Be sure to cut off power to the lamps before working with them for safety reasons. When a bulb begins to fail, it is off for about 10 percent of the time and increases to about 80 percent of off-time before it fails completely. … ballast. If it is, use a meter capable of measuring the power factor of the lamp, such as the Kill-A-Watt meter (about $30). Wait about 10 minutes to see whether the light illuminates. High-pressure sodium lamps (also known as HPS Lamps or HPS lights) are a type of sodium lamp that is widely used in industrial lighting and many public outdoor areas. If the light does not come on, the photocell is defective and needs replacing. AgeOld bulbs fail by cycling on and off. Place a new bulb in the fixture and tighten it in a clockwise direction. Metal halide lamps do not require an ignitor to start, so the test for a failed ignitor for an HPS lamp is to screw in a metal halide bulb of the same wattage and see if it starts. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.. Two varieties of such lamps exist: low pressure and high pressure.Low-pressure sodium lamps are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting, such as street lamps, where they are widely used. Copyright © 2020 PARsource - Commercial Greenhouse Lighting Solutions. In high pressure sodium, the dark gettering material in the neck of the bulb near the base will turn white or disappear. These lamps reduce growth and increase electric consumption. High pressure sodium ballasts for lamps provide stable current use of the inductive reactance of the ballast, and other pipe lit work. While upgrading to LED provides a lot of benefits, high pressure sodium (HPS) lamps still provide some of the most efficient lighting available. The door will make an audible snapping noise when it closes fully. High-pressure-sodium lamps and metal-halide lamps do not exhibit obvious symptoms when power is off. Twist the wire nut counterclockwise while pulling it out to remove it. In lighting, the higher the wattage, the higher the light output. In fact, they're roughly as efficient as LEDs in terms of their light output for each watt of energy used. 2. If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced. Observe the sodium bulb for darkness inside or breakage. Five to 10 percent of the HPS lamps we’ve purchased in the past 25 years have had partially failed capacitors. These lamps … I purchased and installed a new 100-watt high-pressure sodium lamp (and left the new sensor in) and it was like a new light … … Close the fixture door. A less common problem is failure of the ignitor. Sodium Lamps were first produced commercially by Philips in Holland in 1932. With your hand, press the fixture lock on the side of the fixture and swing the door open. High pressure sodium continued If water is the culprit, why then the center light stays eluminated and the left and right mounted lights from center are the only lights turning off and on. Look for broken arc tube or loose metal parts. Place a small cardboard box over the photocell eye so the box rests on the top of the fixture. A magnetic ballast, in series with an AC current voltage source, supplies the lamp with a near-constant stream of current.Sodium ballast lamps are widely used in streetlights and security lighting, as well as applications requiring high color rendering. Fixtures with partially failed capacitors have a power factor of 0.70 to 0.80. The power factor of a normally functioning lamp with a new bulb is 0.97 to 0.98. Common high intensity discharge light wattages used for parking lot and area light fixtures range from 100 watts to 1000 watts. Sunlite 03620-SU LU150/MED High Pressure Sodium Light Bulb, 150 Watts, ED17/MED, Medium Base (E26), ANSI Code S55, 15000 Lumen, 20000 Life Hours, Clear, 2100K 4.3 out of 5 stars 287 $13.91 $ 13 . HPS bulbs should last four to six years, depending on the number of on/off cycles and hours of use. Sunlite 03620-SU LU150/MED High Pressure Sodium Light Bulb, 150 Watts, ED17/MED, Medium Base (E26), ANSI Code S55, 15000 Lumen, 20000 Life Hours, Clear, 2100K 4.4 out of 5 stars 424 $15.99 $ 15 . A very first appearance at a circuit diagram could be confusing, however if you could review a subway map, you can check out schematics. A box from a macaroni-and-cheese kit or other dinner side dish works well. The fixture lock may be on either side of the fixture depending on the brand and model of light. Wrong Ballast Some other critical factors at play here are things like: the size of the area … Turn off the power to the light at the switch or breaker box to prevent burns. Remove the bulb by turning it in a clockwise direction. High-pressure sodium lamp based ballasts are a great way of limiting or controlling the amount of input that is consumed by the lighting installation of high-pressure sodium lamps it's fixed to. An outdoor sodium light that does not illuminate may have a faulty bulb, wiring inconsistencies or need a replacement photocell. Confirmation of a partially failed capacitor can be made by measuring it with a capacitance meter ($20 to $80). Capacitors also can partially fail. They are commonly used in