[TowerTalk] Fw: [MARC-MD] US-Towers HDX 555 stuck up. Help anyone?

[Steve Jones]

I agree with Herschel's recommendations, but with one additional step:
Before anything else, verify there is AC power at the switch box at the
tower.  Nor sure how you get power to the tower from the building but you
need to rule out if a conduit and power/control wiring was damaged in winter
or by gophers etc etc.  I know you hear a relay noise but check for full AC
voltage anyway.
GL es 73,
Steve
N6SJ
ps. I have an HDX 589.  The motor turned but the belt was slipping and I had
to tighten the tension on the belt.  These things are amazing devices!


-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Herschel
Hall
Sent: Tuesday, April 4, 2023 8:49 AM
To: Gene Smar <ersmar at verizon.net>
Cc: Tower Talk <towertalk at contesting.com>
Subject: Re: [TowerTalk] Fw: [MARC-MD] US-Towers HDX 555 stuck up. Help
anyone?

My suggestions are as follows.
Set the indoor controller to local, go to the tower, open the box front,
using the switch on the outdoor control, move it to the down position & see
if the contactor in the middle of the box closes & causes the motor to run.
If not then disconnect the ac power from the outdoor box & the indoor
controller.
Remove the belt guard & rotate the pulley by hand & lower the tower fully.
Then see if power is getting to the motor. Do not try to do any service with
the tower fully extended. The motor can var bought from Grainger & other
suppliers if needed.
Good luck
Herschel Hall
WA9KIA

On Tue, Apr 4, 2023 at 9:11 AM Gene Smar via TowerTalk <
towertalk at contesting.com> wrote:

> TT:
>      Can someone help Bruce with his crank-up question? Please reply 
> to him and not me. Many thanks.
> 73 deGene Smar AD3F
>
> Sent from my Radio Shack TRS-80 model 100 laptop
>
>    ----- Forwarded Message ----- From: "euntermeyerbbaskett via 
> MARC-MD" < marc-md at marcclub.org> To: "MARC Amateur Radio Club" 
> <marc-md at marcclub.org>
> Cc:  Sent: Mon, Apr 3, 2023 at 5:54 PM Subject: [MARC-MD] US-Towers 
> HDX 555 stuck up. Help anyone?
> I am looking at an HDX 555 tower and lifter of a friend of mine who is 
> blind. It is fully extended up. There is no noise from the motor. 
> After some other basic trouble shooting, I checked the motor's start 
> capacitor, and it seems OK. Makes a nice big spark when shorted.  
> There is an indoor controller, and at the tower's service panel one of 
> several relays can be heard when toggle switch for down is thrown 
> (indoor or out.)Ideas/experiences? What is next? Any help or 
> suggestions would be very appreciated.  I have not found or seen any 
> service manuals. Please write me at my arrl.net address.Thanks, 73, ~ 
> Bruce K3BAB
>
> Sent from my Galaxy
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