Figure 7-5. Vacuum Pump - Head Plate And Motor View - Thermo Scientific 42i Instruction Manual

Thermo Fisher Scientific
curves away from the valve hole, remove the screw, flip the valve over
and reinstall.
6. Match the holes of the PTFE head gasket ("V") with the head seal
surface, install the head lid, and tighten the two center bolts with M4
lock washers first and then cross alternate tightening of the perimeter
bolts. Re-tighten the two center bolts after the other bolts are tight.
Figure 7–5. Vacuum Pump – Head Plate and Motor View
Vacuum Pump Diaphragm and Valve Replacement
Model 42i Trace Level Instruction Manual
Servicing
Diaphragm
Installation
Valve
Installation
7-13