Electrician Practice Tests

As per EPA guidelines a major repair means, maintenance or service of which of the following component?

Which of the following recovery method does not pull the oil from the system during evacuation?

If a large vacuum pump is used during evacuation …………….

If non condensables present in the operating refrigeration system ………………………….

Which of the following is the best leak checking method in operating low pressure refrigeration system?

Heating a refrigerant bottle will speed of ………………………….

Water must be circulated through chillers during evacuating a system to avoid ……………

In low pressure refrigeration system, which of the following is the good indicator of leak?

What happens to the system when moisture presents in an operating system?

If a system has a large leak enough to prevent evacuation must be brought to …………………. Before being opened.