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#25548 01/06/19 12:54 AM
Joined: Oct 2018
Posts: 10
Hackmaster
Hackmaster
Joined: Oct 2018
Posts: 10
I have a Otis Mrs w generator just put in a new hoist motor got the car runs up normal speed but slow speed in the down the generator sounds a little bogged down on the down.chexk all speed relays etc
Any help would be great

upndn33 #25549 01/06/19 12:55 AM
Joined: Jan 2014
Posts: 736
R
old hand
old hand
R Offline
Joined: Jan 2014
Posts: 736
Sounds like a ground or leak in loop circuit.

upndn33 #25550 01/06/19 01:02 AM
Joined: Oct 2018
Posts: 10
Hackmaster
Hackmaster
Joined: Oct 2018
Posts: 10
Thanks for your quick reply I opened the the top where the connections on the genny was and it was litter w carbon dust.how can I research the leak .just send the generator out?

upndn33 #25551 01/06/19 01:14 AM
Joined: Dec 2015
Posts: 1,769
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ElevatorPractitioner
ElevatorPractitioner
I Online: Content
Joined: Dec 2015
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What was the original problem with the motor? Also make sure you are getting full field voltage to the motor. You check for leaks with a megger.

Indirtwetrust #25552 01/06/19 01:21 AM
Joined: Oct 2018
Posts: 10
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Orig prob w motor is that they pulled the motor due to a broken pig tail and the com was cooked.i check the MF runs constant at a standing of 40 and running around 85 in both directions.
Thanks for your reply

upndn33 #25561 01/07/19 02:43 AM
Joined: May 2012
Posts: 194
L
Len Offline
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member
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Posts: 194
compounding might be screwed up,neutral might have been moved on generator..up/dn.should have a flat of 10fpm..

upndn33 #25563 01/07/19 02:54 AM
Joined: Oct 2018
Posts: 10
Hackmaster
Hackmaster
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Great thanks for the help

upndn33 #25568 01/07/19 11:21 PM
Joined: Dec 2015
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I
ElevatorPractitioner
ElevatorPractitioner
I Online: Content
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It’s a good idea to check neutral first. Even if the motor/gen just came from a motor shop. You’d be surprised.

upndn33 #25569 01/08/19 12:27 AM
Joined: Oct 2018
Posts: 10
Hackmaster
Hackmaster
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Will do ty


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