Refrigeration Service Operations (Rev. 1/99)
59
1.
Sealing Surface
2.
0.995 to 0.998 in. (25.27 to 25.35 mm)
Pistons
1
AGA344
2
6.
Measure the pistons. Replace the piston(s) if the O.D. is
greater than 0.998 in. (25.35 mm) or less than 0.995 in.
(25.27 mm).
7.
Inspect the piston sealing surfaces. Replace the pistons
if the sealing surfaces are worn or damaged.
8.
Inspect the valve body. The piston bores should be
clean and undamaged. The pistons should move freely
in the piston bores. Clean or replace if necessary.
9.
Inspect the end cap valve seats. The end cap valve seats
should be clean and undamaged. Clean or replace if
necessary.
Discharge Check Valve Assembly
AGA298
1
2
3
4
5
1
2
3
6
6
1.
Nut
2.
End Cap
3.
Piston
4.
Valve Body
5.
Spring
6.
Sealing Washer
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Page 107: ...97 Model 10 and 20 Schematic Diagram...
Page 108: ...98 Model 10 Wiring Diagram...
Page 109: ...99 Model 20 Wiring Diagram...
Page 110: ...100 Model 20 Single Phase with Heat Option Schematic Diagram...