IB140015EN
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Instructional Booklet
Effective: August 2014
Page
31
ATC-900 Magnum Tranfer Switch O & M Manual
5. Close the Source 1 bypass switching device manually. The
Source 1 bypass BLUE light will illuminate.
6. Inspect and/or perform the needed maintenance on the
Source 2 switching device.
7. Rack in the Source 2 switching device (see Section 6). The
Source 2 Switching device will automatically recharge when it
is in the Connect position. The source 2 isolated BLUE light
will no longer be illuminated.
Note:
Source 2 switching device will not be closed with Source 1 bypass
switching device closed due to mechanical interlock.
8. Reconnect J7 plug back onto the ATC-900 controller.
9. Open the Source 1 bypass switching device. The
Source 1 bypass BLUE light will no longer be illuminated.
10. The Source 2 switching device should now automatically
close and Source 2 position energized RED LED will be illumi-
nated.
11. Move the generator selector switch to the AUTO position.
12. The Source 2 switching device is now back in automatic oper-
ation.
13. Now re-program Preferred Source = Source 1 inside the ATC
controller.
14. With Source 1 available as a preferred source, Source 2
switching device should now open automatically close and
Source 1 switching device should close automatically. Source
2 position energized RED LED will no longer be illuminated and
Source 1 position energized GREEN LED will be illuminated.
7.4 Manual Operation When in Bypass Mode
7.4.1 Source 1 Bypass to Source 2 Bypass
When the transfer switch is set to Source 1 bypass, it can be
transferred to Source 2 bypass by the following sequence:
1. Move the generator selector switch to the RUN position.
2. Open the Source 1 bypass switching device. The Source 1
bypass RED light will no longer be illuminated.
3. Close the Source 2 bypass switching device manually and the
Source 2 bypass RED light will illuminate.
7.4.2 Source 2 Bypass to Source 1 Bypass
When the transfer switch is set to Source 2 bypass, it can be
transferred to the Source 1 bypass switching device by the follow-
ing sequence:
1. Open the Source 2 bypass switching device and the Source 2
bypass RED light will no longer be illuminated.
2. Close the Source 1 bypass switching device manually and the
Source 1 bypass RED light will illuminate.
3. Move the generator selector switch to the OFF or AUTO posi-
tion.
Section 8: Testing and Problem Solving
8.1 Testing
After transfer switch equipment is initially installed or during
planned outages, the installation should be tested to ensure that all
equipment operates properly. This attention to detail will help to
avoid unexpected malfunctions. Mechanical and/or electrical tests
should be performed.
The frequency of subsequent testing should be based on recom-
mendations of the generator set manufacturer. Use the test push-
button to check the electrical operation of the switch.
IF A TEST
SWITCH IS PROVIDED, ALWAYS RETURN THE SWITCH TO THE
AUTO POSITION AFTER THE TEST IS COMPLETE.
8.2 Problem Solving
A basic problem solving effort is the first step to take prior to call-
ing for assistance. Frequently, the effort will successfully address
most problems encountered. Most problem solving procedures
are outlined in the instruction manual unique to the type of logic
being used. In addition, several problem solving procedures are
presented here which are specific to the type of switches or
switching devices used in this equipment.
WARNING
HIGH VOLTAGES ASSOCIATED WITH OPERATIONAL TRANSFER
SWITCH EQUIPMENT PRESENT A SHOCK HAZARD THAT CAN
CAUSE SEVERE PERSONAL INJURY OR DEATH. USE EXTREME
CAUTION TO AVOID TOUCHING ELECTRICAL CONNECTIONS
WHENEVER INSPECTING OR TESTING THE EQUIPMENT.
IN ADDITION, IMPROPER OPERATION OF THE GENERATOR SET
PRESENTS A HAZARD THAT CAN CAUSE SEVERE PERSONAL
INJURY OR DEATH. OBSERVE ALL SAFETY PRECAUTIONS IN YOUR
GENERATOR SET OPERATIONS AND INSTALLATION MANUALS
WARNING
FOR MECHANICAL OPERATIONS, REFER TO SECTION 5. IN THIS
INSTRUCTION BOOK. REFER TO THE APPLICABLE LOGIC INSTRUC-
TION BOOK FOR ELECTRICAL TESTING
WARNING
HAZARDOUS VOLTAGES IN AND AROUND TRANSFER SWITCH
EQUIPMENT DURING THE PROBLEM SOLVING PROCESS CAN
CAUSE PERSONAL INJURY AND/OR DEATH. AVOID CONTACT
WITH ANY VOLTAGE SOURCE WHILE PROBLEM SOLVING.
WARNING
ONLY PROPERLY TRAINED PERSONNEL FAMILIAR WITH THE
TRANSFER SWITCH EQUIPMENT AND ITS ASSOCIATED EQUIP-
MENT SHOULD BE PERMITTED TO PERFORM THE PROBLEM SOLV-
ING FUNCTION. IF AN INDIVIDUAL DOES NOT FEEL QUALIFIED TO
PERFORM THE PROBLEM SOLVING FUNCTION, THE INDIVIDUAL
SHOULD NOT ATTEMPT TO PERFORM ANY OF THESE PROCE-
DURES.
