The primary function of a pressure gauge is to de-energize a… The primary function of a pressure gauge is to de-energize a burner safety circuit and shut down the burner if the water level in the system drops below a safe operating level. Read Details
The only techniques used for leak testing are the standing p… The only techniques used for leak testing are the standing pressure method and the standing vacuum method. Read Details
Refrigerants are selected for their ability to absorb, trans… Refrigerants are selected for their ability to absorb, transport, and release heat at the proper temperature and pressure. Read Details
An evaporation test is performed by opening a low water fuel… An evaporation test is performed by opening a low water fuel cutoff blowdown valve by hand. Read Details
Adjusting draft controls without proper training and equipme… Adjusting draft controls without proper training and equipment can cause poor air flow through a boiler. Read Details
A(n) ___ hazard area is a building or room that is used as a… A(n) ___ hazard area is a building or room that is used as a shop and related storage facility, light manufacturing plant, automobile showroom, or parking garage. Read Details
Adjusting draft controls without proper training and equipme… Adjusting draft controls without proper training and equipment can cause poor air flow through a boiler. Read Details
After blowing down the water column and gauge glass, the wat… After blowing down the water column and gauge glass, the water should ___ the gauge glass. Read Details
The ___ uses a four-color diamond-shaped sign to display bas… The ___ uses a four-color diamond-shaped sign to display basic information about hazardous materials. Read Details
___ prevents blower operation at startup until the damper re… ___ prevents blower operation at startup until the damper reaches purge position. Read Details