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Forums13
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Posts36,957
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Most Online117 Jan 16th, 2020
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#13199 - 01/11/15 01:18 AM
Re: Hydro Problems
[Re: WorkingSuper]
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Joined: Aug 2011
Posts: 563
uppo72
addict
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addict
Joined: Aug 2011
Posts: 563
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That's exactly what is is. Model: HMC-1000-PHC
I just talked to the tech and he says he doesn't think it has anything to do with the shoe because he said if it was, the car would shake a lot and he said it looks like it's in pretty good condition.
He said the problem is the elevator loses direction even though they set it yesterday. When the elevator starts, he said it starts too sharp. He's going to replace a tiny valve within the valve and he thinks this might be the problem.
He also said that although this isn't urgent, we should change the oil (elevator is under 5 years old) because the color doesn't look right and it looks dirty. This loss of direction sounds like the level/pausing fault and not the safety gear fault. It appears to me there is 2 faults here. If the direction is stopping of loosing, it could be a trailer fault losing the up levelling imput magnet( if this has them). It does sound like you have been in the wars but it appears to me it would be possibly very hard to trouble shoot.
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#13200 - 01/11/15 01:50 AM
Re: Hydro Problems
[Re: jkh]
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Joined: Jan 2012
Posts: 885
jkh
4 Ever Learning.
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4 Ever Learning.
Joined: Jan 2012
Posts: 885
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WorkingSuper,
I just want to go over what I see you are saying to us.
The car starts to move mostly in the up direction, then there is a pause, then an abrupt start to move again?
The car was found with the mechanical portion of the governor tripped, the car on safety and slack in the hoist cables?
The oil was found heated up to a high tempature and the oil tank over tempature switch was broken and was replaced?
The car when it is sitting idle and not being used will run the pump unit and relevel in?
And you've said the following corrective actions were taken?
A oil heater was installed? The rails were polished? Contactors or relays were replaced? The oil over tempature sensor was replaced? The piston packing was replaced? And the oil flow was adjusted?
I am recommending you and your elevator contractor do the following;
1) Turn the power off to the elevator, place a gauge on the valve and close the hydrualic supply line shut off valve to the piston. If the pressure drops on the gauge the valve needs work.
2) Place the elevator controller on test, turn the power on. With the elevator at the bottom landing, place the elevator on controller inspection. Run the car up and watch the timing of wye and delta. If the time to transfer from wye to delta is lengthy (example would be 5 seconds) stop running the car up. Your DELX timer is bad or set too long.
3) with the controller on test and inspection, run the car up and watch if BB (the motor transfer pilot is picking up before delta. If it is then I belive the car is trying to run up while the pump motor is running in wye. If so, then when delta picks the pump would increase the pressure rapidly to the piston.
Let us know what you find...
Make good choices,
JKH
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#13211 - 01/13/15 04:52 PM
Re: Hydro Problems
[Re: john jay]
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Joined: Nov 2009
Posts: 50
koss
journeyman
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journeyman
Joined: Nov 2009
Posts: 50
UK AND LOOKING FOR A JOB!
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Yep,,,have to ask,,who is paying for this,,is it yourself,,or is it covered by a fully comp maintenance contract,,,this could be interesting!
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