100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Compression - Refrigeration System Operations Exam Questions and Answers $10.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. Refrigeration Machine Operator
  4.  
  5. Refrigeration machine operator

Exam (elaborations)

Compression - Refrigeration System Operations Exam Questions and Answers
 7 views  0 purchase
  • Course
  • Refrigeration machine operator
  • Institution
  • Refrigeration Machine Operator

Why must you avoid running a refrigeration system below 14 kPa when pumping down - Answer-A slightly positive system pressure is required to prevent air infiltration This safety control device used on a centrifugal compressors allows the motor to be started unloading - Answer-Vane closed switch ...

[Show more]

Preview 1 out of 3  pages

Document information

  • September 9, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • compression refrigeration system operations exam
  • why must you avoid running a refrigeration system

Written for

  • Refrigeration machine operator
  • Refrigeration machine operator

Seller

avatar-seller
lectknancy

Reviews received

Content preview

Compression - Refrigeration System
Operations Exam Questions and
Answers
Why must you avoid running a refrigeration system below 14 kPa when pumping down -
Answer-A slightly positive system pressure is required to prevent air infiltration

This safety control device used on a centrifugal compressors allows the motor to be
started unloading - Answer-Vane closed switch

What is the purpose of the chilled water flow switch - Answer-Protects the chiller from
freezing due to lack of waterflow

Where can refrigeration system log sheets be obtained from - Answer-1. Refrigeration
system manufacturers.
2. Inspection and insurance companies.
3. Developed by the refrigeration system operator.

Which of the following is not a benefit of a preventative maintenance program - Answer-
Allows for the accumulation of all spare parts for each piece of equipment in case of a
major breakdown

What is the symptom of a refrigeration system that has high suction pressure due to an
oversized expansion valve - Answer-An abnormally cold suction line

If the compressor fails to start but the motor is running, which of the following could be a
cause - Answer-The coupling is sheared or broken

Why is it recommended that a refrigeration log sheet be used - Answer-It can indicate
changes in the system operation

The safety control in a centrifugal compressor, which ensures the compressor will only
be started under a no-load condition, it's called - Answer-Vane closed switch

Which of the following steps is not a step in the start of a reciprocating or Rotary
compressor refrigerating system - Answer-Valves in lines connecting suction gauges
should be closed

If the temperature drops 2.5 - 3°C, below the set point, this Safety control device used
on a centrifugal compressor will shut down the compressor. - Answer-Chilled water low-
temperature cut out

Vane closed switch - Answer-Allows the motor to be started under no load

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller lectknancy. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79271 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.49
  • (0)
  Add to cart