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Cam No. 3 (28 and 28A) monitors the effective-
ness of the press braking system at the top of
the stroke. When cam No. 3 is positioned
according to Paragraph 2.3, deviations in
stopping position greater than
+
15” from top
dead center will be detected.
2.0 Installation
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!
Danger:
Prior to installation of the
Airflex’“’
Timing
Rotorseal and Cam Limit Switch, make sure
that the machinery is secured in a safe
manner. Failure to do so could result in
serious injury or possibly death.
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!
Warning:
Only qualified maintenance personnel should
install, adjust or repair these devices. Faulty
workmanship will result in unreasonable
exposure to hazardous conditions, injury or
severe damage to the equipment.
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!
Caution:
Before you begin any work, study this manual
so that you completely understand what is
required. Do not risk injury. Follow the
instructions.
2.1
Mounting
Instructions for mounting the
Airflex’)
timing
rotorseal, foot and shaft mounted cam limit
switches are given below. Any combination of
these times may be used in the control
system. Follow those instructions that pertain
to the timers being used.
2.1 .1 Timing Rotorseal:
The
Airflex@
timing rotorseal is custom
designed to fit the flywheel or bullgear of an
Airflex@
FSPA clutch and brake package as
shown in Figure 2. The flywheel or bullgear
All control systems, except those capable of
inch and continuous functions only, require
two timers. When two timers are used, except
on control panels with semicontinuous func-
tion, only the two piece cam No. 3 of the “A”
timer is required for brake monitoring. The
cam No. 3 of the “B” timer, is available for a
user’s special function such as a counter. The
optional one piece cam No. 3 profile is the
same as cam No. 4 shown in Figure 1.
LS4 is controlled by split cams 4 (33) and 5
(33A). This set of cams determines the top
stop setting and the amount of time the run
buttons must be depressed before the operator
can remove his hands from them. If the run
buttons are released before this predetermin-
ed setting, the press will stop.
The minimum dwell setting of these cams is
135”,
and they are fannable up to 255” in in-
crements of 40
‘.
For the proper setting of
these cams, refer to Paragraph 2.3.
Grease Hole
\
\
/-
Grease Fitting
Figure
2. Timing rotorseal mounting configuration
and Lockwasher
The timing rotorseal end plate (36) is used to
assemble the device to the crankshaft. The end
plate also provides the necessary bearing run-
ning clearance and must be properly shimmed.
Follow instructions given in Form PP3000.
Before mounting the timing rotorseal, check
to be sure its direction of rotation corresponds
with that of the flywheel or bullgear.
4