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#1
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garage door not closing
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#2
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garage door not closing
On Sat, 20 Dec 2008 16:42:40 -0700, Tony Hwang wrote:
wrote: My gargae door started not going down all the way a few days ago but not all the time. Last night I tried to adjust the lasers on each side now it doesn't go past the bend at the top of the track. Where are the lasers supposed to point toward. And should there be a green light on each side? Hi, I think it is IR emitter and senor pair. You have to align the IR beam to the sensor. You watch the sensor output with a multmeter.while adjusting the emitter position. When it is adjusted right, the sensor will give highest output. I use an IR detector card to make this task easy. Stick the card on the sensor and when the beam is aligned, you'll see red dot on the card sensing area. I bought this card from electronics parts store. Nobody uses a meter. You simply look at the LED at the receiver and aim the emitter until the receiver's LED lights up. It is a safety measure to keep the garage door from coming down on some kid's head. It has nothing to do with track alignment. Most likely, there's a bent track or problem with the counterspring. |
#4
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garage door not closing
On Sat, 20 Dec 2008 18:04:08 -0700, Tony Hwang wrote:
AZ Nomad wrote: On Sat, 20 Dec 2008 16:42:40 -0700, Tony Hwang wrote: wrote: My gargae door started not going down all the way a few days ago but not all the time. Last night I tried to adjust the lasers on each side now it doesn't go past the bend at the top of the track. Where are the lasers supposed to point toward. And should there be a green light on each side? Hi, I think it is IR emitter and senor pair. You have to align the IR beam to the sensor. You watch the sensor output with a multmeter.while adjusting the emitter position. When it is adjusted right, the sensor will give highest output. I use an IR detector card to make this task easy. Stick the card on the sensor and when the beam is aligned, you'll see red dot on the card sensing area. I bought this card from electronics parts store. Nobody uses a meter. You simply look at the LED at the receiver and aim the emitter until the receiver's LED lights up. It is a safety measure to keep the garage door from coming down on some kid's head. It has nothing to do with track alignment. Most likely, there's a bent track or problem with the counterspring. Hi, You funny, I said light of beam alignment and where the track alignment comes from? Using a meter is more accurate. Peak reading means good near 100% alignment. Read the original post. |
#5
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garage door not closing
On Sat, 20 Dec 2008 18:04:08 -0700, Tony Hwang
wrote: AZ Nomad wrote: On Sat, 20 Dec 2008 16:42:40 -0700, Tony Hwang wrote: wrote: My gargae door started not going down all the way a few days ago but not all the time. Last night I tried to adjust the lasers on each side now it doesn't go past the bend at the top of the track. Where are the lasers supposed to point toward. And should there be a green light on each side? Hi, I think it is IR emitter and senor pair. You have to align the IR beam to the sensor. You watch the sensor output with a multmeter.while adjusting the emitter position. When it is adjusted right, the sensor will give highest output. I use an IR detector card to make this task easy. Stick the card on the sensor and when the beam is aligned, you'll see red dot on the card sensing area. I bought this card from electronics parts store. Nobody uses a meter. You simply look at the LED at the receiver and aim the emitter until the receiver's LED lights up. It is a safety measure to keep the garage door from coming down on some kid's head. It has nothing to do with track alignment. Most likely, there's a bent track or problem with the counterspring. Hi, You funny, I said light of beam alignment and where the track alignment comes from? Using a meter is more accurate. Peak reading means good near 100% alignment. And there is a VERY strong chance the "safety eye" is NOT the problem. More likely the overcurrent trip or the limit switch. The overcurrent trip will come into play if there is any binding |
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