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INSTALLATION (continued)
1 --- 2
Harnesses
The transfer switch is connected to the left side of the
controller by a plug-in harness (two plugs).
Engine Starting Contacts
The engine control contact connecti ons (if used) are
located on the transfer switch. Connect signal wires to
appropriate terminals as specified in Table A and shown
in Figure 1-2.
Table A. Engine Start Connections
When normal
source fails
Terminals on
transfer switch
contact closes TB14 and TB15
contact opens TB14 and TB16
TB 14
TB 15
TB 16
ENGINE STARTINGCONTACTS
(SHOWN DE–ENERGIZED )
TOP
STUD
MIDDLE
STUD
BOTTOM
STUD
14
15
16
TS
NR
NR
Figure 1-2. Engine starting contact label
and location on left side of transfer switch.
Auxiliary Circuits
Connec t auxiliar y circ u it wires to appropriate term inal s on
the transfer switc h. Note the control features that are
furnished on this switch. Make the necessary auxiliary
co nn ection s by referr ing to the Wiring Diagram .
Functional Test
The Functional Test consists of three checks:
S 1 — Manual Operation Test, on this page
S 2—VoltageChecks,page1–3
S 3 — Electrical Operation, page 1–4
Do these checks in the order presented
to avoid damaging the ATS.
Read all instructions on t he Wiring Diagram and labels
affixed to the automatic transfer switch. Note the
control features that are provided and review their
operation before proceeding.
1 – Manual Operation Test
A maintenance handle is provided on the Transfer Switch
for maintenanc e purposes only
. Manual operation of the
transfer switch should be checked before it is energized
(operated electrically).
Do not manually operate the transfer switch
until both power sources are disconnected:
open both circuit breakers.
1. After deenerg iz ing both power sourc es, open the
enclosure door. Locate and the maintenance handle
on the left side of the transfer switch. See Figure 1–3.
2. Grasp the attached maintenance handle and turn it
with thum b and fingers as shown to manuall y operate
it. The m aintenance handle turns the opposite
directionoftheweight.Turnitupordownasshown
to manual ly operate the transfer switc h. It sh ould
operate smoothly without any binding. If it does not,
check for shipping damage or construction debris.
3. R eturn the transfer switch to the Normal position.
Note: If Normal and Emergency connections are
reversed this operation is also reversed.
Now continue to 2–VoltageCheckson next page.
maintenance
handle
With ALL POWER OFF grasp
maintenance handle and turn it
quickly with your thumb and fingers.
weight marked N (normal)
and E (emergency)
floating
weight
weight
P osition of the tr ansf er switch i s i ndi cate d here
Figure 1–3. Maintenance handle and positions.