Advertisement
4. Handle Adjustment
Note: Additional handle adjustment information can be
found in section 11
Recommended Tools:
2 – 5/16 in. socket wrenches for adjusting unit handle
4.1. Perform all disconnect operating handle adjustments
with the unit removed from the motor control center or in
the "Test" position (See Figure 6a).
4.2. The adjustable link rod can adjust to increase or de
crease its overall length by rotating the sleeve. By rotat-
ing the sleeve clockwise the length is increased and by
rotating it counterclockwise the length is decreased.
A hex nut is provided as part of the adjustable link rod
and is tightened against the sleeve to prevent it from
going out of adjustment. The hex nut must be loose
and sufficiently away from the sleeve to allow it to
rotate during the adjustment of the handle.
Note: Always use two wrenches when loosening,
adjusting, or tightening the adjustable link rod.
One wrench adjusts the hex sleeve while the second
wrench holds the hex nut.
4.3. The handle assembly must be adjusted to perform the
following functions:
4.4. Unit must turn ON; Unit must turn OFF; Unit must indi-
cate TRIP; Unit must RESET.
4.5. Operate the handle from the ON position to the OFF
position and disconnect will turn OFF.
Figure 7 - Operating Handle Adjustment
Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092
E87010-A0401-T002-A5-MCC
4.6. Return the handle to the ON position and the dis-
connect will turn ON. If it does not, rotate the sleeve
slightly clockwise and try again. Repeat this step until
the handle assembly turns the unit ON. Then, repeat
step 4.5. Note: To perform this operation with the door
open it will be necessary to push down on the exposed
interlock arm lever.
For Circuit Breaker Units Only
4.7. Trip the circuit breaker and the handle should move to
a position between the ON and OFF positions. (Most
circuit breakers can be manually tripped by pressing a
red or black button on the front of the device).
4.8. Move the handle down past the OFF position to reset
the circuit breaker. If the circuit breaker resets and
can be returned to the ON position by the handle, the
adjustment has been completed and the hex nut
should be tightened against the sleeve. If the circuit
breaker does not reset, turn the sleeve counterclock
wise slightly and try again. Repeat this step until the
breaker resets. Then repeat steps 4.5 – 4.8 to verify
operation.
tiastar
Motor Control Center
TM
Page 6 of 12
A5E33045207A
Advertisement
