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Teledyne API M701H High Performance Zero Air Generator Operation
06712B (DCN5875) 5-7
5.2.8 Storage Tank
The storage tank serves two functions. As its name implies, it stores air so that when
the demand is low, the compressor can be turned off to conserve energy, allowing the
storage tank to supply the air requirements. The tank also serves as “filter capacitor”,
preventing pulses generated by the drier cycles or water drain valve from reaching the
output port on the rear panel.
The air in the tank has been dried so there is no need for a tank drain and no concern
about internal corrosion.
The tank is a commercial gas storage cylinder, rated at 1800 psi, and is not modified or
altered in any way that can harm its integrity.
5.2.9 Pressure Sensor
The pressure sensor senses the pressure in the storage tank and controls the
compressor through the control board.
It is set at the factory to turn off (cut out) the compressor at 78-82 psig and to turn the
compressor on (cut in) at 45-50 psig.
5.2.10 Pressure Regulator
The Model 700 calibrator requires that its air source be stable and not subject to
compressor-induced pressure surges or pressure variations with flow. The pressure
regulator serves this function. It is set at 30 psig at the factory except for specially
modified units. Should adjustment be desired, the regulator is accessible on the front
panel. The adjustment knob has a push-pull locking ring which should be reengaged
after making an adjustment to prevent the knob from turning under vibration.
When the M701H is used with the Teledyne API Model 700E Calibrator, the pressure
should be between 28 and 32 psig.
WARNING
THE M701H NOMINAL DELIVERY PRESSURE IS 30 PSIG. ONLY
SPECIALLY MODIFIED UNITS WILL REQUIRE THAT THE DELIVERY
PRESSURE BE SET HIGHER.
ON THESE SPECIALLY MODIFIED UNITS NEVER SET THE DELIVERY
PRESSURE HIGHER THAN 50 PSIG. TO DO SO MAY CAUSE DAMAGE
TO THE M701H AND INJURY TO THE OPERATOR.