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Section V User Service Information
TROUBLESHOOTING
Symptom
Possible Cause(s)
Corrective Action
Low or No Vacuum
(motor running okay)
Tank drain check valve blocked open
Clean tank drain check valve
Clogged vacuum line
Locate and remove clog
Vacuum controller stuck open
Repair and replace vacuum controller
Vacuum leaks
Locate and fix leak
Worn or broken vanes
Exchange pump head
Motor Does Not Run
"Tripped" breaker
Reset breaker
"Tripped" motor overload
Reset motor overload
Motor failure
Replace Motor
Failed control component
Replace failed component
"Vacuum Pump Error" fault
See "Vacuum Pump Error" fault below
"Tank Float Error" fault
See "Tank Float Error" fault below
Liquid Comes
Out Exhaust
Unit unleveled
Level unit
Foam in tank
Use non-foaming line cleaner
"Vacuum Pump Error"
Fault
Incorrect electrical installation
Correct installation
Motor failure
Replace motor
"Tripped" motor overload
Reset motor overload
"Tank Float Error"
Fault
Separating tank overfilled
Drain separation tank
Separation tank drain check valve stuck Clean separation tank drain check valve
Clogged drain line
Locate and remove clog
Drain shut-off valve closed
Open drain shut-off valve
Tank float switch stuck
Replace tank float switch
Facility drain elevated above tank drain Raise unit
Maintenance Required Preventative maintenance due
Perform preventative maintenance