansion valve.
4. Clean the screen and reinstall.
NOTE: Outlet screen points toward the distributor.
HEAT EXCHANGER
Removal
1. Remove the refrigerant charge.
2. Remove the evaporator top cover.
3. Remove the mounting bolts that hold the heat
exchanger on the bulkhead.
4. Disconnect the equalizer line from the suction line.
5. Disconnect liquid outlet line flare nut from the expan-
sion valve.
6. Note the position of the feeler bulb on the side of the
suction line. Remove the expansion valve feeler bulb
from the suction tube.
7. Unsolder the suction line at the evaporator coil end.
1. Soldier-in Expansion Valve Screen
(P/N 66-6047)
2. Solder-in Type (P/N 66-5993)
KD-II SR Expansion Valve