CITY OF NEW HAVEN, CONNECTICUT



TOWN OF NORTH BRANFORD, CONNECTICUT

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STANDARD OPERATING GUIDELINE

FOR USE OF THE

20KW EMERGENCY POWER LIGHT TOWER

OVERVIEW

The Town of North Branford has placed into service an Allmand EPL-20W “Night Fighter” combination emergency power/light tower which can be utilized to provide supplemental scene lighting during night time operations as well as to provide electrical power (60Hz, 120/240 volt single phase); the unit is capable of producing a continuous power output of 20 KW. Presently, the light tower is stored at the Public Works garage and can be transported by any vehicle with a pintle type trailer hitch assembly. This asset is part of the Town’s Homeland Security Grant Program equipment cache; contiguous jurisdictions have placed into service identical units.

DESCRIPTION

Lights and Ballasts:

The light assembly consists of four (4) super high output lamps that have tempered glass lens, an aluminum reflector and a lamp tie support device to prevent damage from shock and vibration. Each fixture contains one (1) parallel mounted 1250 watt BT-37 Metal Halide lamp rated for a minimum of 110,000 lumens. Lamp ballast can be switched individually and are protected by circuit breakers. The lighting unit consists of: four (4) 1250 watt Metal Halide SHO lights, Light Sequence Commander LSC 1000 (light tower control system) and, a powered cord reel and 120/240VAC power distribution box including 200 feet of cord. Lamp fixtures are fitted with Saf-T-Visors enabling the direction of light.

Mast Assembly:

All functions of the mast erection are accomplished utilizing an electrically operated single winch system for raising and lowering the tower. When fully extended, the vertical mast/light assembly can be positioned approximately thirty feet above ground level. When in the lowered position the unit is positioned approximately 6 feet from a horizontal plane. The light assembly can be rotated 360° from ground level without lowering the mast. The mast is equipped with a bi-directional automatic cable reel to distribute and retract the electrical cable as the tower is raised or lowered. The mast is secured in the towing position (lowered) by a captive locking pin and in the operating position (vertical) by a sliding lock on the mast that engages a corresponding slot on the trailer frame. The mast assembly includes a three-section chrome plated tower complete with fixture yokes, tower rotating section and rear tower support.

Engine and Generator:

The liquid-cooled diesel engine is a four-cylinder Isuzu 4LE and operates at 1800 RPM; generator output is 60Hz, 120/240 volt single phase capable of producing a power output of 20 KW. A separate lockable compartment on the rear panel of the trailer consists of one 125VAC-15A GFCI duplex, one 125VAC-20A GFCI duplex, one 250 VAC-15A twist lock, one 250VAC-20A twist lock and one 250VAC-50A receptacle. All receptacles have circuit breaker protection. A non-corrosive spark resistant 50 gallon diesel fuel tank is affixed to the trailer and is provided with all connections to ensure efficient and continuous operation of the generator and lighting system.

Towing Information

A towing hitch is of the adjustable height type, reversible combination, 2 inch ball coupler / 3 inch pintle eye. The trailer is equipped with a fully wired running light system and pigtail connection to be used during towing operations. The trailer utilizes a four point design for stabilization of the unit; two retractable chrome outriggers with leveling jacks are stored on each side. An additional leveling jack is located on the trailer drawbar and on the rear of the trailer. When properly set up, the fully extended mast/floodlight assembly shall remain operational in wind gusts of up to 65 miles per hour.

GENERATOR/LIGHT TOWER OPERATIONS

Stabilization

The unit shall be securely attached to the pull vehicle using the combination ball coupler/pintle hitch and safety chains. The wiring harness for break and signal lights shall be connected to the pull vehicle. Upon arriving at a scene, the trailer should be positioned on a level grade and the unit disengaged from the pull vehicle. The two side outriggers shall be fully extended, locked into position and the leveling jacks engaged to stabilize the unit. The front and rear leveling jacks shall also be lowered into position.

Power Up Procedures

Open the lift up engine compartment door to access the control panel; for normal operations follow the printed instructions listed on the inside of the door. In summary, place the earth grounding rod into position and attached the green wire to the grounding lug. Next, place the Start Switch into MANUAL and the Power Switch to ON; the engine will automatically start. During daytime operations the photo eye detector shall be OFF. However, during night time or extended use, the automatic timer can be set to for use with the photo eye sensor. Once the engine is operating, activate the quartz light on the tower and follow the instructions for releasing and elevating the light mast. Be sure to lock the mast into the vertical position the turning the knob counterclockwise. Once positioned, the mast can be rotated 360° by releasing the turn knob on the mast assembly. Each light has an individual control switch on the electrical panel; positioning of the lamp fixture is done manually and must be completed before elevating the mast. Lights must always be turned off before shutting down the engine and the lamp fixtures shall always face up when in storage. The remote electrical box can be activated by the appropriate switch in the rear access panel; main circuit breakers are also located in this area. (Refer to photos below)

Placement

The light tower/generator should be placed in a location which is free from recognized hazards. Most importantly, when setting up the light tower, never place the elevated mast in the area of overhead electrical wires. A good practice to follow is to employ a “spotter” during positioning. The use of traffic safety cones and or fire line tape to establish a perimeter around the unit is highly recommended.

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Photo 4: With the side door open, access to all controls is possible. To start the engine, place the AUTO/MAN Switch to MANUAL and the Power Switch to ON. The motor will start automatically. The light switches and photo eye and timer are also in this area. Turn Power Switch to OFF for shutting down.

Photo 3: Secure the grounding rod into the earth and attach the green wire to the grounding lug nut.

Photo 2: Open the side engine compartment cover to access engine and light controls. The grounding rod is stored in this area.

Photo 1: Once positioned, the side stabilizers shall be extended and lowered and the front and back stabilizers shall be lowered into position.

Photo 5: With the tower in the horizontal position, release the locking device while raising the mast from its bedded position

Photo 6: When the mast is in the vertical position, turn the locking knob (bottom) counterclockwise to secure the mast to the unit. In order to rotate the mast 360°, release the (top) locking knob and when in the required place, tighten the knob. Note: Reverse action for lowering mast assembly.

Photo 7: When lowering mast assembly release locking mechanism and be sure to tighten rotation knob with lamp fixtures facing forward.

Photo 8: When the light tower assembly is fully extended a height of approximately 30 feet is reached. The position and direction of each lamp must be attained prior to elevating the mast.

Photo 9: A 200 foot power cord and electrical distribution box is mounted on the front drawbar of the unit; circuit breakers are in the rear access panel.

Photo 10: When lowering the lighting mast, be sure the mast lock is secured into position.

Photo 11: When lowering the lighting mast, be sure the mast is locked and stored in the horizontal position with lamp fixtures facing upward.

Photo 12: Combination ball and pintle hitch assembly with electrical harness. Note: Front stabilizing jack can be seen on the foreground.

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