GE Industrial Solutions PowerVac PV-VL 13.8-1000-0 and -1 - Manual (Page 65)

GEH 6468A - Power/Vac VL Breaker Page 65
WARNING: BEFORE PROCEEDING WITH
THIS CHECK IT IS NECESSARY THAT THE
PRIMARY CIRCUITS BE DE-ENERGIZED.
2. When entering a breaker into a unit for
elevating, the spring discharge cam will discharge
the opening and closing springs if they are
energized.
WARNING: AGAIN, IT IS EMPHASIZED THAT
BEFORE PROCEEDING WITH THIS CHECK
IT IS NECESSARY THAT THE PRIMARY
CIRCUITS BE DE-ENERGIZED.
3. Elevate the breaker to the raised position and
electrically close the breaker. The positive interlock
should be checked to see that the removable
element is obstructed from being lowered from the
operating position.
4. Snap the selector switch to "LOWER" position
and pull the clutch handle forward. A definite stop
should be encountered preventing the motor circuit
limit switch from energizing the motor circuit and
lowering the breaker.
5. A minimum of 1/16" must be maintained
between the sliding clutch and the motor connector
when the positive interlock is blocked by the
breaker interlock roller. Trip the breaker manually
and lower the breaker to the fully lowered position.
The spring discharge cam will discharge the stored
energy springs when the breaker is withdrawn from
the unit.
CAUTION: IF THE INTERLOCK DOES NOT
FUNCTION AS INDICATED ABOVE, DO NOT
MAKE ADJUSTMENTS. CONTACT YOUR
LOCAL GE REPRESENTATIVE FOR
ADDITIONAL INFORMATION.
STATIONARY AUXILIARY SWITCH On units
equipped with stationary auxiliary switches, the
clearance between the end of the switch
mechanism operating rod and the operating
plunger on the circuit breaker should be 0 to .125"
with the circuit breaker in the raised and open
position.
Any adjustment in this dimension must be made
on
the auxiliary switch setting. Care should be taken
to prevent destroying interchangability of the circuit
breaker by excessive adjustment.
SPRING DISCHARGE CAM The spring dis-
charge cam is mounted on the left hand side of the
unit and operates in conjunction with a spring
discharge interlock on the breaker.
When entering a breaker into a unit, to elevate to
the operating position, the spring discharge cam
will hold the breaker interlock trip free and the
closing spring discharged until the breaker is .25"
off the floor rails. At this point the positive interlock
is blocking the spring charging and closing circuit
open.
When lowering the breaker from the operating
position the breaker must be open before the
elevating mechanism can be operated. While the
breaker is being lowered the springs are still
charged but the positive interlock blocks the
breaker from closing.
If after test operations the breaker is left closed
and/or its closing spring charged, it will be
automatically tripped and held trip free while the
springs are discharged when it is reinserted in.
SPACE HEATERS Space heaters are pro-
vided in all equipment in order to keep the inside
temperature several degrees higher than that
outside. By maintaining a slight temperature
differential, the heaters help facilitate drying and
prevent condensation and the resulting corrosion
and insulation deterioration which might occur.
Before energizing the heaters, be sure the power
source is of the proper voltage, frequency, and
phase arrangement, and is connected in
accordance with the wiring diagrams furnished with
the equipment. Also, be sure to remove all cartons
and miscellaneous material packed inside the unit
before energizing the heaters.
Heaters should be visually inspected several times
a year to assure they are operating properly. It is
also recommended that the heaters be energized
at all times and that thermostatic control NOT be
used.