Hobart 6T28-600CL Operation And Maintenance Manual page 40

OM-2244 / Operation and Maintenance Manual
DCS-600/ Series 500082 / Solid State Transformer-Rectifiers
1. Abnormal current fluctuation,
voltage nearly constant
GPU Will Not Turn Off
1. Contactor fails to open
No Voltage Output
1. Unit on, but no output voltage
December 15, 2014
a. Loose cable connections at
output
a. Contacts sticking in contactor
a. Protective circuit tripped
b. Component failure in protective
circuit
c. Control circuit board failure
Check for overheated connections
and tighten.
Clean contacts or replace
contactor, whichever is needed.
Determine and correct cause of
trip. Then reset and restart unit.
Find the defective component and
replace it.
Check control board per Section 2-
2 and replace it if faulty.
Chapter 2-1
Page 8