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2.1.2.
To
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
mount the timing rotorseal:
Make sure that the air tube “O” rings (2)
are in place.
Install the plastic insert (37A) in the head
of the drive screw (37).
Install drive screw. Tighten the screw, being
careful not to distort the end plate (36).
Tie-wire the drive screw to the end plate
mounting screws.
Align the tang of shaft (6) with the slot in
the drive screw insert, and align the
grease holes in the adapter (1) with those
in the hub of the flywheel or bullgear.
Install the lockwashers and mounting
bolts. Tighten the mounting bolts uniform-
ly SO the adapter flange fits squarely
against the register face.
Inspect all air connection tubes and
remove all burrs.
Lightly grease or oil the ends of the air
tubes and insert them into the mating
adapter holes.
Attach the opposite ends of the tubes to
their connections.
Connect flexible air hose (35) to the
center section and air supply line.
A
!
Caution:
Do not use a rigid pipe air line in place of the
flexible air hose (35). Rigid pipe does not
allow compensation for any eccentricity be-
tween the device and the shaft and will cause
a preload condition that will shorten the bear-
ing life of the device.
k)
Apply air pressure and check for air leaks.
Repair as required.
l)
Remove air pressure.
m)
Refer to appropriate paragraph and mount
second timer.
Wiring instructions are given in Paragraph 2.2.
Foot Mounted Cam Limit Switch:
The foot mounted cam limit switch must be
chain driven by the crankshaft. The sprocket
ratio between the shaft and switch must be
1:1. Sprockets furnished by
Airflex”
are 3/8
in. pitch. Chain of proper length, determined
by the placement of the timer, and the chain
guard must be furnished by customer.
Mount the timer as follows:
a)
Select a convenient mounting area for the
timer so that there is no interference with
the chain drive. Locate the timer as close
as possible to the driving shaft so that
the chain length is held to a minimum.
b)
c)
d)
e)
f)
g)
h)
Rigidly attach a sprocket to the drivi
/i
g
shaft.
Key the other sprocket to the cam limit
switch shaft and lock it in position with
set screws and jam screws. The cam limit
switch shaft diameter is .6250/.6245
inches, has a 3/16 inch square keyway
and has a one inch long mounting length.
Fabricate a sturdy bracket or prepare the
machine surface for mounting. Bear in
mind that the bracket design or positioning
of the switch will be influenced by the
direction of rotation of the switch.
Position the switch so that the driving
and driven sprockets are in alignment.
Fasten the switch to its support with four
3/8 inch cap screws and lockwashers.
Attach and tension the drive chain
following chain manufacturer’s
recommendations.
Fabricate a guard to cover sprockets and
chain.
Refer to appropriate paragraph and mount
second timer.
Wiring instructions are given in Paragraph 2.2.
2.1.3 Shaft Mounted Cam Limit Switch:
The shaft mounted cam limit switch is design-
ed for attaching directly to a shaft end. The
shaft end must be machined as shown in
Figure 3 to accept the shaft pilot and bolt
circle.
3. 250
Dia B. C.
Cam Limit
Swtch
@ A
.OlO
Dia.
“i
3’5
PI/Of
Da.
Y
,376
1.25 Deep
56
I-
318-16
NC-2
4 Bolts
Eq.
Spaced
Figure 3. Shaft machining details