Westinghouse RC, Инструкция по эксплуатации

Страница: 28 / 114

TYP E RC AUTOMATIC R ECLOSI NG R ELAY
The following checks may be perfonned to deter­
mine if the relay, as received from the factory , is in
serviceable condition.
Energize the X, Y and motor coils with 50% of the
above ac ratings (or 80% of de rating) or at lo wer
ratings by bypassing the coil resistor or resistors.
Energize the
Z
coil at 80o/c of pickup. See that X
and Y pick
up
po sitively and that proper contact
action is obtained. The correct adjustment of the X
unit is as follows: Set the distance from the front
end of the armature mold to the metal yoke to 1/2
inch.
Set the XB contact gap at 3/64 " and the X9
gap at 3/32". With the above adjustment X9 should
have a minimum of 1/32" contact follow . Y unit
contact action is detailed under •construction . "
Determine the time required for one drum revolu­
tion. The time in seconds should correspond to the
drum speed dial marking ± 3 . 5%. Observe drum cam
action during this interval or by m anually rotating the
drum with the push rod depressed .
R o uti ne Ma i nte n a n ce
All contacts should be periodically cleaned with
a fine file. A contact burnis her S#182A836H01 is
recommended for this purpose. The use of abrasive
material for cleaning contacts is not recommended,
because of the danger of embedding small particles
1 2
in the face of the soft silver and thus impairing the
contact.
Motor Lubrication
The motor bearing contains a supply of special
lubricant sufficient for from three to five years serv­
ice. This lubricant does not congeal at low tempera­
tures and permits satisfactory operation of the motor
at ambient temperatures of 30° F to -40° F, such as
sometimes may occur in outdoor installations . This
oil is available in 1 oz. bottles as S#17236 39.
To lubricate the motor, withdraw the drum speed
dial assembly after removing the clamping screw and
the black screws. Then, gently work the motor and
gear as sembly loose from the rear chassis mounting
plate and lower it under the front chassis mounting
plate. (When used, the
Z
unit must be removed). Re­
move the gear plate of the motor and gear as sembly
and, then, the knurled oil cap. Saturate the wool with
S#1723639 oil. Reas sem ble.
R E N E W A L P A R T S
Repair work can be done most satisfactorily at
the factozy . However, interchangeable parts can be
furnished to the customers who are equipped for doing
repair work. When orde�ing parts, always give the
complete nameplate date.
www
. ElectricalPartManuals
. com