With a service gauge manifold set connected to a refrigerant compressor as shown in the illustration, which arrangement of the gauge manifold set valves and compressor service valves would allow for simultaneous reading of the compressor suction and discharge pressures? Illustration GS-RA-03

Illustration GS-RA-03: the U.S. Coast Guard has not released this illustration.

Question

With a service gauge manifold set connected to a refrigerant compressor as shown in the illustration, which arrangement of the gauge manifold set valves and compressor service valves would allow for simultaneous reading of the compressor suction and discharge pressures? Illustration GS-RA-03

Illustration GS-RA-03: the U.S. Coast Guard has not released this illustration.

Accepted Answer

Option B: Valves "2" and "5" both closed, along with valves "1" and "6" both cracked open off their backseats.. Cracking compressor suction and discharge service valves off their backseats while keeping manifold hand valves closed allows simultaneous gauge connection and pressure monitoring without isolating the system.