Author Topic: Some problems with a Shandon embedding unit (HistoCentre 2)  (Read 7964 times)

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Yvan

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Some problems with a Shandon embedding unit (HistoCentre 2)
« on: March 16, 2009, 09:21:04 AM »
Hi all,

I'm new to this forum and I'm really impressed with the knowledge availlable here. Perhaps some of you can help me with a few issues I have...

I recently bought a second hand Shandon HistoCentre 2 and I have some minor
problems with it:

1. The hotplate of the unit only warms to about 52C with T regulation in
it's highest setting. As I use a paraffin with MP 56C - 58C (Carl Roth
Rotiplast) it would be nice to have a hotplate that will keep my molten
paraffin somewhat hotter. Any suggestions on a solution for this? Is there
an internal regulation or a known tweak to solve this?

2. Something very odd: the electronic valve of the paraffin dispenser is
kept warm by a few resistors mounted on it. It works fine. The outles
itself, meaning the small external piece of piping protrubing from the
machine were the paraffin leaves isn't, except for the heat produced by two
tiny lightbulbs, intended to lighten the hotplate.

As I experenced this morning, this means: no light, nada paraffin! Really! I can't imagine that such expensive equipment depends on the action of 2 cheap lightbulbs! Or am I missing something, here? That is I suppose, except for the price of the
bulbs Shandon will charge...

As I am not a professional user, I don't have easy access to Shandon/Thermo/Fisher... or whatever it's called this week, technical support.

Thanks in advance for your advice!

Y.

Some problems with a Shandon embedding unit (HistoCentre 2)
« on: March 16, 2009, 09:21:04 AM »

Yvan

  • Guest
Re: Some problems with a Shandon embedding unit (HistoCentre 2)
« Reply #1 on: March 28, 2009, 06:28:16 AM »
Problem solved: after opening the unit and measuring some things, it turned out that one of the heaters of the hotplate was dead.

As those seems to be some kind of cemented propriatory heaters made for
this unit (and no identification whatsoever...), I replaced the dead heater with a regular 1000 Ohm/50W power resistor.

As to the electronic valve of the paraffin dispenser: it seems that the warmth distribution in the embedding unit has been calculated that way, that everything, including the paraffin valve, works just fine if all temperature controls (hotplate, wax reservoir, storage cabinets) are set to the *right* temperature, given the MP of the wax used.

If anyone here would happen to have an instruction manual for the Histocentre 2, I would be very gratefull for a xerox/PDF copy. Of course I'm willing to pay the costs!

Yvan.

Yvan

  • Guest
Re: Some problems with a Shandon embedding unit (HistoCentre 2)
« Reply #2 on: April 03, 2009, 05:12:51 PM »
Thanks to those who responded. The manual is underway.

0050989s

  • Guest
Re: Some problems with a Shandon embedding unit (HistoCentre 2)
« Reply #3 on: February 03, 2011, 08:45:36 AM »
COuld I please have a copy of the manual also

Re: Some problems with a Shandon embedding unit (HistoCentre 2)
« Reply #3 on: February 03, 2011, 08:45:36 AM »