Does anyone have experience retrofitting a HELLER oven to a lower voltage?

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We are looking at buying a used HELLER 1800 reflow oven. It... - Sep 24, 2015 by ProcEng1

Proc My field service back ground included Electrovert so... - Sep 26, 2015 by MPMENG

> Proc > > My field service back ground included... - Sep 28, 2015 by ProcEng1

Voltage retrofit require some wiring changes along with circ... - Sep 29, 2015 by Bilal

ProcEng1

#74612

Does anyone have experience retrofitting a HELLER oven to a lower voltage? | 24 September, 2015

We are looking at buying a used HELLER 1800 reflow oven. It is currently set up for 480v and our facility is 208v.

I know we can either get it retrofitted or buy a step up transformer.

Is retrofitting the machine simply moving a tap on the internal transformer, or is it very involved? Just trying to see if it's still cost effective. Thanks for any input.

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MPMENG

#74618

Does anyone have experience retrofitting a HELLER oven to a lower voltage? | 26 September, 2015

Proc

My field service back ground included Electrovert so I know reflow electrical quite well. I've worked on Heller, Conceptronic and Vitronics over the last few years and really there isn't a huge difference if you can read a schematic. I checked into this very same upgrade for one of my clients and it isn't to difficult, maybe a day or two of labor depending on the style of heaters. But it is more involved than tapping a transformer. In fact you would remove the step down transformer, change out all the heater zone circuit breakers to double the amp rating (16 to 32amp I believe) and then either jumper or reconfigure each heater assembly changing them from parallel to series or vise versa. I think the parts kit from Heller was about 4k, but you could probably buy breakers and save a lot of money. If you don't already have 480v in you building it is very expersive to add.

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ProcEng1

#74623

Does anyone have experience retrofitting a HELLER oven to a lower voltage? | 28 September, 2015

> Proc > > My field service back ground included > Electrovert so I know reflow electrical quite > well. I've worked on Heller, Conceptronic and > Vitronics over the last few years and really > there isn't a huge difference if you can read a > schematic. I checked into this very same upgrade > for one of my clients and it isn't to difficult, > maybe a day or two of labor depending on the > style of heaters. But it is more involved than > tapping a transformer. In fact you would remove > the step down transformer, change out all the > heater zone circuit breakers to double the amp > rating (16 to 32amp I believe) and then either > jumper or reconfigure each heater assembly > changing them from parallel to series or vise > versa. I think the parts kit from Heller was > about 4k, but you could probably buy breakers and > save a lot of money. If you don't already have > 480v in you building it is very expersive to add.

Thank you for the insight. This unit may prove to not be worth picking up. I am waiting on a quote for the conversion, but I'll keep your $4k estimate in mind.

Thanks

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Bilal

#74632

Does anyone have experience retrofitting a HELLER oven to a lower voltage? | 29 September, 2015

Voltage retrofit require some wiring changes along with circuit breakers replacement. Please contact serviceNJ@hellerindustries.com to get the retrofit quot.

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