| The coil temperature measured at the expansion valve sensing bulb of an operating system is 10°F. The low side pressure with the compressor running as shown on the gauge illustrated indicates 15 psig. What adjustments or changes, if any, should be made to the system? Illustration GS-RA-16 |
| A) The liquid line strainer is obviously fouled and needs to be cleaned. |
| B) The expansion valve should not be adjusted, as the degree of superheat is within the accepted range. |
| C) The filter drier needs to be changed to increase the suction pressure. |
| D) The evaporator coils need to be steam cleaned or high-pressure washed. |
