Virutex SVN250 Manual De Instrucciones página 8

7. CLEANING THE SUCTION HOLE FROM DUST
OR PARTICLES
Even though most dust particles will not affect the clamp,
sometimes the clamp may become blocked. Simply follow
these instructions to unblock
1. Clear excess dust and particles from the work surface
of the clamp by blowing or sweeping.
2. Reduce air supply pressure to approx 2.7 bar.
3. Locate the air outlet on the side of the SVN250 unit
(you can feel the air coming out when it is in operation).
The SVN250 DUO has two outlets.
4. With the air switched on hold your finger B (Fig. 5)
tightly over the exhaust and block the airflow. DO NOT
PUT YOUR FACE OVER THE CLAMP WHILST DOING THIS,
IT MAY BE HAZARDOUS. DUST WILL FLY INTO YOUR FACE.
5. Airflow is reversed and will now come out of the
suction hole.
6. Dust and particles will be ejected from the suction
hole.
7. You may need to repeat this procedure a couple of
times to completely unblock the suction hole.
8. Remember to blow or sweep off the excess dust.
9. The unit should be ready for working.
8. IRREGULAR, SMALL SHAPES
The SVN250/SVN250 DUO unit can hold small and
irregular shaped work pieces by moving the seal into
the work grooves of the clamp that best suits the shape
required by using the different sized seal.
If the seal may need to be cut to fit the size of the work
piece. It is better to cut it 3 mm longer (1/8") than is
exactly required, as the rubber will compress readily
(Fig. 3 and 4).
9. SMALL WORK PIECES
The (Fig. 6) shows a small piece of material being worked
safely. Despite the small dimensions (the piece measures
only 100 x 200 mm) it remains on place and does not
move even with a high power plunge router.
Note that the clamp has a rated holding power of 800
gr/cm , so a large area is held with greater force than
2
a small area.
Use the largest possible holding surface under the
workpiece.
10. LARGE WORK PIECES
Larger work pieces of up to 1 m
SVN250/SVN250 DUO unit, but the work piece will need
to be supported at its extremities, as the lever action
may cause the work piece to lift off the clamp (Fig. 7).
Very large work pieces will need to be held by 2 or
more clamps.
By using more than one clamp the margin of safety is
increased particularly if using timber. Knotholes may
8
can be held by just one
2
cause loss of suction in a particular clamp but the
other clamps holding the large work piece may provide
adequate holding power.
11. INTENDED FUNCTION
The SVN250/SVN250 DUO unit is designed to hold any
flat non-porous material without damaging delicate
surfaces.Although it can, the unit is not intended for
use as a lifting device.
This product is not intended for use on moving or
dynamic items.
If the work piece is drilled or cut through where the
holding vacuum has been created, this will cause loss
of holding instantly.
The unit is not designed to hold tall items
12. CLEANING
The SVN250/SVN250 DUO unit requires no special clea-
ning. Air dusting is all that is usually required.
Do not use solvents.
Internal parts of the clamp will be adversely affected by
dust and particles. Ensure all incoming air is free from
dust and particles, as this will reduce the performance
significantly.
13. USEFUL NOTES
For any given application use the largest possible holding
area. More area gives greater holding power.
The air supply line is transparent to allow monitoring
of the quality of the air supply. Dust and oil in the air
supply will reduce the performance of the unit and
ultimately cause its demise.
Although it is possible to use just one square of the
clamp we do not recommend it, particularly for routing
works.
The holding power of the SVN250/SVN250 DUO unit is
rated at 800 gr/cm . So more surface area equals more
2
holding power
MDF panels are porous and will not give a stable work-
piece. Painted MDF works very well
Cracks, knots and pinholes will allow air to flow through a
piece of wood causing greatly reduced holding power. Small
openings may be successfully sealed with masking tape.
14. OPTIONAL ACCESSORIES
5046350 Distributor for 5 units.
5004282 Set of 3 rubber seals.
5004283 Tall rubber seals, 10x6 mm for curved or
irregular surfaces.
8538005 Transparent pipe 6 mm (1 m).
5038044 On-off valve 1/4".
5038047 No-return connector 6 mm x 1/8".
5038046 Connector quickfit 1/4".
5038049 Tee junction 6 mm quickfit.