Liebert 100-1000A User Manual
Operating Instructions for the Touch Screen Interface
69
10.4.1 Bypass Procedures for Source 1
To bypass the switch for Source 1:
1. Verify that Source 1 is supplying power via the Mimic.
• If the Color Graphical Display is not available, check the gate driver board LEDs through the
slots in the control panel. See Figure 47.
2. Remove the interlock key from CB5 and place it in the CB4 interlock.
3. Open the alternate source input breaker CB2.
4. Rotate and remove the CB2 interlock key.
5. Insert the key in the CB4 bypass breaker interlock.
6. Rotate the interlock keys in the CB4 bypass breaker interlock to retract the interlock.
7. Close bypass breaker CB4.
8. Verify the breaker status on the Mimic screen.
9. Open source input breaker CB1.
10. Rotate the CB1 interlock key and remove it to lock out the breaker.
11. Secure the key according to your site’s lockout/tagout procedure.
12. Open output breakers CB3 and CB3A (if supplied) to remove power and isolate the static switch
3. Open the alternate source input breaker CB2.
4. Rotate and remove the CB2 interlock key.
5. Insert the key in the CB4 bypass breaker interlock.
6. Rotate the interlock keys in the CB4 bypass breaker interlock to retract the interlock.
7. Close bypass breaker CB4.
8. Verify the breaker status on the Mimic screen.
9. Open source input breaker CB1.
10. Rotate the CB1 interlock key and remove it to lock out the breaker.
11. Secure the key according to your site’s lockout/tagout procedure.
12. Open output breakers CB3 and CB3A (if supplied) to remove power and isolate the static switch
from the load.
To return to normal mode:
1. Insert the key in the CB1 breaker interlock.
2. Rotate the key to retract the interlock.
3. Close source input breaker CB1.
4. Verify Source 1 and CB1 breaker status on the Mimic screen.
5. Select the SOURCE 1 button in the SOURCE XFERS menu.
6. Close output breakers CB3 and CB3A (if supplied).
7. Verify CB3 and CB3A breaker status.
8. Verify that STS SOURCE 1 and OUTPUT boxes are highlighted on the Mimic screen.
9. Open bypass breaker CB4.
10. Rotate the keys in the CB4 interlock to extend the interlock.
11. Remove the proper key from the CB4 interlock and insert it in the CB2 breaker interlock.
12. Rotate the key to retract the CB2 breaker interlock.
13. Close source input breaker CB2.
14. Verify the STS SOURCE 2 box and CB2 breaker status on the Mimic screen.
1. Insert the key in the CB1 breaker interlock.
2. Rotate the key to retract the interlock.
3. Close source input breaker CB1.
4. Verify Source 1 and CB1 breaker status on the Mimic screen.
5. Select the SOURCE 1 button in the SOURCE XFERS menu.
6. Close output breakers CB3 and CB3A (if supplied).
7. Verify CB3 and CB3A breaker status.
8. Verify that STS SOURCE 1 and OUTPUT boxes are highlighted on the Mimic screen.
9. Open bypass breaker CB4.
10. Rotate the keys in the CB4 interlock to extend the interlock.
11. Remove the proper key from the CB4 interlock and insert it in the CB2 breaker interlock.
12. Rotate the key to retract the CB2 breaker interlock.
13. Close source input breaker CB2.
14. Verify the STS SOURCE 2 box and CB2 breaker status on the Mimic screen.
• If the Color Graphical Display is not available, check the gate driver board LEDs through the
slots in the control panel. See Figure 47.
NOTE
To bypass the Source 1 static transfer switch when Source 2 is presently active, you must first
To bypass the Source 1 static transfer switch when Source 2 is presently active, you must first
transfer to Source 1. See Manual Transfer / Preferred Source Selection on page 66.