SPECIFICATION FOR
STORED DIESEL FUEL QUALITY
MAINTENANCE SYSTEM
3-GALLON PER MINUTE (PLC VERSION)
GENERAL:
SYSTEM DESCRIPTION:
This section specifies the diesel fuel quality maintenance equipment for standby
diesel powered generator sets that operate in a critical environment and must
be available when needed.
INSTALLATION LOCATION:
System shall be installed on a concrete floor or pad convenient to a 15
Amp 110VAC power source to allow for plug-in or hard wire power connection.
Diesel fuel supply and return piping from bulk storage tank to quality
maintenance system are to be separate from piping for diesel engine and day
tank. Supply or pick up line from bulk storage tank is to be at bottom of tank
on one end, and return line is to be at top of tank on opposite end. The
quality maintenance system inlet shall not be more than 18 feet above the
bottom of the bulk stored diesel fuel container.
System supply and return lines are to be 3/4" black iron. Reducers, elbows, or other piping
restrictions are to be avoided where possible. The quality maintenance system
shall be located as close as possible to the bulk storage tank.
PRODUCT:
The quality maintenance system will consist of a metal framed cabinet
with hinged lid for ease of element replacement and a hinged front door to
facilitate servicing. Contained within the cabinet will be a filtration module
offering a centrifuge action, coalescing plate and one replaceable filter
element. The unit shall have a positive displacement pump powered by a heavy
duty 110/220 VAC, totally enclosed, fan cooled motor capable of continuous
operation.
Installation instructions and drawings showing outside dimensions of
metal cabinet, diesel fuel inlet and outlet pipe locations, water drain outlet
pipe, and location/length of electrical cord shall be supplied by the
manufacturer.
THE QUALITY MAINTENANCE SYSTEM SHALL INCLUDE AS A MINIMUM:
A. MAIN ON-OFF SWITCH - This switch connects 110VAC current to the system
and provides overload protection for the pump motor.
MAIN BREAKER - To protect the 110VAC system from overload.
SECONDARY FUSE - To protect the low voltage system from overload.
PLC AND REAL TIME CLOCK - To provide adjustable time cycle time and control
logic for the unit.
CONTROL VOLTAGE SECTION - To provide low voltage power to tank probes and
switching circuitry.
ELECTRICAL ENCLOSURE - All electrical switching and controlling apparatus
to be contained in a NEMA rated liquid tight enclosure.
WIRING - All primary wire to be 14AWG rated 600V THHN oil resistant. All
primary wiring exiting liquid tight enclosure to be encased in liquid tight
conduit. Secondary wiring to be minimum 20AWG 600V THHN oil resistant encased
in liquid tight conduit as required to maintain NEMA rating.
MOTOR/S - All motors shall be fully enclosed, ball bearing, and fan
cooled.
POWER SUPPLY CORD - 10 foot length S.O. 12AWG with external ground.
AUTOMATIC WATER DRAIN - A separate positive displacement pump and motor
with associated sensors and controls to remove accumulated water from bottom of
filtration canister and to pump the water to a user supplied holding tank.
PETCOCK VALVE - To relieve vacuum from filtration canister when replacing
filters.
EXTERNAL SELECTORS/S - To switch system on and off from outside control
panel and select either continuous manual operation or automatic timed cycle
mode.
EXTERNAL PILOT LAMP - To indicate system is in operation.
EXTERNAL WATER SENSOR ALARM - To alert personnel (audible alarm) should
water need draining.
PAINT COLORS - The frame, mounts, and filtration module should be painted
white; all panels and lid to be painted white.
DIMENSIONS - Viewed from control panel the cabinet shall be no more than
24" wide, 10" deep and 38" in height.
THE QUALITY MAINTENANCE SYSTEM SHALL INCLUDE THE FOLLOWING OPTIONAL
FEATURES:
MANUAL WATER DRAIN - The system shall be provided without the standard
automatic water drain feature and shall include a manual drain valve to remove
accumulated water from the bottom of the filtration canister.
VACUUM PRESSURE DIFFERENTIAL TRANSDUCER - shall be provided to alert the
user (audible alarm & warning light) that the filter elements need
replacing or that the flow of fuel through the system has been interrupted. The
actuation (set) point and the reactivation (reset) point each shall be
independently adjustable via the PLC. The switch will control electrical
circuits in response to changes in vacuum and or pressure.
STATUS AND ALARM PANEL - shall be provided to indicate the following
status and alarm conditions (1) PRIMARY PUMP IS IN OPERATION (2) AUTO DRAIN
PUMP IS IN OPERATION (3) CHANGE FILTER ALARM IS ILLUMINATED & SOUNDING (4)
HIGH WATER IN CANISTER IS PRESENT AND ALARMING. A terminal strip shall be provided
with normally open contacts that indicate the above four conditions by contact
closures.
LITERATURE - Two copies each of the operating instructions, diagnostics,
and parts list should be provided by manufacturer.
MANUFACTURER - Shall be Fuel Purification, LLC, 1208 West Marshall Street
Richmond, Virginia, USA 23220-3024 Telephone (804) 358-0125 Fax 804- 358-4200
All primary functional components to be manufactured by Fuel Purification, LLC.
CAPACITY - The system shall have the capacity to make two complete
changes of bulk stored diesel fuel per week of tanks ranging from 500 to 5,000
gallons in size.
EXECUTION:
Installation: the quality maintenance system should be received, stored,
installed and started up by _____________________ (name of local mechanical
contractor).
MEASURE AND PAYMENT:
Basis: Compensation for product specified in this section will be made in
the following manner:
Product: Manufacturer’s invoice amount on delivery to job site of
product.
Installation: On completion of installation - per contract.