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Installation Manual 381333-445
ASCO 4ATE, 4ACTE, 4ADTE, 4NTE, 4NCTE, 4NDTE
381333-445 B
ASCO Power Technologies
Page 17
Testing & Service
Maintenance Handle
1.
Bypass, isolate, and withdraw the transfer switch (pages 7-
11). Then locate and remove the maintenance handle from
the storage location (inside lower left side). Insert the
handle into the hole in the molded hub on the left side of
the operator of the transfer switch. See Figures 33, 34, 35
and Table C.
2.
Move the maintenance handle up or down as shown to
manually operate the transfer switch. Operate both upper
and lower contact shafts. Observe the window indicators
(right side). Remove the maintenance handle and store it
on the lower left side.
NOTE
If Normal and Emergency connections are
reversed, this operation is also reversed
.
Figure 34. Maintenance Handle operation for Emergency source contacts (upper shaft)
Figure 33. Contact position indicators
Figure 35. Maintenance Handle operation for Normal sou