Instantaneous Unit; Target And Seal-In Unit - GE IAC Series Instruction Booklet

Adjust the
possib l e to 1 .31 seconds, but at l east between 1.24 and 1.38 seconds.
The magnet shou l d be approximately in the mid d l e o f its travel.
magnet is adjusted
Moving the magnet
increases the t i me.
When adjusting
magnet never extends out beyond the cutout in the disk.
screw clamping
be f ore proceeding with other time checks.
does not hit the counterweight at any position o f the disk.
With the tap p lug in the 2amp tap and the time dial at the No.
time setting, check
These c l osing times must be within the limits shown on Tabl e XV.
TAP AMPS
2.0 4.0
2.0 20.0

INSTANTANEOUS UNIT

1. Both contacts shoul d close at the same time.
2. The backing strip shou l d be so f ormed that the f orked end
bears against the mo l ded strip under the armature.
3. With the armature against the pole piece, the cross member o f the
"T"
spring should
least l/32 inch wipe on the contacts.
0.0 12 inch feeler gage between the f ront hal f o f the shade d p o l e
and the armature,
should close with the fee ler gage in place.

TARGET AND SEAL-IN UNIT

Check steps 1 and 2 as described under INSTANTANEOUS UNIT above.
To check the wipe of the seal-in unit,
gage between the plastic residual o f the armature and the p o l e
w i t h the armature he ld
feeler gage in place.
GEK-34054
drag magnet to
by l oosening
in decreases
the drag magnet,
the drag magnet
contact c losing
TABLE XV
60HZ
MIN .SEC.
6.70
0.67
be
in a hor izontal
with the
closed.
obtain a c losing
the nut under
the time. Moving
be sure the
to its supporting
Make sure the drag magnet
at 2 and 10
MAX. SEC. MIN. SEC.
7. 71 6.94
0.77 0.65
plane and there shou l d be at
Check this by inserting a
armature he l d closed.
insert a 0.01 2 inch f ee l er
The contacts shoul d
1 8
time as near as
The
the magnet she l f.
the magnet out
outer edge o f the
Be sure the
she l f is tight
times tap v a l ue.
50HZ
MAX. SEC.
7.98
0.75
( front )
T h e contacts
piece
close with the
5