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ACOS

I am having trouble removing the front plate on a Newlec / Horstmann 425 Programmer. There is a backplate that has all the connections to it and a front plate with the timer control switches. I think it hinges or pushes into the connector on the back plate but am not sure. The later version seems to have two screws that retain the top of the f ront plate but this one has none visible.
 
I am having trouble removing the front plate on a Newlec / Horstmann 425 Programmer. There is a backplate that has all the connections to it and a front plate with the timer control switches. I think it hinges or pushes into the connector on the back plate but am not sure. The later version seems to have two screws that retain the top of the f ront plate but this one has none visible.


"Hello ACOS",


I have only seen the Horstmann 425 Programmer model that has 2 Screws on the Top which when undone allow the Programmer to hinge down from the Backplate - You mention that you know about these and that they are a Later Model than You have.


Can you actually See the Top of the Programmer ?


I have noticed in the past that Horstmann used to manufacture [have manufactured] Timeswitches and Room Thermostats where you had to actually Insert something into a couple of Slots which contained `Lugs` which had to be Pushed Down to disengage them from these Slots - at the same time removing the Thermostat / Timeswitch from the Backplate.

An example of this that still exists is the Horstmann DRT2 Programmable Room Thermostat - although it is simple enough to do when you know where the `Lugs` are - there is always the risk that you might break of these `Lugs` or one of them - it really is a Bad Design.

I would suggest that You try to see the Top of the Programmer as it can be easy to miss these indentations with just a finger - as they are usually so close to the Wall - and the `Lugs` almost fill them up.

I usually try the Top of a Biro Pen to start with [or 2 of] - if that will not push down the `Lugs` enough to release the Programmer / Room Thermostat a Screwdriver will - Gently.

This will obviously only be of any help IF You have NOT been able to actually SEE the Top of the Programmer - in that case I would imagine that what I described will be the answer - ?


Sorry that I did not see / reply to your Post sooner.


Regards,


Chris
 
Chris

Thank you very much that is a great help. It is possible that I have missed the two screws or lugs as you suggest.
 
Chris

Thank you very much that is a great help. It is possible that I have missed the two screws or lugs as you suggest.


"Hello ACOS",


You are welcome - If the Programmer is fairly High on the Wall or in a slightly inaccessible [By Steps] position it is easy to be frustrated by something as simple as this.

That is why I stated that this design was a Bad one - these `Lugs` can be awkward when you Can locate them easily ! - even if there are Screws these are sometimes tricky to get a Screwdriver onto if you cannot see them.

Good Luck in finding them and removing the Programmer.


Regards,


Chris
 
Hi Chris
Juts wanted you to know hat I found the two screws and hinged the old programmer out OK. It was just a faulty timer clock and the new unit fitted straight into the original back plate. All ow working OK - thanks again ... Alan
 
Hi Chris
Juts wanted you to know hat I found the two screws and hinged the old programmer out OK. It was just a faulty timer clock and the new unit fitted straight into the original back plate. All ow working OK - thanks again ... Alan



"Hello Alan",


Glad to have helped - I only saw your Post / Message Today - Saturday 11th - Thanks for letting Me know that you found the screws and managed to remove the Programmer.


Regards,


Chris
 

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