Siemens RL Instructions

MAINTENANCE
Page 16
Position 2. Springs Charging; Motor Not Yet Cutoff.
+ +
1--../2
1
Position 3. Springs Charged; Motor Stopped.
4
1---'2
NOTE In position 3 there is clearance between both
levers and the switch actuating leaf. Clearance
may be minimal (approx. 1/64) or up to 1/16
inch (0.4-1.6mm). It is important to completely
remove pressure from the switch actuating
leaf to be sure that the switches are free to
actuate. Adjustment is made by carefully
bending lhe levers as indicated by arrows
(Items 1 and 2). Do not bend the switch actuat-
ing leaf.
,:-!+'"1.$:: .. :~.;;:::0:,.
,; , . " .. . If the motor cutoff switch (3) does not
:-.-.::.:.:..:.:=: .. ::..: .... -.: .:,.-:-:•:•:•.•!•,.· . •
·· open, the motor will continue to run and
the cam follower (82, Figure 1) will re-
engage
wind and close cam (34, Figure
1)
jamming the entire mechanism, pos-
sibly stripping gears in the gear motor,
blowing the control fuse, or damaging
the motor. To free a jammed mechanism
it is necessary to remove the gear motor.
While the springs are charging the motor/gear position
lever (2) moves forward applying pressure to the switch
actuating leaf. The spring position lever (1) retracts as the
springs reach full charge. The
motor cutoff switch (3) is
closed and the motor is running.
The springs have reached charged position. The motor/- f'
gear lever (2) has been retracted by roll pins on the large
gear
as the cam follower (82, Figure 1) on the large spur
gear has disengaged from the wind and close cam (34,
Figure 1). The
motor cutoff switch (3) has opened, stop-
ping the motor, and the closing coil switch (4) has closed.
Upon application of power to the closing circuit the
breaker will close. Switches then return to No. 1 position.
:ama:The springs will discharge and the
breaker close when the gear motor pin-
ion is disengaged from the spur gear.
Use the manual charging mechanism or
the maintenance closing device to pre-
vent this from happening. Move the man-
ual handle towards the charge position,
applying force to the closing springs,
and
allow the ratchet on the charging
cam to support load while the motor is
removed. This prevents the closing
springs from discharging when the
motor is removed.
•
.•
Courtesy of NationalSwitchgear.com

Siemens RL Specifications

General

Rated Voltage	250VAC, 30VDC
Mechanical Life	10, 000, 000 operations
Operating Temperature Range	-40°C to +70°C
Contact Configuration	SPDT
Contact Rating	10A
Electrical Life	100, 000 operations
Mounting Type	PCB