Promac 930ELB, Руководство по эксплуатации

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5-1. Feed Shaft Spring Tension:
The feed shaft return spring is adjusted at the factory; however, during the life of the drill press you
may want to adjust the feed shaft return spring so the feed shaft return pressure suits your operating
needs.
To adjust the feed shaft spring tension:
1.
UNPLUG THE DRIL PRESS !
2. Wipe off any oil on the spring lock cover so it does not slip in your fingers when you hold the
cover from spinning (see
Figure 23
).
3. While holding the spring lock cover against the side of the head stock so the cover stays splined
with the locking lug; loosen the jam nut and loosen the cover nut approximately 1⁄4" (see
Figure
25
).
4. Put on heavy leather gloves to protect your hands from possible lacerations if the spring uncoils
during the next step.
5. Pull the cover outward just enough to disengage the spring-cover lock slot from the locking lug.
Note: It is important to keep a good grip during this step. Letting go of the cover will cause the
spring to rapidly uncoil.
6. Rotate the cover counterclockwise to increase spring tension, or let the cover slowly unwind in the
clockwise direction to reduce spring tension.
7. Engage the next available spring-cover lock slot with the locking lug and hold the spring lock cover
tightly against the side of the headstock.
8. Snug the cover nut against the spring cover just until the nut stops, and then back off the nut
approximately 1⁄3 turn, or just enough so there is no binding at complete spindle travel.
9. Hold the cover nut and tighten the jam nut against the cover nut.
Figure 22
Screw
Figure 25
Wrench
Figure 24
Lock Nut
Spring Lock
Cover
Spring Cover
Lock Slot
Figure 23
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