Phillips Pump LLC

Use the following suggested specification in those situations where the main storage tank is on the same level or above the day tank and where the fuel cannot gravity feed back to the main storage tank.

2.04  FUEL OIL DAY TANK WITH SINGLE SUPPLY & RETURN PUMP AND RUPTURE CONTAINMENT

A.  Provide a ___ gallon single wall rectangular day tank with channel side supports, 1" NPT drain, 4" NPT emergency vent port with cap, visual fuel level gauge, 2” vent with cap and a 2" lockable manual fill cap. Day tank shall be per UL 142 specifications as manufactured by Phillips Pump LLC, Bridgeport CT. Series PDTSR-60

B.  Tank connections shall include 1" NPT supply and return ports, 1" overflow port with required vent openings.  Supply and return ports shall have extended drop tubes to prevent surging in the day tank.

C.  Provide day tank level control probe arranged to monitor the fuel oil level.  Probe shall be designed for installation in the top of the tank to control high-level/return pump on, high-high level, low-level level, critical low level and supply pump on/off conditions.

  D.   Provide a fuel supply pump with a capacity of not less than ___ GPM @ ___ PSI discharge pressure when operating with #2 fuel oil.  Pump shall be close coupled to a ___ HP, 1725 RPM open drip-proof motor. Pump and motor shall be mounted in non-removable tank top covered enclosure and hard-piped into tank.  Supply pump suction shall include a normally closed solenoid valve, which will open when supply pump is engaged.

E.   Provide a fuel return pump with a capacity of not less than ___ GPM @ ___ PSIG discharge pressure when operating with #2 fuel oil. Pump shall be close coupled to a ___ HP, 1725 RPM open drip-proof motor.  Pump and motor shall be mounted in non-removable tank top covered enclosure and hard-piped into tank.  

F.  Rupture basin, open top, shall surround tank with 150% capacity of tank specified.  Provide in basin a rupture basin float switch with alarm and pump shut down which functions upon detection of oil in the rupture basin.

G.   Provide day tank mounted system control cabinet to monitor and control the fuel oil delivery system in response to day tank demand.  Cabinet shall be completely pre-wired, tested and shipped as an integrated system to insure jobsite reliability and shall be capable of operating on 115 volt, single phase, 60 Hz electrical service.  Control strategy shall be microprocessor-based and shall have sufficient I/O to accomplish all necessary control functions. Enclosure shall be constructed of a minimum of 14-gauge steel, constructed to NEMA 1 standards.  Cabinet interior and exterior shall be primed and finished in durable chemical-resistant enamel suitable for industrial environments. The control strategy shall be burned into an EPROM at the factory, safeguarded against re-configuration by unauthorized or unqualified personnel with all manual switching wired direct in order to run the system if a processor lost should occur. Black phenolic labels with engraved white lettering shall identify all cabinet front devices and control cabinet shall consist of but not be limited to the following:

• Microprocessor for pump control

• Magnetic motor starter

• Motor circuit breakers

• Manual-Off-Auto illuminated mode selector switch for each pump

• Press to test button for all alarms and indicating lights

• Alarm silence / System reset and system test push-buttons

• Alarm buzzer

• Discrete output for common alarm to interface with the BMS

• Discrete output for common alarm to interface with generator for critical low level shut down

• System indicating alarms as follows:

• (1) Power on light

• (1) Day tank high-level alarm

• (1) Day tank high-high level alarm

• (1) Day tank low-level alarm

• (1) Day tank leak detected alarm

Day Tank Pump Operation - The operator will establish the day tank's pumps mode of operation:

Daytank Supply Pump Off - If the daytank supply pump is turned off, the system will not engage the supply pump or open the daytank supply solenoid regardless of any alarm, pump on or pump off signals.

Daytank Supply Pump Manual - If the daytank supply pump is selected as manual, the system will engage the supply pump continuously and the daytank supply solenoid will be held open, as long as the daytank supply pump is in manual, regardless of any alarm, pump on or pump off signals.

Daytank Supply Pump Auto - With the daytank supply mode in auto, the controller will engage the supply pump and open the daytank supply solenoid when the daytank fuel level is at 50%. The system will continue to engage the supply pump until the fuel level has reached 85% and daytank demand is satisfied. 

Return Pump Off - If the return pump is turned off, the system will not engage the return pump.

Return Pump Manual - If the return pump is selected as manual, the return pump will operate continuously as long as that pump is in manual mode regardless of any alarm, pump on or pump off signals.

Return Pump Auto - With the return pump in automatic mode, if fuel continues to rise in the daytank and the level reaches 90%, the system will engage the return pump, sound the alarm and display a high level alarm. The return pump will remain engaged until the fuel level is reduced to 85%, during which time the supply pump will be locked out and the daytank supply solenoid valve will not open. Once the fuel level is reduced, the system will reset itself and the supply pump will operate normally, however the high level alarm will remain until the alarm is cleared and the system is reset.

Alarms

Critical Low Level Alarm (20%) - If the fuel level continues to drop in the daytank with the lag supply pump engaged and the tank level reaches 20%, the system will disengaged all pumps, the alarm will sound and the system will display a critical low level alarm condition.

Low Level Alarm (45%) - If the fuel level continues to drop in the daytank and the tank level reaches 45 %, the alarm will sound and the system will display a low-level alarm condition.

High Level Alarm (90%) - If fuel continues to rise in the daytank and the daytank level reaches 95%, the system will engage the return pump, sound the alarm and display a high level alarm. The return pump will remain engaged until the fuel level is reduced to 90%. Note: The system will function normally once the fuel level has return to 90%, however the high level alarm will remain until the system is reset.

High - High Level Alarm (90%) - If fuel continues to rise in the daytank and the fuel level reaches 100%, the high level float shall break on rise, the system will sound the alarm and display a high-high level alarm. The return pump will remain engaged until the fuel level reaches 90%, however the remote supply pump set will now be be locked out and the daytank supply solenoid valve will not open until the alarm condition is cleared and the system is reset.

Leak Detected - If the rupture basin leak sensor located in the daytank's rupture basin detects fuel, the system will sound the alarm and display a daytank rupture basin leak warning. The supply pump will be locked out and the daytank supply solenoid valve will not open until the alarm condition is cleared and the system is reset.