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

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The cable is to be taken up; or the cams and
limit switches are to be adjusted.
(c) If the car is not resting on the safety car
stop device, and' pressure fails to build up
in the system; the equipme~t 1s to be checked
in the same manner as for:pressure failure with
controls set for hoisting. (See par. 93.)
95. Stopping inaccurate.
(a) When operating with the controls set for a
TrServo ElectricalTr cont.r oLl.edccyc I'e; and the'
car fails to stop within one inch of the intended
stopping position the trouble will probably
be one of the f6116wihg rea§ons::
(1) The starting handle is held down when the
car is approaching the loading or the upper
unloading stations which will cause the hoist
to overtravel afid strike·the~buffers. !
This is improper' controlling of the
unit, by the operator,'~s the starting
handle is to be r eLeased as soon as the
car has moved a few inches.
. . -
(2) The hoisting cable has stretched in excess
of the two inches allowed for on the B-end
cams.
Adjust the cams or shorten the cable if
the cams have been d6welled'in pface.
(3) The limi t switches' are not properly adjusted.
Readjust the limit §witches.
(4) The brake improperly adjusted to hold the
load.
Readjust-brake.
(5 ) Brake band worn, oil soaked,
permit brake to slip.
~. "/
1.i
or glazed to
Check brake band. If worn or oily, remove
and clean, or install anew band.'
(b) During itServo MechanicalTr control or TrManual lt
control, the stopping will not be as accurate