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#29463 - 06/16/20 02:54 PM 330a Growing coming into each landing  
Joined: Feb 2019
Posts: 31
MulattoTech Offline
System Administrator
MulattoTech  Offline
System Administrator

Joined: Feb 2019
Posts: 31
Is it common for a 330a to growl as it comes into floor level. It does not have an air bladder muffler and it's not cavitating.

#29470 - 06/16/20 09:42 PM Re: 330a Growing coming into each landing [Re: MulattoTech]  
Joined: Jun 2015
Posts: 47
ILikeElevs Offline
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ILikeElevs  Offline
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Joined: Jun 2015
Posts: 47
USA
Originally Posted by MulattoTech
Is it common for a 330a to growl as it comes into floor level. It does not have an air bladder muffler and it's not cavitating.


If it's mad or hungry it may growl

#29472 - 06/17/20 12:24 AM Re: 330a Growing coming into each landing [Re: MulattoTech]  
Joined: Mar 2016
Posts: 191
lowoil Offline
Elevator guy
lowoil  Offline
Elevator guy

Joined: Mar 2016
Posts: 191
Wisconsin
Try speeding the up level some

#29473 - 06/17/20 10:14 AM Re: 330a Growing coming into each landing [Re: MulattoTech]  
Joined: Jun 2018
Posts: 102
ElevatorGuy128 Offline
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ElevatorGuy128  Offline
member

Joined: Jun 2018
Posts: 102
adjust the valve a little if that doesnt work add some oil additive in. had a similar issue on an otis car. valve adjustments helped but only a little ended up dumping a gallon of oil additive to it and that seemed to resolve the issue

#29478 - 06/18/20 01:59 PM Re: 330a Growing coming into each landing [Re: MulattoTech]  
Joined: Jun 2017
Posts: 36
Norcan Offline
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Norcan  Offline
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Joined: Jun 2017
Posts: 36
The dump tube coming off the down section of the valve sometimes gets in front of the pump screen causing this effect. Either cut the tube so it’s above the pump screen or tie it off to the side.

#29480 - 06/18/20 05:54 PM Re: 330a Growing coming into each landing [Re: MulattoTech]  
Joined: Feb 2019
Posts: 31
MulattoTech Offline
System Administrator
MulattoTech  Offline
System Administrator

Joined: Feb 2019
Posts: 31
Thanks all for the replied. A crew is on their way to pickup some "Cat Juice", 1u-9891 Hydraulic Oil Additive to see if that helps. I'll make mention of the dump tube as well, thanks Norcan. I believe they did already make some valve adjustments and got the unit running slightly quieter.


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