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INSTALLATION (continued)
1 --- 4
observe
these lights
Transfer Switch
Connected
To
Normal
Transfer Switch
Connected
To
Emergency
Normal
Source
Accepted
Emergency
Source
Accepted
Transfer
Control
Retransfer
Delay
Bypass
Transfer
Test
HOLDFOR
15SECONDS
RED
RED
GREEN
GREEN
(
)
operate
this switch
Figure 1-3. Standard controls and indicators.
2 – Electrical Operation
This procedure checks electrical operation of the ATS.
Be sure to close the 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
emer g enc y sourc es mu st be availabl e and the emergency
source generator (if used) must be capable of being
started ; put engine starting contr ol in autom atic position.
The Transfer Switch C onnected to Normal light and the
Nor m a l Source Accepted light should be on.
1. Turn the Isolation Handle counterclockwise to the
TEST position.
NOTE: Theenginegeneratormaybesignalled
to start while turning the Isolation Handle. If
emergency source is available, the ATS may
operate to the emergency positi on. If i t does,
operate Retransfer Delay Bypass switch.
2. Perform steps 1–5 at right. Observe the status lights.
Q Black square means light is on.
S White square means light is off.
3. Turn the Isolation Handle clockwise to the CONN
(connected) position.
4. Push in the Bypa ss Handle and t urn it counterclock-
wise to the OPEN position.
This completes the Functional Test of the ATB.
1
The Transfer Switch Connected
to Normal and Normal Source
Accepted lights should be on.
2
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.
3
Transfer switch will operate to
the Emergency position after
Feature2Btimedelay.The
Transfer Switch Connected To
Emergency light should come
on and Load Connected to
Normal light goes off.
4
Transfer switch will operate
back to Normal position after
Feature3Atimedelay.Forim-
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.
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.