Thermo King 088669, Руководство пользователя

Страница: 94 / 136

Refrigeration Service Operations (Rev. 04/03)
80
8. Remove the spring clip. Observe the slot in the spool
shaft and slide piston away from this slot.
9. Remove the piston.
10. Remove the center section and stem assembly.
11. Inspect the following parts for wear and damage:
a. Bottom cap sealing and support areas.
b. Center section, sealing surface.
c. Top cap, sealing and support surface.
The following parts will be discarded:
d. Stem assembly.
e. All gaskets.
f. Teflon seal and O-ring.
12. Remove the screen.
NOTE: The valve body cannot be reconditioned. Seat posi-
tions change and improper sealing will result.
Installation
NOTE: Three-way valve kit No. 156 is used to repair
three-way valves.
After cleaning and inspecting all parts, reassemble the
valve. Clean solder off the condenser line and condenser
head with sandpaper and tubing brush.
1. Install the screen into the bottom cap.
2. Install new stem into the center section.
3. Install new gaskets on both sides of the valve body. Dip
gaskets in compressor oil (use same type of oil that is
used in the system) before installing.
4. Install a new O-ring on the piston, then place the Teflon
seal over the O-ring.
5. Install the piston on the stem and attach with spring
clip.
NOTE: The Teflon seal will stretch when it is
installed. To prevent this from becoming permanent
(and possibly malfunction), the top cap must be
installed immediately.
6. Install the spring and top cap.
7. Line up the passageways in the cap and body. Failure to
line up the holes will result in improper operation of the
valve.
8. Install bolts and tighten in rotating sequence.
9. Solder condenser line to the condenser inlet.
10. Install pilot solenoid line and pressurize system with
refrigerant to check for leaks.
11. If there are no leaks, evacuate the system and recharge
with refrigerant.
12. Run the unit to check for proper three-way valve opera-
tion.