m)Retighten the jam nuts (30) and repeat Steps “f”, “g” and “h”.

n)Repeat this procedure as necessary to ob- tain the desired stopping position.

2.3.2 Long Operation:

This feature is provided so an adjustment can be made to extend the LS4 open time and accommodate presses with long strokes and/or slow crankshaft speeds.

a)Turn electrical power off to main control panel.

b)Remove end cap (31) from timer by remov- ing the two socket head cap screws.

c)Remove jam nuts (30) and washer (40).

d)Remove adjusting knob (29).

e)Note that cam No. 5 (33A) has four dowel holes for adjustment. Cams are factory adjusted to a minimum setting of 135”. Rotate cam No. 5 (33A) to increase or decrease cam dwell.

f)Insert the dowel of the adjusting knob through cam No. 5 (33A), cam No. 4 (33) and spacer (41) to engage cam No. 3 insert (28). Proper engagement can be determined by rotating the cam adjusting knob. All cams, except cam No. 3 (28A), will turn as a unit when the knob is rotated.

g)Adjust top stop position and brake monitor- ing cam as outlined in Paragraph 2.3.1.

2.3.3Timer Synchronizing Instructions:

a)First, refer to Paragraph 2.3, Timer Ad- justments. Where two Airflex@ timers exist, this section applies to both units.

b)Set stroking selector on control panel to “inch”, turn power “ON”, and inch press

to top of stoke. With electrical power “OFF”, remove both timer end caps. Make sure the machinery is secured in a safe manner.

c)On each timer, loosen the locknuts (30) and rotate the cam assemblies,, so that the leading edge of the lobe on both cam No. 4 and 5 (33 and 33A) just start to open the LS4 breaker points. Tighten locknuts (30). Also, refer to brake monitoring cam adjustment at this point, when applicable (see Paragraph 2.3.1 and Figure 4).

d)Set the control panel stroking selector to. ‘Single Stroke”, operate the press, and observe the stopping position. Retard or advance both cam assemblies, as required, to establish desired top stop position. Tighten locknuts.

e)With “top stop” established, it is likely at this stage of adjustment that one cam’ No. 4 of one timer may slightly lead the cam No. 4 of the second timer.

f)Inch the press through the stroke just far enough for the lobe of the leading cam to barely contact the fiber cam follower on the breaker point.

g)With power “OFF”, adjust the second cam assembly to an identical setting. Tighten locknuts.

h)Run the press again on “Single Stroke” a few times to verify proper operation and stopping position.

i)With power “OFF”, replace the felt seal (34), the timer end caps and socket screws.

j)The two timers should now be properly synchronized, and the press ready for operation.

3.0 Maintenance

n! Danger:

Prior to performing any maintenance, repair or adjustment on the Airflex@ Timing Rotorseal and Cam Limit Switch, make sure that the machinery will remain secured in a safe manner. Failure to do so could result in serious injury or possibly death.

n! 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.

n! Caution:

Before you begin any work, study this manual so that you completely understand what is required. Do not risk injury. Follow the instructions.

3.1Breaker Point Assemblies:

The breaker points furnished with the Airflex@ timers have silver alloy contacts. Standard automotive breaker points have tungsten contacts and must not be used as a substitute. The breaker points should be checked periodically for wear.

Refer to Figure 6 when making any adjustments.

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