Thermo Scientific 1160, Instruction Manual

Page: 42 / 52

Figure 7
STEP 13 . Rotate the rotor shaft so that flat faces up (12:00). Position piston cup at
bottom dead center of cylinder sleeve.
STEP 14. Slide the connecting rod assembly onto the shaft until the eccentric face
positively stops against the bearing. Align the eccentric setscrew with the flat of the
shaft. Rotate the eccentric and shaft 90 degrees so the set screw is visible through
the access hole in the housing, and tighten set screw to 125 in-lbs.
STEP 15. Align the flat on the fan with
the flat on the motor shaft and slide the
fan back onto the motor shaft, making
sure you position the fan clip in the
same orientation as it was before you
removed it. Incorrect orientation of the
fan will not provide adequate cooling of
the compressor.
Hold the sleeve down against the
housing with one hand, and slowly
ensure all components are lined up
properly. As the piston travels up and
down it will also rock from side to side.
This is a feature of the WOB-L Piston.
CHECK OPERATION
B-6