Owner's manual

TW-407 Rev.-

8. To reset the regulator, loosen the lock nut on the adjusting screw. Raise the set point by turning the

-

ment, repeat steps 5 and 6 to check the setting before reinstalling the regulator on the liquid container.

9. 

arrow points away from the pressure-building valve.

Adjustment of the economizer regulator should be accomplished with the regulator removed from the



1. Leak test joints between the high pressure cylinder regulator and the dump valve. Joints must be leak

free before proceeding.

2.

3. Open the high-pressure cylinder valve.

4. Set the high-pressure regulator above the desired set point for the economizer.

5.

6. When the regulator has been adjusted, the economizer set point is indicated on the upstream pres-

sure gauge.

7. To reset the regulator, loosen the lock nut on the adjusting screw. Raise the set point by turning the

ment, repeat steps 5 and 6 to check the setting before reinstalling the regulator on the liquid container.

8.-

ting threaded into the side port.

User adjustment of the pressure gauge or liquid-level gauge is not possible. If the gauges are malfunc-

tioning, they must be replaced. Close both isolation valves (V-8 and V-10) and immediately open the



the pressure gauge (PI-1) indicates zero it is safe to work on the circuit.

Cryogenic containers are two containers, one within the other. The space between the containers acts

-

tenance system. Each serves a very important part in the useful life of the container. The high technol-

-

tunately, the perfect vacuum cannot be achieved since trace gas molecules begin to enter the vacuum

space from the moment of manufacture. The vacuum-maintenance system consists of materials that

gather trace gas molecules from the vacuum space. The maintenance system can perform its function



it can no longer maintain the vacuum integrity of the container. The change will be very gradual and



following symptoms may appear:

Instruments

Vacuum

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