TM 10-6640-238-13 1-29 g. Drain System.  The drain system consists of valving and piping required to route condensate and waste water from the sink and equipment to one of two deck drains located in the Petroleum Laboratory.  The sink and most of the equipment in the laboratory compartment drain through the trailer floor to a quick-disconnect coupling and hose.  The equipment located in the mechanical room drains to the forward deck drain.  The system is provided with a drain tank mounted under the sink which contains a submersible pump.  Waste water from the RVP bath, oxidation bath, and sump pump tank overflow drain through the trailer floor (sink drain). h. Submersible Pump  (Sump Pump).  The sump pump, located under the sink, is constructed of high-impact, corrosion-resistant plastic with a built-in carrying handle.  A screened inlet prevents large solids from entering the pump.  It operates on 110V, 60 Hz, single-phase power supplied from A1CB14 located in MAIN POWER PANEL A1.  Return water from the electric still, distillation unit, and oxidation bath drains into the sump pump tank and is returned to the water tank via the water return line and sump pump. i. Environmental Control Unit.  The four ECUs are identical.  Each has its own controller.  They operate on 208V, 60Hz, 3-phase power and are rated at 18,000 BTUs per hour when cooling and 12,000 BTUs per hour when heating.  During the purge cycle, ECU blowers pressurize the Petroleum Laboratory to expel any explosive gases. 1-13.    FUNCTIONAL DESCRIPTION OF PETROLEUM LABORATORY UNIQUE EQUIPMENT. The following paragraphs describe some of the equipment mounted or stored within the Petroleum Laboratory.  For equipment not described in these paragraphs, refer to the appropriate equipment manual. a. Analytical Balance.  The analytical balance is mounted on a damping vibration support which is located on the roadside countertop and is used in the performance of ASTM test D-2276.  The analytical balance comes with its own power supply unit which receives 110V, 60Hz, single-phase power from a convenience outlet in the laboratory compartment.  It is a fully automatic, top-loading balance with up front one-finger control of all balance functions.  It provides digital readout that can be viewed from any angle.  The door on top and one on each side make the weighing chamber fully accessible for formulations and liquid transfer operations.  The weighing chamber is housed in glass for unobstructed viewing. b. Anti-Icing Additive Testing Kit.  The anti-icing additive testing kit is contained in a carrying case and is stored above the oxygen/nitrogen cylinder cabinet and is used to determine the percent volume of anti-icing additive in jet turbine engine fuels.  It consists of a hand held, direct reading refractometer, support base rod and ring, separatory funnel, graduated cylinder, aluminum dishes, piston pipets, and a polypropylene bottle. c. Burnout Furnace.  The burnout furnace is used for ASTM tests D-482, D-874 and D-2276 and is mounted on the roadside countertop.  It operates on 110V, 60Hz, single-phase power supplied by A1CB12 located in the MAIN POWER PANEL.  The furnace has a maximum operating temperature of 2005F (1093C), a capacity of six medium or three large flasks, eight heat rate settings to vary power to heating plates to accommodate any workload, and an automatic soak timer with settings from 0 to 4 hours.  It is used for heat treating, precipitate drying, ashing, igniting and fusing.  It is supplied with a pyrometer. d. Calculator.  The calculator is stored in laboratory cabinet M2.  It has both a display and a built-in printer.  It is solid state and operates on four "AA" alkaline batteries or an AC adapter that will plug into a 110V, 60Hz, single-phase convenience outlet. e. Carbon Residue Test Apparatus.  The carbon residue test apparatus is stored in laboratory cabinet B2 and is used to determine the carbon residue of petroleum products in accordance with ASTM test D-189.  This method determines the amount of carbon residue left after evaporating an oil under specified conditions, and is intended to provide an indication of the relative carbon forming propensity of the oil.  The apparatus consists of a burner, metal funnel, iron crucible, wood block, stand, and sand cup, wire stand, ceramic cup, porcelain ring and a gas control valve.