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? GS-RA-16 |
A) The evaporator coils need to be steam cleaned or high pressure washed. |
B) The liquid line strainer is obviously fouled and needs to be cleaned. |
C) The expansion valve should not be adjusted, as the degree of superheat is within the accepted range. |
D) The filter drier needs to be changed to increase the suction pressure. |