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Idiomas disponibles
Idiomas disponibles
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Duo Seal oil can be purchased wit any of our dealers or directly with
Felisa. The vacuum guarantee in our pumps applies only when Duo Seal
oil is used.
TRAPS.
Where corrosive vapors or large quantities of condensable vapors are
involved from vacuum processing, a trap may be used in the connecting
line to the pump. It will help prevent damage to the pump mechanism
and reduce oil contamination.
OPERATION.
a) Starting:
Before attaching the pump to a system it is well to familiarize yourself
with the function and action of the pump which you have now acquired.
Remove the intake and exhaust port plugs and temporarily provide a
stopper for the intake and install the exhaust filter.
CAUTION: Do not run this pump with the intake open directly to
the atmosphere. The pump will overheat, excessive oil mist will be
emitted from the exhaust and the pump will eventually seize.
B) Oil level:
The amount of oil suitable for efficient and satisfactory performance
should be determined after the pump has reached its operating
temperature. If after a short period of operation the level should fall, it is
likely the result of oil entering some of the interior pockets of the pump.
Fill the pump until the oil level falls half way of the oil level window. If
a gurgling sound occurs, additional oil must be added. Mechanical
pumps will gurgle under three conditions of performance.
* When the oil level in the pump is lower than required.
* When a large leak is present in the system.
* When the gas ballast is open.
Best performance of a mechanical pump is generally obtained after
sufficient time has been allowed for the pump to come to operating
temperature.
CLEANLINESS.
Take every precaution to prevent foreign particles for entering the
pump. A fine mesh screen is provided for this purpose in the intake
passage of all Felisa pumps.
LEAK DETECTION.
The importance of eliminating all leaks in a vacuum system is obvious
when it is realized that a leak into the system, at atmospheric pressure,
expands in volume by a factor of 750,000 to 10,000,000 or more. The
pump must remove this added volume to maintain the desired vacuum.
Fortunately a number of effective techniques for leak detection have
been developed. Large leaks can be located by pressurizing the system
and painting the suspected area with a tick soap solution. Escaping air
will produce soap bubbles.
PRECAUTIONS.
Never use the pump for pumping fuels or fuel vapors an explosion
might occur.
A few simple precautions are all that is necessary when shutdown is in
order. If a gauge is connected to the system, first isolate the gauge, then
turn off the pump and open the system to atmosphere. If the pump is
removed from the system, cover the intake port with a rubber stopper or
suitable cover to protect the pump against contamination and loose
particles. If the pump has been contaminated in service and is going to
be shelved for a prolonged period it is best to drain the oil and refill
with a fresh charge.
REPAIRS.
Like any other manufactured product, some parts of the pump could
damaged after a long operation time. To replace them always use
original factory parts, a list of which is included in this manual. Always
order the parts with its corresponding number. All the parts can bee
ordered from any distributor or directly from Felisa.
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