Chapter 9 – Trouble Shooting Guide

Trouble Shooting Guide

The vacuum gate does not open when in vacuum mode

• Low Battery Voltage
• Venturi gate limit switch is not activated
• The Pressure Switch detects pressure in the vessel
• Loose wire or broken wire on pressure switch circuit
• Low air pressure

Poor Suction

• Plug in suction line
• Discharge air is on during vacuum cycle (valve malfunction)
• Inadequate air pressure or volume
• Air leak in the suction hose
• The tank purge valve is open

Does not discharge

• Plugged discharge line
• Vacuum gate limit switch not activated
• Discharge Air Regulator is not set properly
• The 2 – 1″ ball valves on the discharge line are off or plugged
• Plugged check valve(s)

Air discharge from Vacuum/inlet Line

• Discharge line/hose plugged
• Pressure switch setting or malfunction
• Pressure switch line plugged
• Venturi gate limit switch not set properly