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Category Archives: Preferred Utilities

 

Be sure to check out Preferred Utilities’ contributing article to Today’s Boiler written by Robert Frohock, PE.

From 5 Things You Might Have Missed In NFPA-85″

“Reality isn’t always what you’d assume when it comes to boilers, their controls, and their plants. Several lesser-known aspects could prove useful, so take some time and crack the rest of the code.”

You can view the online version of the magazine by clicking this link (page 10).

Robert Frohock, P.E. is the engineering manager for Preferred Utilities Manufacturing Corp. (Danbury, CT). Find out more at www.preferred-mfg.com.

 

Danbury, CT — An extremely important, but often overlooked component of the back-up generator system is the Fuel Oil Delivery system. Like a silent sentinel, the fuel oil delivery system’s mission is to supply and constantly replenish diesel fuel to the generator day tank(s). It is therefore critical to perform regular maintenance and inspections in order to ensure reliability and trouble-free operation.

semi-automatic-pump-set

Semi Automatic Transfer Pump Set

The modern Automatic Fuel Oil Transfer Pump Sets, such as the Preferred Utilities Semi-Automatic Fuel Oil Transfer Pump Set, are state of the art systems which incorporate microprocessor-based controllers that monitor and control transfer pumps, return pumps, fuel tank level gauges, and tank leak detectors.

 

A typical system consists of a bulk fuel oil storage tank, duplex fuel oil transfer pump set (two 100% pumps, one for back-up) with control panel and fuel oil day tank(s).

In addition, many systems incorporate a fully automatic Fuel Oil Filtration system such as the Preferred Model PF to remove water, suspended rust, dirt and other contaminants in order to maintain the quality and purity of stored diesel fuel.

Fuel Oil Filtration Set - 2011

Preferred Model PF – Fuel Oil Filtration

Each component of the system requires a regular maintenance routine for optimum performance and longevity.

The optimum maintenance frequency would depend on the owner requirements, however the following is a suggested inspection and maintenance guidelines.  It is highly recommended to obtain a service agreement from the equipment manufacturer (if available) to perform maintenance at regular intervals. As always, refer to the manufacturer’s operation manuals for specific information on performing routine maintenance.

Weekly

Check Day Tank Fuel Level
Check Fuel Sentry Level Monitor for main storage tank
Check Storage tanks for water
Test Day Tank Level Switches
Test Automatic Pump System operation

 

Monthly

Check Pump set fittings and connections check for leaks
Check Pump set motor and pump mounts
Check Pump set strainer baskets
Check Fuel Oil Filtration set strainers and filters
Test All System Leak Detectors

 

Annually

Perform Complete Fuel Oil Handling System  Preventative Maintenance, Inspection and Systems Check
 

When thousands of exhibitors and visitors descended on New York City for the 2014 AHR Expo, many of them weren’t prepared for the sudden snow storm that blanketed the streets of downtown Manhattan.  Preferred Utilities, however, came well prepared–and stirred quite a buzz by bringing several big items to the big apple.

Preferred Utilities debuted its new Advanced Performance Inject-Air Low NOx Axial Flow Burner (API-AF). This burner includes Preferred’s first packaged burner unit for 4MMBTUH-20MMBTUH applications.

API AF outside

API-AF Burner

By producing an exceptionally stable flame at all firing rates, the API-AF offers the same high efficiency, low emissions, fuel variety, and ease of maintenance of the original API burner–just in a smaller, more robust package.

API AF inside

API-AF Burner (open)

Included in the API-AF package is the new BurnerMate Light controller. Boasting UL approval, the BurnerMate Light provides an economical, state-of-the-art microcomputer-based burner management system with built-in first-out annunciatior and combustion control for a single burner, boiler, or process heat application.

BurnerMate Light

BurnerMate Light

Preferred Utilities also made a splash with its new Waterproof Pumps – an innovation spurred by Hurricane Sandy. The flooding in areas like New York and New Jersey emphasized the need to rethink mission critical infrastructure. Preferred developed the Waterproof Pump to operate uninterrupted during flood events, ensuring the safe supply of fuel for emergency generators and boilers.

WP Waterproof Pump

 

 

Also at the show: Preferred’s new Fuel System Controller (FSC). The FSC is Preferred Utilities’ next generation programmable logic controller with features specifically designed for critical data center and health care backup generator fueling systems.  FSC controllers automate fuel oil pump sets, suction integrity test, leak detection monitoring, generator day tank level control, day tank return pumps, main tank filtration/chemical treatment skids, multiple main tank motorized selector valves, tank gauge integration, tank truck off-loading , and much more. The FSC distributed control architecture avoids common mode failures. Each FSC has an independent power supply, CPU and I/O . Multiple FSC controllers communicate over a masterless, electrically  isolated, dual redundant network.

If you need to rethink your mission critical strategy–or if you would like further information on any of these new products–please contact Preferred today!

(203) 743-6741

 

A year after Hurricane Sandy, engineers are rethinking designs for subterranean equipment. Preferred Utilities Manufacturing Corporation has created a solution that should limit the power outages that plagued mission critical facilities during the destruction of Hurricane Sandy. That solution is the waterproof pump.

Designed for areas in flood zones, the pump attaches to back-up generator equipment. The state-of-the-art submersible pump is designed to withstand complete submergence in water and continue uninterrupted operation.

The pump and its motor assembly are securely welded within the enclosure to ensure operation during full submersion. It also features flexible stainless steel hoses for pump suction and discharge connections, a flanged access door with gasket, a sliding tray for pump removal, maintenance, or repair, all of which are encapsulated in an epoxy-enamel painted steel enclosure.

  •     More Features:

o    Discriminating type leak sensors installed inside enclosure
o    External connections seal welded to enclosure for connection of field piping.
o    External connections seal welded to enclosure for electrical connections
o    Local non-fusible disconnect installed within the enclosure.

  •     Potential Applications:

o    Any facility where equipment is installed at or below historic flood levels and they cannot afford to lose electrical power generation.
o    Locations prone to flooding with backup power systems.
o    Hospitals, financial institutions, communication facilities, data centers.

Although Sandy weakened to a Category 1 hurricane by the time it struck New York and New Jersey, its storm surge caused massive flooding in streets, tunnels, and subway lines, resulting in lost power. While power losses were expected with a storm this large, many of the backup generator systems were not designed to operate under large amounts of water. The back-up generators failed under the immense amount of water, [leaving many important facilities without power, like the NYU Langone Medical Center.

If you need to rethink your mission critical fuel delivery strategy, don’t wait for the next storm–call Preferred today, or visit us at http://www.preferred-mfg.com

Preferred Utilities is the single-source umbrella for all mission critical needs. Services include customized engineering, consultation, installation, and scheduled maintenance.
Products include fuel oil handling systems, boiler equipment, burners, nuclear components, flow modeling services, and more. Our products can be found in commercial, institutional, industrial, and nuclear facilities.