| What is the primary function of the evaporator pressure regulator valves installed in a multi-box refrigeration system? |
| A) limit the minimum evaporator coil pressure on those so fitted to prevent excessively low evaporator temperatures |
| B) limit the maximum evaporator coil pressure on those so fitted to prevent excessively high evaporator temperatures |
| C) maintain equal evaporator pressures among all system evaporators despite differences in box temperatures |
| D) maintain a constant compressor suction pressure regardless of changes in system demand |
