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Pressure Regulator
Replacement
Thermo Fisher Scientific
5. Remove the chamber and replace with new chamber.
Use the following procedure to replace the pressure regulator
Equipment Required:
Pressure regulator
Wrenches, 7/16 and 9/16-inch
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove plumbing.
3. Remove fitting from bottom of the pressure regulator by holding the
assembly in place with a 9/16-inch wrench as shown in
loosening the pressure regulator fitting.
7/16-inch fitting
9/16-inch fitting
Figure 7-16. Replacing the Pressure Regulator
4. Remove the pressure regulator and replace with a new unit.
5. Reconnect plumbing and check for leaks. Refer to "Leak Test and Pump
Checkout" in this chapter.
Pressure Regulator Replacement
(Figure
Figure 7-16
Capillary
Model 146i Instruction Manual
Servicing
7-16).
and
7-49
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Troubleshooting
