Refrigeration Service Operations
89
Disassembly
1. Remove the piston end cap (round end).
2. Remove the cotter pin from the castle nut and
remove the nut.
3. Remove the spring and piston.
4. Loosen all the bolts on the bellows end cap.
5. Break the gasket free and remove the end cap.
6. Note the number of shims next to the cap.
These can be reused.
7. Remove the bellows.
8. Inspect all the parts.
a. Piston and cap for wear (scuff marks).
b. Body for stripped threads.
c. Bellows end cap for damage in the pilot
hole.
NOTE: The bellows is normally replaced.
9. Clean the parts that will be reused.
Reassembly
1. Install the bellows with the O-ring in the
housing.
2. Center the spring on the bellows shoulder.
3. Oil the gasket, install it on the housing, and
place the shims in the end cap (use same
number as removed). Tighten the end cap in
place with the vent hole closest to the outlet
opening of the valve housing.
4. Install the piston, spring and tighten the castle
nut until it is firmly seated against the bottom
of the piston.
CAUTION: This end cap is under slight
spring pressure.
1.
Inspect Cap
2.
Inspect Spring
3.
Shims
Figure 59: Inspect the Parts
1.
Inspect for Wear
Figure 60: Inspect for Wear
1.
Inspect for Damage
Figure 61: Inspect for Damage
Summary of Contents for Spectrum DE 30-2
Page 4: ...4...
Page 12: ...Safety Precautions 12...
Page 16: ...Specifications 16...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Dampers Figure 12 Back View of Unit 1 2 AGA215...
Page 42: ...Operating Instructions 42...
Page 48: ...Electrical Maintenance 48...
Page 106: ...Structural Maintenance 106...
Page 110: ...Mechanical Diagnosis 110...
Page 114: ...Remote Evaporator Specifications 114...
Page 116: ...Remote Evaporator Maintenance Inspection Schedule 116...
Page 122: ...Remote Evaporator Electrical Maintenance 122...
Page 126: ...Remote Evaporator Refrigeration Service Operations 126...
Page 128: ...Remote Evaporator Structural Maintenance 128...
Page 130: ...Remote Evaporator System Diagnosis 130...
Page 134: ...Wiring and Schematic Diagrams Index 134...
Page 135: ...135 Schematic Diagram Page 1 of 2...
Page 136: ...136 Schematic Diagram Page 2 of 2...
Page 137: ...137 Wiring Diagram Page 1 of 4...
Page 138: ...138 Wiring Diagram Page 2 of 4...
Page 139: ...139 Wiring Diagram Page 3 of 4...
Page 140: ...140 Wiring Diagram Page 4 of 4...