74
TK 56433-5-MM-EN
leaks. If no leaks are found, evacuate the low side.
4.
Open the refrigeration valves and place the unit in
operation. Check the refrigerant charge and the
compressor oil. Add as required.
Three-Way Valve Repair
N
No
otte
e:: The three-way valve can be repaired in the unit if
leakage or damage to the PTFE seals should
occur. There is usually enough give in the copper
tubing to separate the three sections of the valve
without unsoldering any tubes.
Figure 88.
Three-Way Valve
1.
Cap
7.
Clip
2.
End Cap
8.
Seat
3.
Check Valve
9.
Gaskets
4.
Spring
10.
Stem Assembly
5.
Piston
11.
Screen
6.
Seal
12.
Bottom Cap
Removal/Disassembly
1.
Recover the refrigerant charge.
2.
Clean the exterior surface of the valve.
3.
Remove the line from the three-way valve to the
pilot solenoid.
N
NO
OT
TIIC
CE
E
E
Eq
qu
uiip
pm
me
en
ntt D
Da
am
ma
ag
ge
e!!
D
Do
o n
no
ott ffo
orrcce
e tth
he
e tto
oo
oll iin
ntto
o tth
he
e b
brra
assss o
orr a
ag
ga
aiin
nsstt tth
he
e
b
bo
ollttss..
4.
Loosen the four 1/4 inch Allen head screws (DO
NOT REMOVE OR CAP MAY POP OFF); use tool P/N
204-424 to break the gasket at each side of the
center section.
Figure 89.
Gasket Tool P/N 204-424
5.
Remove the four bolts from the valve.
6.
Remove the end cap and spring.
7.
Remove the spring clip which secures the stem to
the piston. Slide piston off the stem.
8.
Remove the seat and stem assembly.
9.
Inspect the following parts for wear or damage:
•
Bottom cap, sealing, and support area.
•
Seat, sealing surface.
•
End cap, sealing, and support surface.
The following parts will be discarded:
•
Stem assembly.
•
All gaskets.
•
Piston seal.
10. Remove the screen. If any particles drop from the
screen into the discharge line, the discharge line
must be removed at the compressor.
N
No
otte
e:: The valve body cannot be reconditioned.
Seat positions change and improper sealing
will result.
