If a vacuum filter lost vacuum suddenly, the most probable cause would be a ___.

• A. Vacuum Pump Malfunction or Broken Vacuum Hose
• B. Clogged Filter Cartridge
• C. Power Failure to the System
• D. Leaking Seals Somewhere Else

Answer: (A)

When a vacuum filter loses vacuum suddenly, the first thing to consider is the source that actually creates the suction. A sudden drop points to a problem in the vacuum generation path—the pump or the delivery line—since any break or malfunction there disconnects the system from its pressure source immediately. A clogged filter cartridge, by contrast, tends to reduce suction gradually as debris builds up and restricts flow rather than causing an abrupt loss. A power failure would stop the pump entirely, but if the system is still powered, a sudden vacuum loss is most consistently explained by a pump malfunction or a broken vacuum hose. Leaks somewhere else can cause vacuum loss too, but the most likely immediate cause for a sudden drop is failure in the pump or hose.