Cooper Lighting S260-75-1 - Manual (Page 16)

Before energizing the installation, an understanding of
the functions of the operating controls and indicating
lights is essential. (See Table 4 and Figure 14).
Initial Operation
To place the automatic transfer scheme into service, pro-
ceed as follows:
1. The switches on the front panel should be positioned
as follows:
A. S1 (MANUAL OPER. SOURCEI) — OFF
B. S2 (MANUAL OPER. SOURCE II) — OFF
C. S3 (OPERATlON SELECTOR) — MANUAL
D. S4 (SOURCE PREFERENCE AND RETURN
MODE) — set to the desired mode of operation.
E. S5 (CONTROL MODE) — NORMAL
2. Set the PREFERRED TO ALTERNATE TIMER and
ALTERNATE TO PREFERRED TIMER as required.
(See Time Delay section in this manual.)
3. Check that all installation connections are complete
as shown in the appropriate connection diagram
Figures 5 through 8.
4. Make sure both high-voltage transfer switches are open.
5. With all six fuses in place, energize both power
sources to the control.
A. SOURCE I ENERGIZED lamp should be on.
B. SOURCE II ENERGIZED lamp should be on.
C. SWITCH I OPEN lamp should be on.
D. SWITCH II OPEN lamp should be on.
6. Depending upon which source is the preferred
source, momentarily operate either S1 or S2 to the
CLOSE position. The appropriate switch will close to
energize the load and its status indicating lights will
transfer from OPEN to CLOSED.
7. Place the OPERATION SELECTOR SWITCH (S3) to
AUTO. The S control is in service. No further opera-
tion will occur until the preferred source voltage is lost.
Type S Automatic Load-Transfer Control Installation, Operation, and Maintenance Instructions
16
CAUTION: Equipment misoperation. Source I and
Source II high voltage switches can be paralleled in the
manual operation mode even if SOURCE PREFER-
ENCE switch, S4, is set for NP (non-parallel opera-
tion). Make sure both sources are in synchronism if a
manual parallel operation is to be performed. Failure to
comply can result in misoperation (unintended opera-
tion) and equipment damage.
T304.0
OPERATING INSTRUCTIONS
WARNING: Hazardous voltage. Never rely on
the open position of the operating handle or the
contact position indicator; it does not ensure that the
line is deenergized. Follow all locally approved safety
practices. Failure to comply can result in contact with
high voltage, which wil cause death or severe person-
al injury.
G123.1
!
DANGER: Hazardous voltage. Contact with haz-
ardous voltage will cause death or severe person-
al injury. Follow all locally approved safety procedures
when working around high and low voltage lines and
equipment.
G103.3
!