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Instruction Booklet
Page 24
Effective: January 2012
Section 7: Troubleshooting and
Maintenance
7.1 Level of Repair
This manual is written with the assumption that only ATS trouble-
shooting will be performed. If the cause of malfunction is traced
to an ATC-300+, the unit should be replaced with a new unit.
The malfunctioning unit should then be returned to EATON Electri-
cal for factory repairs.
Table 3. Troubleshooting Guide
SYMPTOM
All front panel indicator LED's are off.
"Unit Status" LED is not blinking.
One or more voltage phases read incorrectly.
Front panel pushbuttons do not work.
Unit did not accept new setpoints via front panel.
Source 1 or Source 2 is not available when it should
be.
Unit displays "LOCK-OUT".
Unit displays "INHIBIT".
Unit displays "SOURCE 1 DEVICE".
Unit displays "SOURCE 2 DEVICE".
PROBABLE CAUSE
Control power is deficient or absent.
ATC-300+ is malfunctioning.
Control power is deficient or absent.
ATC-300+ is malfunctioning.
Incorrect wiring.
ATC-300+ is malfunctioning.
Bad connection inside the ATC-300+.
Operator error.
No pushbuttons pressed for 2.5 minutes.
Voltage and/or frequency are not within setpoint values.
Lockout circuit wiring problem.
No contact closure at Emergency Inhibit Input
Source 1 closed contacts did not open when Source 1 breaker opened
(within 6 seconds).
Source 1 closed contacts did not close when Source 1 breaker closed
(within 6 seconds).
Source 2 closed contacts did not open when Source 2 breaker opened
(within 6 seconds).
Source 2 closed contacts did not close when Source 2 breaker closed
(within 6 seconds).
For more information visit: www.chfire.com
7.2 ATC-300+ Controller Troubleshooting
The Troubleshooting Guide (Table 3) is intended for service per-
sonnel to identify whether a problem being observed is external
or internal to the unit. For assistance with this determination,
contact EATON. If a problem is identified to be internal, the unit
should be returned to the factory for replacement.
WHILE PERFORMING TESTING, IF AN UNDESIRED OR UNDOCU-
MENTED RESULT OCCURS, FIRST CONTACT THE LOCAL EATON
FIRE PUMP CONTROLL ER AGENT. IF THE RESULT IS NOT COR-
RECTED, CONTACT THE TECHNICAL SUPPORT CENTER AT
+1-877-860-7955.
Verify that control power is connected at J7 and that it is within
specifications.
Replace the unit.
Verify that control power is connected at J7 and that it is within
specifications.
Replace the unit.
Verify voltage with multimeter. Check wiring.
Replace the unit.
Verify ground connection at J-5, Pin 12
Replace the unit.
Enter the correct Password and change the setpoints.
Avoid intervals of 2.5 minutes of inactivity with pushbuttons
when changing setpoints.
Verify voltage and/or frequency with multimeter. Check the pro-
grammed setpoint values.
Check lockout circuit wiring.
Check Emergency Inhibit Wiring at J8, Pins 7 and 8.
Check the Source 1 closed control input wiring on J-4, Pins 1
and 2 and J-8, Pins 1 and 2.
Check the Source 1 closed control input wiring on J-4, Pins 1
and 2 and J-8, Pins 1 and 2.
Check the Source 2 closed control input wiring on J-4, Pins 3
and 4 and J-8, Pins 3 and 4.
Check the Source 2 closed control input wiring on J-4, Pins 3
and 4 and J-8, Pins 3 and 4.
ATC-300+ Automatic
Transfer Switch Controller
NOTICE
POSSIBLE SOLUTION(S)
IM05805022K
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