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Chapter 1:  System Description 

 
Function and Theory 
 

Congratulations on your purchase of Marschalk’s 

System 1

 portable 12 volt D.C. oil-less compressed air 

system.  The design of this unit has evolved over a ten-year period during which continuous field-testing and 
user input have provided important design criteria.  The unit sets standards for quality, reliability, and 
portability in a compressed air package for groundwater monitoring.  It is one of the very few packages 
available today that is designed and built specifically to meet the needs of the Low Flow sampling method.  
Unlike other "tire inflation" compressors, the model 94000 has been designed to provide years of trouble-
free operation. 
Every unit is inspected, operated for several hours, and then re-inspected before leaving our plant to ensure 
that each unit arrives in perfect operating condition. 

Summary of Contents for Marschalk 94000

Page 1: ...27250006 REV 06 06 12 Marschalk Model 94000 12 volt DC Portable oil less Air Compressor Operation Manual...

Page 2: ...System Components 5 Chapter 2 System Installation 6 Chapter 3 System Operation 7 Low Flow Purging and Sampling 8 Chapter 4 System Maintenance 9 Chapter 5 System Specifications 10 Chapter 6 System Sche...

Page 3: ...proceed until you read and thoroughly understand the WARNING message A raised hand icon indicates CAUTION information that relates to a situation or condition that could lead to equipment malfunction...

Page 4: ...ibration will occur which can cause fittings to come loose Inspect and tighten as necessary as part of a normal maintenance program and prior to each use of the unit Never operate a damaged unit Befor...

Page 5: ...standards for quality reliability and portability in a compressed air package for groundwater monitoring It is one of the very few packages available today that is designed and built specifically to...

Page 6: ...e fittings including a male plug quick connect fitting on the tank discharge for connection of the controller air hose which is also included A Gast 1 6th horsepower heavy duty motor mounted oil less...

Page 7: ...VE BLACK NEGATIVE 5 This is a standard connection for 12 volt D C power and is found on virtually every vehicle battery 6 Close the ball valve located on the discharge side of the air storage tank han...

Page 8: ...dicated on the pressure switch label the compressor will shut off when tank pressure reaches 90 psig and will come back on when tank pressure drops to about 70 psig Connect the quick connect end of th...

Page 9: ...of each pump cycle For 100 mls minute flow rate use 1 x 1 minute pump cycle If Low Submergence operation of the pump controller is necessary longer pump cycles become even more important as the vacuu...

Page 10: ...o drain the tank simply open drain petcock on the bottom of the air tank for a few seconds then close the petcock Periodically check for loose hardware and tighten as necessary This includes all nuts...

Page 11: ...22 Amps Starting Amperage 160 Amps Storage Capacity 3 Gallons Max Pressure 100 PSI SCFM Atmosphere 1 25 SCFM 50 PSI 0 65 SCFM 90 PSI 0 40 Case Height 12 in Length 24 in Width 20 in Tank Height 8 1 2 i...

Page 12: ...11 Chapter 6 System Schematic Check Valve SS Hose Air Filter Handle 12vdc Motor Pressure Switch Air Out Off Auto Air Tank Compressor Head Pressure Relief Tank Drain Gauge Valve Starter Solenoid...

Page 13: ...tor 17250017 Air Tank 17250018 Pressure Gauge 17250019 Starter Solenoid 17250020 Pressure Switch 17250021 Ball Valve 17250022 Check Valve 17250024 Rubber Feet 17250026 Stainless Steel Hose 27250003 We...

Page 14: ...prior to return of any equipment to our facilities please call our 800 number for appropriate location An RMA will be issued upon receipt of your request to return equipment which should include reaso...

Page 15: ...Geotech Environmental Equipment Inc 8035 East 40th Avenue Denver Colorado 80207 303 320 4764 800 833 7958 FAX 303 322 7242 email sales geotechenv com website www geotechenv com...

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