Gast AT05 Series - Manual (Page 7)

TROUBLESHOOTING CHART
PART NO. 70-299 (REV-C)
Low High Pump Motor Reason and remedy
Vacuum Pressure Vacuum Pressure Overheat Overload for problem.
G G G G Filter dirty.
Clean or replace.
G G G Muffler dirty.
Clean or replace.
G G G Vacuum line collapsed.
Repair or replace.
G G G Relief valve set too high.
Inspect and adjust.
G G
Relief valve set too low.
Inspect and adjust.
G G G G
Plugged vacuum/pressure line.
Inspect and repair.
G G
Vanes sticking.
Clean or replace.
G G Vanes worn.
Replace.
G G G G Foreign material- in pump.
Inspect and clean.
G G G G Motor not wired correctly.
Check wiring diagram and line voltage.
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