Electronics Forum | Tue Dec 16 09:01:52 EST 2003 | tds
What model is your Hollis? Does it have the coil heater?
Electronics Forum | Tue Dec 16 21:17:48 EST 2003 | Peter
Maybe you fixture is too large for your product. If so, please redesign your fixture
Electronics Forum | Wed Dec 17 06:50:51 EST 2003 | ex maintain leader
140..155 degrees celsus the limit is your inserted component temp schock tolerance
Electronics Forum | Tue Dec 16 11:39:33 EST 2003 | davef
Sounds like your preheat temperature controllers are out of adjustment. Check your operating manual for instructions.
Electronics Forum | Fri Dec 19 16:58:47 EST 2003 | rontdc
Kev, If I remember correctly, Hollis used calrod preheaters on that machine and they had a reflector under the elements to reflect the radiant waves back to the PCB. You might want to clean the reflector. If it is too far gone, use some Reynolds Wr
Electronics Forum | Tue Dec 16 14:26:33 EST 2003 | russ
Has anyone possibly moved the location of your thermocouples? if not check the calibration of your temp controllers/ thermocouples. Russ
Electronics Forum | Wed Dec 17 14:39:18 EST 2003 | Dean
How do you know your profiler is correct? Do you have a pyrometer you can verif the PCB temp with?
Electronics Forum | Wed Dec 17 18:56:02 EST 2003 | Chandler
Kev, You seem to have a very good knowledge of your process and can convey it clearly and precisely. My advise to you is to dis-regard the BS most of these guys churn out and follow your own gut. They will ask a s**t load of irrelevant Q's in some fu
Electronics Forum | Tue Dec 16 15:43:50 EST 2003 | patrickbruneel
Kev, I looked up records of various hollis machines with 3 preheat zones. and with progressive preheat temp. of 300 400 and 500 with a speed of 3.5ft/min the topside board temp was 120C before entering the wave. the preheat elements were infrared. W
