Ametek Amrel PLA Series Operation Manual page 148

5) Ensure rubber diaphragm has an air-tight fit with the piping system, and connect the solenoid
assembly back into place.
6) Fasten the screws slowly to make sure the four corners are balanced to prevent a leakage.
7) Place the coil assembly over the solenoid and re-bolt it tightly.
M470039-01 REV-F Page 147