Emerson 7ADTB - Manual (Page 6)

INSTALLATION (continued)
1---4
RED
RED GREEN
GREEN
observe
these lights
AMBER
operate
this switch
Figure 1-3. Standard controls and indicators.
2 – Electrical Operation
This procedure checks electrical operation of the ADTS.
Close enclosure door before proceeding to prevent
personal injury in case of electrical system fault.
Transfer Test
The ATS should still be bypassed. Both normal and
emergency sources must be available and the emergency
source generator (if used) must be capable of being
started; put engine starting control in automatic position.
The Transfer Switch Connected to Normal light and the
Normal Source Accepted light should be on.
1. Turn the Isolation Handle counterclockwise to the
TEST position.
NOTE: The engine generator may be signalled to start while
turning the Isolation Handle. If emergency source is available,
the ATS may operate to the emergency position. If it does,
operate Retransfer Delay Bypass switch.
2. Perform steps 1–5 at right. Observe the status lights.
See Figure 1–3.
■ Black square means light is on.
❐ White square means light is off.
3. Turn the Isolation Handle clockwise to the CONN
(connected) position.
4. Turn Bypass Handle clockwise to the OPEN position.
This completes the Functional Test of the 7ADTB.
1
Turn and hold Transfer Control
switch clockwise to Transfer
Test until the engine starts
and runs (within 15 sec.). The
Emergency Source Accepted
light should come on.
Load
Disconnect
Active
2
Transfer switch CN opens and
the Transfer Switch Connected
to Normal light should go off
and the Load Disconnect Active
light should come on. Both CN
& CE contacts are now open.
Load
Disconnect
Active
3
After the delay transition time
delay, the CE Transfer switch
will operate to the Emergency
position. The Transfer Switch
Connected To Emergency light
should come on and Load Dis-
connect Active light goes off.
Load
Disconnect
Active
4
Transfer switch will operate
back to Normal position after
Feature 3A time delay. For im-
mediate retransfer turn Transfer
Control counterclockwise to
Retransfer Delay Bypass. The
Transfer Switch Connected To
Normal light should come on;
Transfer Switch Connected to
Emergency light should go off.
Load
Disconnect
Active
5
The engine–generator will stop
after the Feature 2E time delay
(unloaded running engine cool-
down). The Emergency Source
Accepted light should go off.
Load
Disconnect
Active