Eaton ATC-900 - Adjustments

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Instruction Booklet
Effective: October 2014 Page 23
O&M Manual for 40-1200A (480/600 Vac) ATC-900 3-Position,
Open/Closed Transition Contactor Based Transfer Switch
6.2.1 Transfer Switch Appears Inoperative (Manual
Operation)
Step 1: Initially verify that there is no voltage on any source
(Source 1 or Source 2) inside the transfer switch.
Step 2: D
epress the "TRIP" button located on the operating
mec
hanism of the contactor to bring the contactor to
neutral (trip) position.
Step 3: Attac
h the
handle to the manual lever (see Figure 16)
and rotate the lever up to go to Source 1.
Step 4: D
epress the "TRIP" button located on the operating
mec
hanism of the contactor to bring the contactor to
neutral (trip) position.
Step 5: D
epress the "SELECT" button located on the operating
mec
hanism of the contactor and rotate the lever up
keeping the "SELECT" button depressed to go to
Source-2.
Following above steps, if the transfer switch does not transfer
between two sources, contact factory personne
l
MANUAL
HANDLE
OPERATING
SELECT BUTTON
TRIP BUTTON
Figure 16. Troubleshooting Manual Operation of the Transfer
Switch.
WARNING
HAZARDOUS VOLTAGES IN AND AROUND ATS EQUIPMENT DUR-
ING THE PROBLEM SOLVING PROCESS CAN CAUSE SEVERE PER-
SONAL INJURY AND/OR DEATH. AVOID CONTACT W
ITH ANY
VOLTAGE SOURCE WHILE PROBLEM SOLVING.
Section 7: Adjustments
7.1 General
No Adjustments are required.