public parking lots, roadways, and other security areas. The HPS light fixture was developed by General Electric and made its debut in 1964. High Pressure Sodium Flood Light General Purpose Outdoor HPS by Lithonia Lighting. This action enacts the transformer to illuminate the bulb as it does at dark. Place a ladder or step stool near the light, if need be, to acquire height to reach the light fixture. Turn off supply voltage at breaker before accessing fixture Wiring Compartment. Provides focused illumination for outdoor use in residential and light commercial applications. Check the wire nuts connecting the electricity to the light. High pressure sodium bulbs ("lamps") are an old standby for lighting that's still used today in spite of so much talk of LED lights. Placing a cardboard box over a photocell eye blocks light from the eye to trick it into assuming it is dark. Defective Ballast High-pressure sodium lamps are widely used in greenhouse production, but they require maintenance for peak efficiency. This meter must be connected in line with the lamp, and the light should be at full brightness before you take the measurement. I'd try cleaning the sensor with a damp cloth and see if that gets you going again. A big driver behind their use is their… high pressure sodium ballast output voltage use high pressures of sodium, in an excited state, to generate light. This will eliminate any visual or connection issues with your high-pressure sodium ballast. If you’re not electrically inclined, work with your lighting manufacturer or an electrician to diagnose problems and replace component parts. Check the porcelain holder for any signs of deep cracks or breaks. Ballast for the lamp to provide a high starting voltage, lamp conduction. Let the light cool for about 20 minutes. Ballast replacement kits cost $130 to $150, and it can be cost effective to replace the ballast rather than purchase a new lamp. All Rights Reserved. 3. I have a high pressure sodium vapor lamp that is going onand off. After visual inspection, many growers find that some lamps in their greenhouse either aren’t operating or aren’t doing so at full brightness. This failure cannot be measured with a standard volt-ohm meter. It this doesn't correct the problem, then the sensor would need changing. Hold a wire junction in one hand. high pressure sodium light fixture troubleshooting, has power but light bulb doesn't come on? An ignitor is used when high pressure is necessary to strike an arc through certain materials and get the temperature up very quickly inside it. Like Metal Halides, High Pressure Sodium lights are omnidirectional, which wastes light and makes them less efficient. How to repair 1000w High pressure sodium discharge light. Cover the eye with any other thick material to block light for this test. Replace lamp. First, ensure that the lamp is receiving the desired voltage. Turn off the power to the light at the switch or breaker box to prevent burns. If the tube is black, the bulb is definitely burned out. High Pressure Sodium Applications HPS lamps, unlike most metal halides, do not require enclosure except to prevent moisture from accumulating on the lamp. So a higher wattage light is going to give you more light on your specified area than a lower wattage light. A leak in the outer bulb will cause oxidation of the metal parts inside. If the capacitor is enlarged, it has failed and needs replacement. Grasp the wire nut with the other hand. Petaluma CA 94954       P: 855-727-5483 | F: 877-262-6050 |  Email Us. If you’ve invested in the lamps, you should be sure they are running effectively. Place a ladder or step stool near the light, if need be, to acquire height to reach the light fixture. If screwing in a new bulb does not solve the problem, the lamp must be taken down and disassembled. Outdoor sodium lights are either low-pressure or high-pressure lighting to illuminate large areas with bright light. Review the accessories on your lamp. Observe the interior gas tube for any signs of discoloration. high pressure sodium ballast wiring: 1. Pull out your owner's manual to make sure the accessories are appropriate for your lamp. I will still blow the water out of the conduit and try this but don't comprehend the center light without malfunction if water being the culprit. Failed CapacitorThe second most common failure is the capacitor. light fixture high pressure sodium, I've change 3 different light bulbs, but non of them comes on, tester sounds that has power. Visually inspect the lamp for proper connections and contacts. Refer to wiring diagram on ballast label for proper component connections (typical connections illustrated above). If the MH lamp starts and a new HPS lamp does not start, the ignitor probably needs to be replaced. The most common problem with a high pressure sodium light is the bulb. Clean any corrosion off connections with a wire brush, twist the wires together and replace the wire nut. Ideal for walkways, yards, patios, play areas and driveways creating an inviting exterior … HPS lamps may be dim if the supply voltage is low. 4. 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