Operating instructions

26 Operating Instructions
2.5 Operating Guidelines
After the initial equipment start-up, the following operating guidelines can be used for standard
equipment operation. These guidelines should be reviewed for any special equipment modifica-
tions, special site conditions, or company policies that may require changes to the standard equip-
ment operation.
2.5.1 Normal System Turn-On
Make certain all Static Switch Breakers (CB1, CB2, CB3, CB4, and CB5) are in the OFF position
and the key interlocks for CB1 and CB2 have their bolts retracted and keys captive. The key inter-
locks for CB4 and CB5 should have their bolts extended, thus preventing CB4 or CB5 from being
turned ON. Building power should be applied to both static switch inputs. The LCD control panel
should be active and operate properly when at least one of the inputs is energized. Verify nominal
input voltages are applied to both inputs (Source 1 and Source 2). The input voltages, selected pre-
ferred source, breaker and switch status, and alarms are indicated on the Monitor/Mimic screen.
Close CB1. Verify that Source 1 voltages are nominal and CB1 breaker status is correctly indi-
cated on the Monitor/Mimic screen.
Close CB2. Verify that Source 2 voltages are nominal and CB2 breaker status is correctly indi-
cated on the Monitor/Mimic screen.
Verify that the preferred source static switch box is highlighted on the Monitor/Mimic screen,
indicating which static switch (STS1 or STS2) is On.
Close Output Breaker CB3. Verify CB3, the Output box, and the Load box are highlighted, indi-
cating that CB3 is closed and the Output and Load are energized.
Press the Alarm Reset push-button switch to reset previous alarms. Verify on the Monitor/Mimic
screen that there are no active alarms. If any active alarms are displayed, refer to 2.6 - Alarm
Messages for a description of the alarms and possible causes. All active alarm conditions should
be corrected before proceeding.
Turn on the load equipment following the load equipment manufacturer’s recommendations. In
some applications, the static switch supplies a Precision Power Center, in which case, the normal
turn-on sequence for the Precision Power Center should be followed.
It is recommended that the LCD be left with the Monitor/Mimic screen displayed to readily see
the status of the switch and any active alarms.
2.5.2 Manual Transfer / Preferred Source Selection
From Master Menu screen on the operator control panel, select the Source Transfer screen. The
source voltages, frequencies, and synchronization values are displayed on the Source Transfer
screen, along with the transfer instructions.
Verify that the input breakers CB1 and CB2 are closed and that Source 1 and Source 2 input volt-
ages are correct and within the synchronization window.
The Source Transfer screen displays the present input source (e.g., On Source 1), which source is
preferred (e.g., Source 1 Is Preferred), and if manual transfer is permitted or prohibited. If the
Okay To Transfer message is displayed and it is desired to transfer to the alternate source, simul-
taneously press the Alarm Reset and either Up or Down switches. Use the Down switch when
transfer to Source 2 is desired and the Up switch when transfer to Source 1 is desired.
When conditions are correct, the switch will transfer to the alternate source by selecting the alter-
nate source as the preferred source. Verify that the alternate source is designated as the preferred
source and that the input source changes to the desired source (as indicated by the On Source 1 or
On Source 2 message.
If the Transfer Prohibit message is displayed, check for alarm messages on the Present Status
screen. Correct alarm conditions before attempting a source transfer.
NOTE
When the remote source selection option (Remote Control) is activated, the
change of state of customer alarm inputs #1 and #2 (Remote Preferred
Source Selection) will override the manual transfer selection when the
source transfer screen is exited.