Q.V.P. VAKUUM BAG - Manual (Page 2)

WHAT TO DO IF IT LEAKS
CHECKING THE BAG FOR LEAKS Check all connections for
loose fittings. Apply silicone or Teflon tape to the joints and tighten.
Line the inside of the bag with paper. Power the system and
sponge water over the bag and around the VCA. If the paper gets
wet, the leak is in that area.
CHECKING THE SYSTEM FOR LEAKS - Air Powered Systems.
Remove the tubing from the barb on the VCA. Place a rubber
material (like the rubber washers that came with the VCA) over the
barb. (If you use your finger, it will not be a tight seal). Power the
pump. If vacuum is not held when it shuts off, the leak is inside the
controller. The check valve could be open or the vacuum sensor
could be leaking at the brass screw if it has been adjusted several
times. Remove the screw and apply Vaseline around the o-ring
and replace.
CHECKING ELECTRIC PUMP SYSTEMS FOR LEAKS
Remove the tubing from the VCA and block tightly with non-porous
material. Power the pump, it should get to vacuum level and shut
off. If the vacuum starts to drop immediately the leak is not in the
bag but in the controller or the check valve. If it holds tight, then the
leak is in the bag and see instructions above for finding a leak in the
bag.
PUNCTURES can be repaired with a patch kit used to repair vinyl
pool liners. Be aware that stretched parts of the bag can have pin
holes that are not visible to the eye. Plastic tape can be used as a
temporary patch.
MANUAL SYSTEMS double check the check valve (small black
piece imbedded in the hose) that is installed between the pump and
the bag. The red end of the check valve should be towards the bag.
Reverse the hose if this in not the case.
CHECKING THE CHECK VALVE All units but the ES10 have a
plastic check valve imbedded in the vacuum hose. Remove the
hose (usually 12“ or less) from the unit and hold it vertical with the
red end to the floor. Add about 1” of water to the tube and blow on it.
This will show very small leaks as water will drip out of the lower
end. You cannot determine a very small leak just by blowing into
the hose. This will only reveal large leaks.
Checking the END CLOSURE When the bag is closed and under
vacuum, put a small amount of water in the open end of the bag. If
for some reason the end closure is not tight, water will seep into the
bag along the outer edges. Placing a spring clamp on the closure
at the edges or seams will normally stop the leakage. Also placing
a small amount of mastic material (like silly putty) along the inside
seam will also stop leakage.
WARRANT AND DISCLAIMER THERE ARE NO EXPRESS WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HERE OF. SELLER
DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR ANY PARTICULAR PURPOSE. SINCE SELLER CANNOT CONTROL THE
MANNER OR USE OF ITS PRODUCT AFTER THEIR SALE, SELLER WILL NOT BE RESPONSIBLE FOR ANY CONSEQUENTIAL OR INDIRECT DAMAGES. RATHER,
SELLER WILL AT ITS OPTION, EITHER REPLACE THE GOOS SOLD OR REFUND THE PURCHASE PRICE. NO WARRANTIES WILL BE APPLIED IF THE GOODS ARE
IN ANY WAY ALTERED OR MODIFIED AFTER DELIVERY BY SELLER.
General Operating Instructions
Place the workpiece inside the bag with a caul on the veneer. If
you do not use a caul, protect the bag from sharp corners with
cardboard or mat material.
Avoid situations where the bag will be stretched excessively as
in the drawing. Reduce the size of the baseboard if necessary
to allow sufficient bag material to touch the workpiece.
All hollow cylinders or large open areas must be capped or the
bag will be stretched beyond it’s limits and implode.
Place the bag on a rug or cardboard to prevent it from being
punctured.
Scrape the glue from the saw kerfs to keep the air channels
open. Also remove the harden glue from the bag. Glue that
has dried to a sharp point will puncture the bag the next time its
used.
To save time and money when veneering one side, invert the
workpiece so that the caul is on the baseboard. This way the
caul can be larger than the workpiece. You do not have to be
concerned with the overhang as when the caul is on top.
Remember to cover any sharp edges of the workpiece with
cardboard to protect the bag.
Push the bag into areas where the workpiece has a hollow or
undercut. The excess material will fill this area and not be
stretched into a void.
10/03/01
Drawing C
Baseboard
Base Substrate Material
Caul with
Rounded Corners
Veneer
Correct
Bag
Incorrect