SIOUX VAC-FORCE 1557 Manuel D'instructions page 4

OPERATING INSTRUCTIONS
PLEASE READ CAREFULLY BEFORE OPERATING UNIT
1. Fit air drill into drill holder (with corresponding
sleeves where required). Ensure selected drill has
suitable power, torque, and speed for cutter size
and type of material. If your drill has a chuck larger
than the drill clamp hole, then the chuck will have to
be removed prior to installation of the unit. Tighten
screws in drill clamp to lock drill in place. Connect
air drill supply to air drill.
2. Select cutter or drill bit and place in drill chuck and
firmly tighten (see Drill Operator's Manual).
3. Mark center of hole on working surface with a
center punch.
4. Using (5 mm) allen key provided, loosen both
screws at each end of the clamp and adjust so that
the cutter tip is as close as possible and the drill
clamp is positioned as low as possible on the air
cylinder as shown in figure 1. This will improve the
distribution of the load through the unit. Tighten
screws with (5 mm) allen key.
5. When cutting holes near the edge of your working
surface, it may be necessary to move the cutting
point closer to the edge of the vacuum pad. Using
the 5 mm allen key loosen the tear drop and rotate
to desired location and tighten as shown in figure 2.
Return cutting point to the central axis when these
holes are completed as shown in figure 3. This is
the optimum position for maximum adherence.
6. Using (5 mm) allen key provided, firmly tighten 3
points as shown in figure 4.
7. Connect the 1557 1/4" NPT inlet (figure 5) to a
filtered air supply, with a minimum bore size of (7
mm) or 5/16" and an operating air pressure range of
75-120 psi.
8. Open air supply control valve (figure 5). Any air
heard expiring to atmosphere will be coming from
the exhaust holes located in the front of the handle.
DO NOT BLOCK EXHAUST OUTLET.
9. Hold the air drill handle in your right hand and the
1557's handle with your left hand. Ensure that the
unit's vacuum pad and all moving air drill parts are
clear from everything including your person. Turn
on air drill. If air drill functions normally, then do not
proceed, as the safety valve pre-test has failed -
refer to trouble shooting on Page 6. If air drill does
not function normally, then the safety valve pre-test
indicates that the safety valve is working and has
Air Cylinder
Tear Drop
4
Figure 1
Figure 2
(Drill removed for clarity)
Figure 3
Drill Clamp
3mm