CF50.0 CRITICAL FUEL SYSTEMS For Fuel Storage Up To 250,000 Gallons (946,000 liters)

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1 CF50.0 CRITICAL FUEL SYSTEMS For Fuel Storage Up To 250,000 Gallons (946,000 liters) Overview: THE CF50.0-PLC-UL Fuel polishing system was initially designed in 2015 for a very large data center group. The primary focus was to eliminate the possibility of standby power failure due to contaminated fuel; but more important was the safe handling of diesel fuel to avoid a catastrophic incident such as fire or explosion. Even though diesel fuel is relatively safe with a flash point greater than 100F; it does have a lower AIT; 254C for #2 diesel compared to 371C for gasoline. With a lower auto ignition temp. than gasoline. Diesel fuels that come in contact with a heated surface will ignite at a much lower temperature than gasoline. All mechanical and electrical devices have a probability of failure. Therefore Fueltec has made every effort to design a critical power fuel filtration system that minimizes the possibility of a catastrophic accident involving diesel fuel with the Model CF50.0 System Safety Features: Positive displacement 50 GPM pump with a pressure relief valve and 5 HP explosion proof Class1, Div. 1 motor Temp. Code T4 Intrinsically (IS) pressure and vacuum sensors, flow control, water level sensors and wiring. Directional control valves for tank selection with explosion proof NEMA 7 actuators. The UL 508A Control Panel is located outside the stainless steel equipment enclosure Standby Power reliability is only as good as the condition of its fuel. Virtually all diesel fuel contains some moisture. Additional water builds in tanks as atmospheric moisture condenses. Moisture can accumulate in diesel tanks as condensate droplets on exposed tank surfaces, as dissolved water in the fuel, and as water bottoms beneath the fuel. Microbes depend on this water for growth. Additionally, microbes depend on the organic and inorganic molecules in diesel fuel for nutrition. Consequently, some species attack the fuel directly, growing at the expense of hydrocarbons and non-hydrocarbon fuel components. The biodegradation of fuel, in support of microbial growth, is a direct impact of contamination. Critical Power Group Beaumeade Circle Unit 190 Ashburn, VA Annual tank cleaning may not be the answer to safe fuel: Under ideal conditions, with water present, bacteria can double in size and divide in two every 20 minutes, onset of a serious infestation can be a matter of just weeks. Indirect effects include: Engine Failure from clogged filters Microbial influenced corrosion Sludge formation Organic acid accumulation Corrosive deposits on engine parts Fuel Injector tips blown off (from water in fuel) 2015 Lenz All Rights Reserved Design subject to change without notice

2 CF50.0 CRITICAL FUEL SYSTEMS For Fuel Storage Up To 250,000 Gallons (946,000 liters) Features: Touch screen HMI/PLC controller with multi-tank programming and remote Modbus RTU operation Underwriters Laboratory 508A listed industrial control within a 4X stainless steel enclosure Intrinsically safe sensors and wiring Explosion proof pump motor and control valves Auto-drain and tank for separated water Stainless steel system equipment enclosure System Alarms: 1. No fuel flow 2. High separated water in in trap, start auto drain 3. Service primary filter, stop system 4. Service filter/ coalescers, stop system 5. Service final filters, stop system 6. Leak detected in sump, stop system Fuel tank cross-feed transfer system 7. Pump motor temperature high, stop system Stainless steel filter and water separator housings 8. High pressure, stop system Stainless steel piping and manifolds 100% U.S. MADE Critical Power Group Beaumeade Circle Unit 190 Ashburn, VA Lenz All Rights Reserved Design subject to change without notice

