Deltech Fitness PYRAMID 8000 Installation, Operating And Maintenance Manual
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Contents
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SYSTEM ALARM — The red SYSTEM ALARMindicator signals air system or dryer operating condi-tions that may affect dew point performance or causedamage to the dryer.Temperature SCAN/SEEK Push ButtonThe SCAN/SEEK push button on the System Opera-tion Monitor provides a readout on the alphanumericdisplay of the following temperatures:• inlet air• refrigerant suction• refrigerant discharge• ambient airThe display can be programmed to automatically scaneach temperature for five seconds in sequence or tocontinuously display any selected reading. The corre-sponding light on the system schematic will illuminatewhen the temperature is displayed.To scan the temperatures (normal operation): pressand hold the SCAN/SEEK button for three seconds.Each temperature will then be displayed for five sec-onds in the following sequence: inlet air, refrigerantsuction, refrigerant discharge and ambient air. To stopthe scan mode, press the TIME ADJUST button once.To display any selected temperature (seek;test/check mode): press the SCAN/SEEK button once.The display will read the same temperature until thebutton is pressed again. While in this mode, the alarmset points and service due light are bypassed.Critical Air and Refrigerant TemperaturesTable V provides the normal range for each displayedtemperature when the dryers are operated in accor-dance with specified conditions. If a temperaturereaches the warning set point indicated in the table,the corresponding light on the system schematic willflash during the five second display. If the temperaturereaches the alarm set point indicated in the table, theSystem Alarm indicator will light. Refer to the FieldService Guide in this manual if any temperature read-out falls outside the normal range.Inlet Air Temperature — If the inlet air temperaturefalls outside the normal range, the dryer may fail toachieve the required dew point. Check the compressoraftercooler and adjust aftercooler operation to ensurespecified inlet air temperature to the dryer.Refrigerant Suction Temperature — If the dryer hasbeen operating for more than 20 minutes and the re-frigerant suction light flashes, there may be a malfunc-tion in the refrigeration system. Turn the dryer off andhave a refrigeration mechanic identify and correct themalfunction. If the dryer is under warranty, call yourlocal distributor for authorization before servicing.Pyramid 8000 ® Series Purifiers (Bulletin 289) 7Table VAir and Refrigerant TemperaturesDIGITALDISPLAYTHERMOCOUPLELOCATION COMMENTSNORMALTEMPERATURERANGEWARNINGSETPOINTALARM SETPOINTInlet Air Inlet air pipingInlet air temperature varies withchanges in aftercooler coolingmedium temperature and aircompressor unloading. Inlet tem-peratures higher than 100°F re-duce drying capacity.40°F – 120°F 100°F 120°FRefrigerantSuctionRefrigerant line up-stream of compres-sorThese refrigerant temperaturesvary with the refrigeration loadand are controlled by refrigera-tion valve settings. These read-ings are used primarily by servicepersonnel to analyze refrigerationsystem performance.32°F – 55°F N.A. 25°FRefrigerantDischargeRefrigerant linedownstream ofcompressor 160°F – 240°F N.A. N.A.Ambient Air Outside the con-denserAmbient air temperatures higherthan 100°F will reduce drying ca-pacity. 35°F – 120°F > 100°F/< 35°F > 120°F/< 35°FIntermediateAirOutside surface ofchiller dischargepipingIntermediate air temperature var-ies with inlet air pressure, ambi-ent temperature and airflow. Thisreading is used primarily by serv-ice personnel to analyze refrig-eration system performance.Variable; seeTable VI N.A. N.A. |
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