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INSTALLATION (continued)
1 --- 2
Tighten bolted joints to the torque specified in Table A.
The reliablility of the connection depends
on how clean and how tight the joint is.
Table A. Tightening torque values for bolted joints
(Grade 5 hardware)
Bol t Diameter
in inches
Tightening Torque
in foot pounds
1/4 7
5/16 12
3/8 20
1/2 50
5/8 95
3/4 155
Note: To temporarily disable engine control from
the automatic transfer switch you can unplug J3
from the small P3 receptacle at the bottom of the
assembly. BesuretoreconnectplugJ3totheP3
receptacle for automatic transfer switch operation.
Controller Ground
A grounding wire must be connected to the controller’s
lower left mounting stud. Because the controller is
mounted on the enclosure door, a conductive strap
must be used between the enclosure and the door. This
connection provides proper grounding which does not
rely upon the door hinges.
Harnesses
The transfer switch is connected to the left side of the
control pa n el by a plug-in harness (two plugs).
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 .
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 B and shown
in Figure 1–1.
Table B. Engine start connections
When normal
source fails
Terminal s on
transfer switch
contact closes TB1 and TB2
contact opens TB1 and TB3
engine start
connections
on
customer
terminal
block TB
Figure 1-1. Customer terminal block
on the top right side of enclosure.
Functional Test
The Functional Test consists of three checks:
S 1 — Manual Operation Test, page 1–3
S 2—VoltageChecks,page1–4
S 3 — Electrical Operation, page 1–5
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 ACTS. Note the control fea tures that are
provided and review their operation before proceeding.
Continue to 1–ManualOperationTest on next page.