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INSTRUCTIONS . . . con't. IF THIS PETROMETER IS REPLACING MODEL 1503 PETROMETER BLOWOUT GUN ANOTHER GAUGE: BE SURE the Transmission For cleaning out clogged Instrument trans- Line (1/4" copper tube) is CLEAR and that NO SEDI- mission Imes and other lines where no MENT is clogging the Air Bell. automatic means for blowing-out are pro- Clear the line. Disconnect the Petrometer and apply vlded.Uses CO cartridge.Completely safe air pressure (30, 40, 50 . . . lbs.) to the Transmission ) for all petroleum products. Incorporates Line.The air will force its way through and bubble out 1/4" female pipe connection that can be :1-: / / adapted to any fitting that may be encoun- of the tank liquid when the line is unclogged. A ":r tered.For use with other liquids.check with bicycle pump is often suitable. For best results use liquid supplier. the MODEL 1503 BLOWOUT GUN. Send for Bulletin 1503 INSTALLATION:Proceed as outlined in the instruc- MUST be made up absolutely air-tight for proper tions. If this is a new installation, refer also to the functioning of the Petrometer. instructions for the Tank Assembly Unit. Fittings See reverse side for installation instructions. OPERATING INSTRUCTIONS AERATION (PURGE):The principle of operation— require longer aeration. WHEN THE SYSTEM IS AIR balancing the column of gauge liquid against the TIGHT, this prolonged aeration is required only at head pressure of the tank liquid — depends upon installation. filling the Tank Assembly Air Bell with compressed After installation on an empty tank, the amount of air. For this, the Petrometer is equipped with an aeration required at the first filling of the tank is the Aerator (a manually operated pump). For accurate same as at a normal refilling. readings, ALL the tank liquid must be expelled from the Air Bell. The system CANNOT be over aerated. The first aeration is also a test of the system. A Excess air will merely bubble out of the Air Bell and properly functioning Petrometer in an air-tight escape through the tank vent. installation will hold its reading. If the gauge liquid INITIAL (FIRST) AERATION: An installation on a drops, refer to "SERVICE INSTRUCTIONS". full or partly filled tank, especially one containing a liquid of high viscosity such as No. 6 oil, liquid Once opened, the aerator must remain in open (UP) asphalt, etc., requires a large number of strokes on r position at all times. The Petrometer is a semi- the Aerator. IT IS IMPORTANT TO AVOID PARTIAL automatic instrument, and will require aeration only OR INTERRUPTED AERATION as this can cause after the tank has been filled, and for checking the "flooding" of the gauge and damage to the Aerator. indications. To check reading: Move aerator briskly a The amount of AERATION depends upon the depth few times (down-and-up) and take a reading. If in of the tank liquid and the type(hence,the volume) of doubt repeat above until two like readings are ob- the tank assembly. A standard Petrometer air bell (1- tained. DO NOT TOUCH AERATOR WHEN GLASS 1/2"O.D. x 6" long) for a 10 foot tank will take about IS FILLED TO THE TOP WITH LIQUID. Wait until 35 uninterrupted strokes on Model 1329 AERATOR. some of the tank contents is used,and liquid dropsto Tank assemblies of the type 1602, 1603, 1606, will a level below full capacity. SERVICE INSTRUCTIONS If indicating liquid drops after aeration, check con- is recorded on the bottom plate of each gauge. For nection at the elbow and line for air leaks. types 112, 114, 225, and 227 specify Refill No. 1122; for types 339 and 3312 specify Refill No. 3392. If liquid is discolored or faded, it will not affect the accuracy of reading. If objectionable, liquid may be Should the aerator require replacement, specify: changed and gauge cleaned. Refills for the Aerator No. 1329-Pa.The replacement aermUv comes Petrometer can be purchased in special plastic dis- with a convenient hexagonal base adapto that no pensers, with instructions for cleaning and refilling. special tools are required to fasten it.The erator Order refills by specifying the TYPE NUMBER which can be removed with a pipe wrench. RED-x INDICATING LIQUID(ACETYLENE TETRABROMIDE) DANGER—MAY BE FATAL IF INHALED—MAY CAUSE IRRITATION—DONOI Breathe Vapor—Avoid Contact with Eyes. Skin or Clothing—Use Only .,In Adill Venblauon—Keep Container Closed—Wash Thoroughly Aller Handling II allected by vapors,immediately remove person to fresh air,keep him warm andguiel and gel medical help promptly Il breathing slop,start artificial respiration In case of contecl.Iluah eyes or skin..In pUnly OI wale,to,at best 15 mmules PRINTED IN U.S.A. 11/82 BULLETIN 2000 CR