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Discuss Stuck lift in the Electrical Forum area at ElectriciansForums.net

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Afternoon

An old lift has gone down but wont come back up :)

Basically there is a lift, made by Evans Lifts Ltd Leicster, probably 1960's era im guessing
it is a goods lift and has a sliding lattice door that you have to pull across before it will move from one floor to another.

Someone was using the lift and is not sure whether they slid the door across correctly. but basically the lift wont move now.

Has anyone got any ideas. is there something wrong with the door contact??

the photo below is of the controls if that helps. it is currently stuck at the basement floor

IMG-20200324-WA0013.jpg
 
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If the doors weren't shut correctly it shouldn't have moved in the first place. I assume you have tried opening and shutting the doors a few times.
 
  • Thread Starter Thread Starter
  • #3
If the doors weren't shut correctly it shouldn't have moved in the first place. I assume you have tried opening and shutting the doors a few times.
Yes that is what i thought. yes the doors have been opened and shut a few times. it has both phase and neutral and the supply has been turned off and on again...
Problem is im not there - just a worker at the shop doing tests for me :)
 
  • Thread Starter Thread Starter
  • #5
Possible the safety circuit has locked it out you would need to be on site.
Yes that is what i am thinking. There is an emergency red mushroom switch but has been reset. what kind of safety circuit would a lift this old have??
 
Depends on whether the original system is in place or has been upgraded. You have door interlocks, speed limiters, shaft interlocks, maintenance switches etc... Any one of these will prevent operation, do you have experience with lifts.
 
Afternoon

An old lift has gone down but wont come back up :)

Basically there is a lift, made by Evans Lifts Ltd Leicster, probably 1960's era im guessing
it is a goods lift and has a sliding lattice door that you have to pull across before it will move from one floor to another.

Someone was using the lift and is not sure whether they slid the door across correctly. but basically the lift wont move now.

Has anyone got any ideas. is there something wrong with the door contact??

the photo below is of the controls if that helps. it is currently stuck at the basement floor

View attachment 56552
Make sure the lift door and all the landing doors are completely shut.
Some gate locks have a double action .Make sure they are completely shut without gaps. If you have access to the lift control room check for tripped breakers , double journey relay , and phase failure. Good luck!
 

Pete999

-
Arms
Esteemed
Afternoon

An old lift has gone down but wont come back up :)

Basically there is a lift, made by Evans Lifts Ltd Leicster, probably 1960's era im guessing
it is a goods lift and has a sliding lattice door that you have to pull across before it will move from one floor to another.

Someone was using the lift and is not sure whether they slid the door across correctly. but basically the lift wont move now.

Has anyone got any ideas. is there something wrong with the door contact??

the photo below is of the controls if that helps. it is currently stuck at the basement floor

View attachment 56552
No, other than time for some in debth fault finding.
 
Yes that is what i am thinking. There is an emergency red mushroom switch but has been reset. what kind of safety circuit would a lift this old have??
The safety circuit in a lift of this era was simply a chain of series contacts and e-stop switches . Without a drawing you would be lucky if you found where it was broken.
 

Pete999

-
Arms
Esteemed
The safety circuit in a lift of this era was simply a chain of series contacts and e-stop switches . Without a drawing you would be lucky if you found where it was broken.
Logical testing should find the problem?
 
  • Thread Starter Thread Starter
  • #13
Depends on whether the original system is in place or has been upgraded. You have door interlocks, speed limiters, shaft interlocks, maintenance switches etc... Any one of these will prevent operation, do you have experience with lifts.
Yes ok. i would have thought it was something to do with the door interlocks.
No, im afraid i dont have much experience with lifts. hopefully this will give me some experience :)
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The safety circuit in a lift of this era was simply a chain of series contacts and e-stop switches . Without a drawing you would be lucky if you found where it was broken.
Yes ok. i know that there is a drawing in the control box, i will see if i can get a photo of it.
 
Aside from doing some routine checks as in #7 I would keep clear, lift shafts are dangerous environments if you don't have knowledge of the system and safety precautions.
 
  • Thread Starter Thread Starter
  • #15
Aside from doing some routine checks as in #7 I would keep clear, lift shafts are dangerous environments if you don't have knowledge of the system and safety precautions.
Yes ok. I accept your advice. to be clear, this is a goods lift, with control gear in an adjacent room, so it is safer than some lift gear :)
However, i agree that lifts are dangerous things.
 
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