INSTALLATION (continued)
1 --- 3
Functional Test
The Functional Test consists of three checks: manual
operation, voltage checks, and electrical operation.
NOTICE
Do these checks in the order presented to avoid
damaging the automatic transfer switch.
Read all instructions on the 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 detachable maintenance handle is provided on the
fram e of the Tran sfer Switc h for maintenanc e purp ose
s
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 deenergizing both power sources, open the
enclosure door. Locate and remove the mainte-
nance handle from the clips on the left si de of the
transfer switch frame. Insert the handle into the
holeinthemoldedhubontheleftsideofthe
operator. See Figures 1–3 and 1–4 and Table B.
2. Move the m aintenanc e h andle up or down as shown
to m anually operate the transfer switch. It should
operate smoothly without any binding. If it does not,
check for shipping damage or construction debris.
Ta ble B. Maintenance handle positions.
A TS Position Handle Indicators
Normal
E
N
up
E=O
upper contactso pen
N=C
lowercontactsclosed
Emergency
E
N
down
E=C
upper contacts closed
N=O
lowercontacts open
maintenance
handle
left side of
transfer switch
storage clips
Figure1-3.Maintenancehandle&storagelocation.
3. Re tur n the transfer switch to the Norm al pos ition.
Ob s er v e that wind ow ind icator s (r ig h t side) sh ow th e
top shaft O (open) and the bottom shaft C (closed).
Note: If Normal and Emergency connections are
reversed this operation is also reversed.
4. Remove the maintenance handle and store it on the
frame (left side) in the clips provided.
NOTICE
Verify that the maintenance handl e has been
removed before proceeding!
Now continue to 2–VoltageCheckson next page.
handle
hub
UP closes the
Normal source
contacts (lower)
DOWN closes the
Emergency source
contacts (upper)
frame
window
indicators
O is open
C is closed
Emergency
contacts
Normal
contacts
contact position
indicators (right side)
Figure 1-4. Maintenance handle operation and contact position indicators.
