The repaired machine could not be vacuumed, and the engineer found that it had no effect when the customer machine was repaired and replaced with a new solenoid valve.
The machine reported for repair could not be vacuumized, and the engineer found that it did not work when repairing the customer's machine and replacing the new solenoid valve.
The repair machine can't vacuumize, and the engineer found that it didn't work when repairing the customer machine and replacing it with a new solenoid valve.