TROUBLESHOOTING CHART
Low
High
Pump
Motor
Reason and remedy
Vacuum Pressure
Vacuum
Pressure
Overheat Overload for problem.
•
•
At pump
•
•
Filter dirty.
Clean or replace.
•
At pump
•
•
Muffler dirty.
Clean or replace.
•
At pump
•
•
Vacuum line collapsed.
Repair or replace.
•
•
•
•
Relief valve set too high.
Inspect and adjust.
•
•
Relief valve set too low.
Inspect and adjust.
•
•
At pump
At pump
•
•
Plugged vacuum/pressure line.
Inspect and repair.
•
•
Vanes sticking.
Clean or replace.
•
•
Vanes worn.
Replace.
•
•
Shaft seal worn.
Replace.
•
•
•
•
Dust or offset powder in pump.
Inspect and clean.
•
•
•
Motor not wired correctly.
Check wiring diagram and line voltage.
•
•
•
•
Running at too high an RPM.
Check wiring diagram and line voltage.
www.gastmfg.com
ISO 9001 & 14001 CERTIFIED
We have Gast Certified Service Centers throughout the world.
For the most up-to-date
listing, contact one of our sales offices below:
Gast Hong Kong
Room 6,9/F
New Commerce Centre
19 on Sum Street, Shatin
N. T. Hong Kong
Ph: (852) 2690 1066
Fax: (852) 2690 1012
www.gasthk.com
European Sales & Service Headquarters
Gast Group Limited
A Unit of IDEX Corporation
Unit 11, The I O Centre
Nash Road
Redditch B98 7AS
United Kingdom
Tel: +44 (0) 1527 504040
Fax: +44 (0) 1527 525262
www.gastmfg.com
www.jun-air.com
Gast Manufacturing, Inc.
P.O. Box 97
2300 S. Highway M139
Benton Harbor, MI 49022
Ph: 269/926-6171
FAX: 269/925-8288
www.gastmfg.com