3 SPECIFICATION Model CF50.0-PLC-IS-UL-3T v_1.0 Automatic 50 GPM Fuel Polishing System W/ Fuel Transfer and Auto Drain 1. Design: Three diesel storage tank system. (not for gasoline) Complete factory-assembled automatic particulate filtration, water separation and removal system to maintain the purity of No. 2 fuel oil held in extended storage. The programmable system shall circulate the oil from the selected storage tank, through the system, removing water and particulate matter, then returning the clean dry fuel back to the storage tank. The System shall exceed diesel engine manufacturer s cleanliness target of ISO 18/16/13. The system shall separate free and emulsified water from diesel fuel with a military type micro-glass coalescer/filter and hydrophobic water separator within a stainless steel top loading housing. Water absorbing filter media shall not be required. System shall have a touch screen HMI and PLC controller that schedules system operation with alarms and sensors that automatically indicate filter conditions, presents of water in trap, fluid leak, fuel transfer, and automatic water drain. The system may be remotely operated with Modbus RTU or optional TCP/IP This system includes fuel transfer between storage tanks. Industrial electric control panel shall be Underwriters Laboratory 508A and CE Listed Electrical components and circuits within the filtration equipment enclosure shall be intrinsically safe (IS) or NEMA 7. Fuel Pump Motor Shall be Class 1, Div. 1, Temperature Code shall be T-4 2. The Four stage filtration system shall consist of but not limited to the following components: First stage primary filter, shall be 5 micron bag type within a stainless steel housing. Second stage micro-glass filter/coalescer within a stainless steel housing: Third stage water separator Teflon coated stainless steel Forth stage final spin-on filters 3 micron 3. Fuel circulation pump, 50 GPM w/60psi pressure relief, 460V 3PH 60Hz 5HP Ex Class 1, Div. 1, Temp Code T-4 4. Stainless steel separated water trap seven gallon capacity w/ automatic bottom drain valve Valves: Supply and return valves, shall be 2 w/electric NEMA 7 actuators 115V 60Hz, and 2 Flange Manual Valve, 2 Check Valve 2 Air Bleed Valve on primary filter ¼ Automatic Air Bleed Valve 3/8 Automatic separated water drain valve shall be ½ w/ electric NEMA 7 actuators, 115V 60Hz 5. Sensors: Vacuum differential sensors shall be intrinsically safe (IS) and transmit condition of first stage filter to HMI/PLC Pressure differential sensors shall be intrinsically safe (IS) and shall transmit condition of filter/coalescer to HMI/PLC

4 Two Water level switches shall be intrinsically safe (IS) and shall transmit water levels in water trap to the HMI/PLC Pressure differential Sensor shall be intrinsically safe (IS) and shall transmit condition of final filter to HMI/ PLC Fluid flow sensor shall be intrinsically safe (IS) and shall transmit fluid flow to the HMI/PLC 6. Electrical: Industrial Control Panel Underwriters Laboratory UL-508A and CE listed Power required: 460AC 3PH 60 Hz 20A Enclosure stainless steel NEMA 4X Voltage: pump 460V 60Hz, control 24DC, valves 115V 60Hz Wiring within equipment skid enclosure shall be NEC Class 1 Div.2, or intrinsically safe (IS). Install conduit per NEC, potting required in all conduit that exits the equipment enclosure. 7. Controller: HMI/PLC touch screen Programmable: date, time, tank selection, run time MODBUS RTU for remote operation shall be included Display: (1) Low water in trap (2) Vacuum at primary filter (filter change instructions) (3) Pressure at final filter (filter change instructions) (4) High water in trap (drain separated water) (5) System on (6) Tank selected for filtration (7) Day selected for filtration (8) Run time selected for filtration (9) Time of day (10) Pressure at coalescer (service coalescer) iv)alarms: (1) High water in trap (2) High vacuum at primary filter (system stop) (3) High pressure at final filters (system stop) (4) Fluid in system sump (5) No fluid flow (6) Pressure at coalescer (system stop) 7. Equipment Skid: Equipment skid shall be welded aluminum with forklift sockets. A NEMA 4X electric control enclosure shall be mounted outside the equipment enclosure. Shipping dimensions 54in. (1392mm) W x 96in. (2438mm) L x 62in. (1575mm) H 8. Auto Drain (separated water) An intrinsically safe (IS) float switch shall signal high and low water levels in the water separator housing and activate a NEMA 7 electric ball valve to drain high water. A second IS float switch shall be installed in series with the first float switch for redundancy. The two float switch housings shall be built from 316SS The HMI/PLC controller shall activate the electric ball valve with signals from the float switches.

5 9. Fuel Transfer System controlled by the HMI/PLC shall transfer fuel between fuel storage tanks. 10. Equipment enclosure shall be made from 14GA. Type 316 stainless steel with top hatches and side door for access to service filters and water separators. 11. Options: Heated Housings and enclosure GSM messaging Modbus TCP/IP Fuel tank access flange with telescopic pickup tube Fuel tank level gauge Auto drain storage tank