If it is necessary to increase the operating...

Question 1 / 2066636eee28f7522a1c51ee0a

Question 1 of 2066636eee28f7522a1c51ee0a

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? Illustration RA-0014

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Question 1 of 20

66636eee28f7522a1c51ee0a

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? Illustration RA-0014

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🔍 Key Concepts

• This is a condenser water-regulating valve for a refrigeration system that uses spring force vs. bellows force to control water flow and head pressure. • Increasing operating head pressure means the refrigerant pressure must get higher before the valve opens to allow more cooling water. • Part "2" adjusts the spring compression, while part "4" encloses the pressure-actuated bellows that reacts to condenser pressure.

💭 Think About

• Ask yourself: to make the system run at a higher head pressure, should the valve open sooner or later as pressure rises? • Which adjustment—changing the spring setting at "2" or mechanically affecting the bellows at "4"—would change the pressure at which the valve starts to open? • If the bellows force represents refrigerant pressure pushing the valve open, does increasing or decreasing spring compression make it harder for the bellows to move the valve?

✅ Before You Answer

• Be clear that higher operating head pressure = valve stays more closed until a higher pressure is reached. • Identify which part in the illustration is clearly drawn as an adjustment screw for spring tension (look at the threads and locknut). • Verify that the bellows at "4" is a sensing element, not normally something you adjust directly in service to change the set pressure.

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Question 1 of 20

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? Illustration RA-0014

"2" should be turned to further compress the spring

"2" should be turned to relax the compression of the spring

"4" should be rotated to compress the enclosed bellows

"4" should be rotated to relax the enclosed bellows

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Question 1 / 2066636eee28f7522a1c51ee0a

Question 1 of 2066636eee28f7522a1c51ee0a

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? Illustration RA-0014

Back

Question 1 of 20

66636eee28f7522a1c51ee0a

If it is necessary to increase the operating head pressure of the refrigeration system using the device shown in the illustration, what should be done? Illustration RA-0014

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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