OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

267
noid IIBI!however is not de-energized by the
opening of this switch due to the circuit arrangement
of switch #10.
Swi t c ti #10. - This switch functions as a IIcutout"
switch for the starting lever interlock
circui t. It is a normally open switch which
is closed by the car while the car is at the
upper unloading station. Thus as switch liCIT
opens, switch #10 is closed and the solenoid
plunger does not move to lock the lever.
The "cut-ccut." thus permits operation of the
car from the upper unloading station to the
lower unloading station with the door open.
It prevents starting the hoist to move the car
away from the lower unloading station until
the door is closed and dogged.
Note: The preceding circuit (designated llQCII)
comprises only the four units described. It
has no mechanical, electrical or functional
interconnection with the circui t that embraces
switches numbers 4, 5, 6, 7, 8, 9 and solenoid
#1.
Hoist Controls
33. The hoist control arrangements located at the hoist
operator's station (at the upper end immediately in the rear
of the trunk) include an installation of three levers. These
are designated the starting lever, the control lever, and the
selector control lever . Their general arrangements mechanically
are as indicated in the subparagraphs below and as shown on
drawings number 230762, 233133, 234060, 234062, right hoist,
and 233134, 233135, 234063, left and center hoists. Full details
as to their control functions are described in the text
on the power unit, paragraphs 49 to 69 inclusive.
(a) Star t ing Zever. - The starting lever is bracket
mounted on the rear of the trunk rear plate.
It is connected to operate a safety release
valve and one ofa series of starting circuit
switches (designated #6). It is interlocked
with the lower door and the upper door dog
locking latch through a solenoid operated detent.
The circuit in which this solenoid is
arranged with switches at the lower door and at