Receiving, Handling And Storing; Inspection; Storing - Westinghouse De-ion DB-15 Instructions Manual

PART ONE

RECEIVING, HANDLING AND STORING

Type "DB" air circuit breakers, with all attach­
ments mounted in place, are shipped in wooden
crates or cardboard containers.
Important:
ers, do not use hooks in handling.
Net weights of Types DB-15 and DB-25 fixed
breakers are given in Table No. 1 below. Add 15
lbs. for drawout breakers.
closures on page 11. Add 25 lbs. for DBL.
Table No. 1. NET W
TYPE
Manual
Electric
Immediately upon receipt, examine the shipment
for any loss or damage incurred during transit. If
injury or rough handling is evident, file a damage
claim at once with the transportation company and
notify the nearest Westinghouse Sales Office.
When unpacking, be sure that no loose parts are
missing or left in the packing material. Report all
c
shortages at :ce. Blow out any dust or particles
of packing material that may have accumulated on
the circuit breaker parts. Remove tape from top of
'
arc chutes.
The "DB" breaker assembly consists of a coor­
dinated group of sub-assemblies mounted on a steel
supporting paneL (See Fig.l). The complete break­
er assembly is to be mounted with the steel panel
in a vertical position.
operation should, therefore, be made with the break­
er in this position. Final inspection should prefer­
ably be made with the breaker in its permanent
mounting.
Inspect the breaker as follows:
1. Raise and lower the trip bar by hand to make
sure that it does not bind.
Z. Rotate the manual operating handle slowly in
a clockwise direction to move the contacts toward
the closed position.
6
To avoid damage to the break­
Add 100 lbs. for en­
E IGHTS
08·15 DB-25
3-Pole 2-Pole
2-Pole
80 lbs.
60 lbs. 70 lbs.
75 lbs. 85 lbs. 100 lbs.

INSPECTION

All
inspections for proper
a. Observe whether all parts are in proper
alignment and move freely.
b. Make certain that the studs have not been
forced put of alignment.
c.
Be sure that the contacts are clean and
properly aligned. For a description of contact align­
ment, refer to "Contacts", page 12.
3.
If the contacts are in alignment and all parts
move freely, continue the clockwise rotation until
the breaker is latched.
4.
Operate the push to trip button to open the
contacts.
3-Pole
a. The toggle linkage should collapse and the
90 lbs.
moving contact assembly move freely to the full
110 lbs.
open position. This should be followed immediate­
ly by complete resetting of the links in the toggle
mechanism as the handle is returned to the open
position.
b. The links must always be free to move
without friction or binding.
5.
Check the attachments for operation in accord­
ance with the appropriate instructions as given
under "Maintenance", Part Three of this book.
6.
The latchplate felt and roller lever of the oper­
ating mechanism should be lubricated approxi­
mately every 10,000 operations. Molybdenum disul­
fide mixed with oil (Westinghouse M8577-ll) is
recommended.
H
circuit breakers are not to be installed in their
permanent location at once, they should be care­
fully inspected for loose or damaged parts and then
stored in a clean dry place in an upright position
to avoid damage to the circuit breaker parts.
covering of paper
the circuit breaker parts and is preferred to packing
or other materials that are apt to absorb moisture.
Breakers in non-ventilated enclosures should have
the cover opened or removed.
For safety reasons store the breakers in the open
position.

STORING

will
prevent dust from settling on
A