9
Instruction Leaflet
IL29C203J
Installation Instructions for Motor Operator for
L-Frame and MDL-Frame Circuit Breakers and
Molded Case Switches
EATON CORPORATION
www.eaton.com
4-0 ADJUSTMENT
The following procedures describe the adjustment of the
motor operator limit switches if necessary:
The motor operator has been adjusted at the facto-
ry. Before attempting to adjust the motor operator,
verify that a 1 Kva power source is being used and
that all installation instructions above been fol-
lowed. Verify that the circuit breaker can be operat-
ed without the motor operator. Under standard con-
adjustment.
Two limit switches control the travel of the motor opera-
tor carriage. The upper switches control the travel of
the motor operator carriage. The upper switch de-ener-
gizes the motor operator when the carriage has moved
4-1. Disconnect the motor operator from the supply
voltage.
4-2. Remove the cover screws and the motor operator
cover.
TAPE
SHOULD BE REMOVED BEFORE
REINSTALLING THE COVER.
4-4. For upper limit switch adjustment, loosen the two
pan head screws securing the upper switch assembly.
Move the switch up to increase the carriage travel.
Move the switch down to decrease the carriage travel.
After adjusting, tighten the screws.
4-5. For lower limit switch adjustment, loosen the two
pan head screws securing the lower limit switch assem-
bly. Move the switch down to increase the carriage
travel. Move the switch up to decrease the carriage
travel. After adjusting, tighten the screws.
NOTICE
!
CAUTION
Figure 4-1 Motor Operator Limit Switch Locations
LINE
Upper
Limit
Switch
Limit
Switch
Adjustment
Screws
Power-
OFF
Switch
Lower
Limit
Switch
LOAD
!
!
WARNING
4.3. Use a small piece of tape (customer supplied) to
keep the lever arm depressed on the "POWER-OFF"
switch to allow testing and adjusting of limit switches.
4-6. Replace the motor operator cover and cover
screws.
4-7. Reconnect the motor operator to the supply volt-
age.
CAUTION
MOVE FREELY BEFORE REINSTALLING COVER.
BEFORE MOUNTING A MOTOR OPERATOR ON A
CIRCUIT BREAKER INSTALLED IN AN ELECTRICAL
SYSTEM, MAKE SURE THE CIRCUIT BREAKER IS
SWITCHED TO THE OFF POSITION AND THAT
THERE IS NO VOLTAGE PRESENT WHERE WORK
IS TO BE PERFORMED. SPECIAL ATTENTION
SHOULD BE PAID TO REVERSE FEED APPLICA-
TIONS TO ENSURE NO VOLTAGE IS PRESENT.
THE VOLTAGES IN ENERGIZED EQUIPMENT CAN
CAUSE INJURY OR DEATH.
ENERGIZING THE MOTOR OPERATOR WHEN IT IS
NOT MOUNTED TO A CIRCUIT BREAKER MAY
DAMAGE IT. ENSURE THAT THE MOTOR OPERA-
TOR IS SECURELY MOUNTED TO A CIRCUIT
BREAKER BEFORE OPERATING ELECTRICALLY.
REMOVE TAPE TO ALLOW SWITCH LEVER TO
