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Description
ultra.drain UAD series drains are electronically controlled condensed water drains that
discharges water trapped in the lowest parts of compressed air installation out of the
system. This water is a condensed water vapor that is always present in the atmosphere.
Because of laws of physics, some vapor always condenses during compression of air.
ultra.drain UAD series drains consists of a water tank, valve assembly and electronics. The
water tank should be the lowest part of the compressed air system where condensed water
collects. In the tank, there is a water level sensor. This way, electronics could detect the tank
is full. Then, it operates the electromagnetic valve to discharge condensed water from
compressed air system. The valve is located in the valve assembly which is constructed so,
that it can be replaced easily. Another part of the valve assembly is a strainer where solid
parts of debris are intercepted. The strainer is located in front of the ultra.drain UAD so that
it could be reached easily.
In the condensed water leaving the ultra.drain UAD, there are still small particles of rust and
remains of compressor oil. Oil must be removed before the water is drained to sewage
system. To remove oil, water-oil separator ultra.sep UAS device could be used.
Because of its construction, the UAD could be attached to the compressed air system
horizontally or vertically. Under the pressure vessel or under the refrigerator dryer, the UAD
is fixed horizontally whereas under filters, it is more convenient to fix it vertically.
The valve is operated by electronics. It opens the valve when a button on the electronics
cover is pressed or when water level in the tank reaches threshold. Occasionally, a timed
venting mode that combines water level triggered discharging and timed venting is desired.
By pressing the test button, we could see if the ultra.drain UAD is operational. Besides, the
test button makes possible to discharge water that has collected in a system during
maintenance manually.
The main mode of operation is a water level triggered discharging. The valve opens when
water level in the ultra.drain UAD tank reaches threshold and it closes back before the tank
is empty. This way, only condensed water is discharged and no compressed air is lost.
In the timed venting mode, the valve is opened when water level reaches threshold, too.
Besides, when the valve is closed continuously for a predetermined period, it is opened
shortly although there is no water in the tank. During working day, water in UAD collects
rapidly so that venting period would never expire and there are no air losses. When
production rests, UAD is opening its valve. But since these discharges are short and sparse,
air losses are small. The timed venting mode should be used when there is a lot of debris in
condensed water and piping upward the UAD could not be inclined enough. Such situation is
quite common under pressure vessels. It may happen that air could not escape from the
tank upward the piping and while there is air around water level sensor, the UAD would
never open. In the timed venting mode, the valve is opened after the venting period has
expired and trapped air is allowed to escape through drainage. Now, condensed water can
reach water level sensor and UAD is opening its valve until all collected water is discharged.
