Corning Pc 351 Manual
Division Corporate Office: USA and Canada Corning Incorporated Life Sciences 45 Nagog Park Acton, MA 01720 1 (800) 492-1110 Tel: 1 (978) 635-2200 Fax: 1 (978) 635-2476. Standard Series Advanced Series Instruction Manual Hotplates, Stirrers, Hotplate-Stirrers.
Corning Pc 351 Specifications
Jul 08, 2003 Corning PC-351 Repair I recently retrieved a Corning PC-351 hotplate/stirrer that I have not used in several years from a location where it unfortunately sat in standing water for perhaps a year and a half. Stir function is not working on my corning PC-351 hotplate/stirrer I bought this on eBay the the stir function came - Corning PC-351 stirrer hotplate question. Corning PC- 3. Hot Plate Stirrer. Contact Corning PC Control Board customer service. Instruction Manual - For All Hot Plates, Stirrers, and Stirrer/Hot Plates with Digital Displays and for the 6795PR Temperature Controller.
Posts: 2998 Registered: Location: Western Hemisphere Member Is Offline Mood: Corning PC-351 Repair I recently retrieved a Corning PC-351 hotplate/stirrer that I have not used in several years from a location where it unfortunately sat in standing water for perhaps a year and a half. I managed to get the magnet to rotate and replaced the terminals on the heating element, but it is just not heating. The heat indicator light comes on but is a bit patchy and the surface of the hotplate does not warm up. A voltmeter across the two hotplate connections with the hotplate on high reads about 5.5 volts, AC when the heating element is on (at all powered-on settings) and 0 when it is off. I would like to fix it in the easiest and cheapest way possible. It's a very popular model. Has anyone repaired one of these before?
Posts: 2702 Registered: 12-3-2004 Member Is Offline Mood: ' I think we are all going to die. I think that love is an illusion.
We are flawed, my darling'. Previously: Is there an open circuit when you check for continuity across the heating element? (measure the resistance with heating element disconnected from rest of apparatus, power disconnected too-) Trouble shooting is fairly simple- Start at line in, and follow the voltage until you find the problem. If the element is good, problem will PROBABLY be a bad switch or connection.
Rapopart’s Rules for critical commentary: 1. Attempt to re-express your target’s position so clearly, vividly and fairly that your target says: “Thanks, I wish I’d thought of putting it that way.” 2. List any points of agreement (especially if they are not matters of general or widespread agreement). Mention anything you have learned from your target. Only then are you permitted to say so much as a word of rebuttal or criticism.
Anatol Rapoport was a Russian-born American mathematical psychologist (1911-2007). Posts: 104 Registered: 5-4-2013 Location: USA Member Is Offline Mood: No Mood I have a PC-351, and I dismantled it to take a look inside. Tp link key generator android. 
I verify that the heater has a resistance of around 25 ohms, but 5.5 volts input to the heating element is much too low. My heater gets close to mains voltage, around 120 volts.
Also, I doubt that component on the heating selector is a simple triac. If you listen closely while the hotplate is on, you will notice that it turns the heater on for a few seconds, turns it off for a few seconds, and repeats this cycle. It is this variable duty cycle that adjusts the temperature output. I was unable to locate any datasheet for this component, as it is decades old, at least in my case. The code on mine is 8424H. I assume this has a mechanical switch/relay type component inside, because of the audible clicking. If you are able, I suggest opening up this part and cleaning/de-rusting the switch contacts inside.
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This might fix the low voltage output and restore the hotplate to a fully functional condition. Posts: 2998 Registered: Location: Western Hemisphere Member Is Offline Mood: Quote: I have a PC-351, and I dismantled it to take a look inside. I verify that the heater has a resistance of around 25 ohms, but 5.5 volts input to the heating element is much too low. My heater gets close to mains voltage, around 120 volts. Also, I doubt that component on the heating selector is a simple triac. If you listen closely while the hotplate is on, you will notice that it turns the heater on for a few seconds, turns it off for a few seconds, and repeats this cycle. It is this variable duty cycle that adjusts the temperature output.
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