Ohio Refrigerant Contractor
Sample Questions for the Ohio Refrigerant Contractors Exam
Compressors can have from one to ___________ cylinders.
_____________ is a means of passing air over food in an open display case.
- Single-duty case
- Air curtain
- Condensing unit
- Circuit cold plate
What is a gauge manifold used for?
- checking pressures
- adding oil
- all of the above
A common cause of excessive head pressure is ________________.
- undercharged system
- short cycling
What is used to make service stems leak proof?
- multiple evaporator installation
- epoxy resin
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