Quincy Compressor QT Series Instruction Manual

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Quincy Compressor QT Series Instruction Manual Manual pdf 29 page image

QT/QTS Series Quincy Compressor2022208700, September 2018 27Pressure SwitchThe pressure switch detects the demand for compressed air and allows themotor to start. When the demand is satisfied, the unit stops. Pressure switchesprovided by Quincy Compressor are pre-set at the factory and usually do notrequire adjustment.Induction SystemAir IntakeA clean, cool and dry air supply is essential to the satisfactory operation ofyour Quincy air compressor. The standard air filter that the compressor isequipped with when leaving the factory is of sufficient size and design to meetnormal conditions, when properly serviced, in accordance with the maintenancesection of this manual.If, however, the compressor is to be installed in a location where considerabledust, dirt and other contaminants are prevalent, consult your local Quincydistributor for advice and optional filters. A condensate trap must be installed asclose as possible to the inlet filter if, as a result of installation or environmentalconditions, there is any risk of moisture forming in the inlet piping. It is theuser’s responsibility to provide adequate filtration for those conditions. Oilbath filters are not to be used. Warranty will be void if a failure is determinedto be caused by inadequate filtration.Remote Inlet FiltersDepending on the size of the compressor and the size and construction of theroom in which the unit operates, the air inlet may have to be located outsideof the room. If it is necessary to remotely install the air filter, make the inletpiping as short and direct as possible. Remotely installed air filters can leadto vibrations in the inlet piping. These vibrations can be minimized by addinga pulsation dampener in the inlet piping between the remote inlet filter(s)and the compressor.If the inlet is routed to outside atmosphere, the inlet piping should beequipped with a hooded air filter and designed to prevent condensate, wateror snow from being ingested into the compressor.All inlet piping should be at least the same size (or larger) in diameteras the inlet connection to the compressor. For every 10 feet of inlet piping orevery 90° bend, increase the inlet piping diameter by one pipe size. The inletpiping must be thoroughly clean inside. Remove all weld slag, rust or dirt.Galvanized pipe with threaded or flanged fittings is preferred.Never locate the compressor air inlet system where toxic, volatileor corrosive vapors, air temperatures exceeding 100°F, water, orextremely dirty air could be ingested. These types of atmospherescould adversely affect the performance of the compressor system.Compressed Air Discharge SystemThe discharge piping should be of the same diameter as the compressordischarge connection, or sized so that the pressure drop at any point in theCAUTION !