Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed about
14 days later and was replaced today, 23 Oct. I'm assuming that the first
replacement really was a brand-new motor, and not one that had already
failed from another customer and been accidently fitted in mistake for a
brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the motor
to draw more current because it couldn't turn.

On 23/10/2019 14:52, NY wrote:
Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed
about 14 days later and was replaced today, 23 Oct. I'm assuming that
the first replacement really was a brand-new motor, and not one that had
already failed from another customer and been accidently fitted in
mistake for a brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the
motor to draw more current because it couldn't turn.

They are stall motors on most valves so will stall when in operation.

They are actually small synchronous mains motors and cost next to nothing.

Y plan valves have switches to turn them off when in the middle I think,
I have never actually bothered with those things.

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

In article ,
dennis@home wrote:
On 23/10/2019 14:52, NY wrote:
Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed
about 14 days later and was replaced today, 23 Oct. I'm assuming that
the first replacement really was a brand-new motor, and not one that had
already failed from another customer and been accidently fitted in
mistake for a brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the
motor to draw more current because it couldn't turn.

They are stall motors on most valves so will stall when in operation.

They are actually small synchronous mains motors and cost next to nothing.

Y plan valves have switches to turn them off when in the middle I think,
I have never actually bothered with those things.

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

Cheers, T i m

In article ,
T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

We had one which suddenly started clanging very loudly; SWMBO got someone
in while I was away - could't find a fault, I replaced the valve and it was
better. This summer I fitted a motor open/motor shut, did a bit of
rewiringb and it's now all quiet.

Cheers, T i m

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 23/10/2019 18:48, charles wrote:
In article ,
T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

We had one which suddenly started clanging very loudly; SWMBO got someone
in while I was away - could't find a fault, I replaced the valve and it was
better. This summer I fitted a motor open/motor shut, did a bit of
rewiringb and it's now all quiet.

Odd. When power is removed, it usually takes a couple of seconds for the
valves to close. The spring pulls on the mechanism, but the mechanism
has to drive the unpowered motor round. The high gear ratio means that
there is a lot of drag. The slow closing means that they are normally
quiet (a slight whirr and a virtually inaudible bump). We have 9 of
them, mostly over 16 years old, and none make a noise.

SteveW

On 23/10/2019 18:48, charles wrote:
In article ,
T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

We had one which suddenly started clanging very loudly; SWMBO got someone
in while I was away - could't find a fault, I replaced the valve and it was
better. This summer I fitted a motor open/motor shut, did a bit of
rewiringb and it's now all quiet.

Cheers, T i m

I had one that failed, but when I got it off I noticed that there bas
black muck aroound a ceramicc twist on connector thing. I took it off
anbd te wires fell apart.,

I soldered them together, put the ceramic cap on with a blob of glue and
its still working...


--
"Socialist governments traditionally do make a financial mess. They
always run out of other people's money. It's quite a characteristic of them"

Margaret Thatcher

On 23/10/2019 18:48, charles wrote:
In article ,
T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

We had one which suddenly started clanging very loudly; SWMBO got someone
in while I was away - could't find a fault, I replaced the valve and it was
better. This summer I fitted a motor open/motor shut, did a bit of
rewiringb and it's now all quiet.

Cheers, T i m


Spring return ones don't clang, it may have had a broken gear segment.

On Wednesday, 23 October 2019 18:15:26 UTC+1, T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

Cheers, T i m

There are 2 types, motorised & solenoid. The latter are cheaper & noisy. AFAIK both use spring return.


NT

On 23/10/2019 21:31, wrote:
On Wednesday, 23 October 2019 18:15:26 UTC+1, T i m wrote:
On Wed, 23 Oct 2019 16:30:30 +0100, charles
wrote:

snip

You can buy two port valves with switches to turn them off at end of
travel but they cost more than the stall motor, spring return valves.

Trouble with spring return vales is they are noisy when they close..

I'm not sure if there any that work like a solenoid but the return
spring jobby I have in my hand right now is near silent in operation
(both ways).

Cheers, T i m

There are 2 types, motorised & solenoid. The latter are cheaper & noisy. AFAIK both use spring return.


NT


A third type has motorised open and return but the wiring is slightly
more and they cost more.
They are quiet.

On Wed, 23 Oct 2019 15:50:21 +0100, "dennis@home"
wrote:

On 23/10/2019 14:52, NY wrote:
Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed
about 14 days later and was replaced today, 23 Oct. I'm assuming that
the first replacement really was a brand-new motor, and not one that had
already failed from another customer and been accidently fitted in
mistake for a brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the
motor to draw more current because it couldn't turn.

They are stall motors on most valves so will stall when in operation.

Correct.

They are actually small synchronous mains motors and cost next to nothing.

£9.99 delivered (the other day).

Y plan valves have switches to turn them off when in the middle I think,

They don't turn them off, they reduce the power to them via a micro
switch, diode and resistor to provide a 'holding current' and without
magnetising the motor.

I have never actually bothered with those things.

I can tell. ;-)

Cheers, T i m

On 23/10/2019 14:52, NY wrote:
Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed
about 14 days later and was replaced today, 23 Oct. I'm assuming that
the first replacement really was a brand-new motor, and not one that had
already failed from another customer and been accidently fitted in
mistake for a brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the
motor to draw more current because it couldn't turn.

It wouldn't matter if it was jammed. They are synchronous motors and the
limit switch is only for feedback. In normal operation they run and
drive the valve open and when it reaches the end of travel the motor
simply sits there, energised, but stalled until the power is removed and
the spring pulls it closed.

SteveW

On Wed, 23 Oct 2019 22:21:11 +0100, Steve Walker
wrote:

On 23/10/2019 14:52, NY wrote:
Failed Honeywell CH valve motor replaced on 2 Oct. That motor failed
about 14 days later and was replaced today, 23 Oct. I'm assuming that
the first replacement really was a brand-new motor, and not one that had
already failed from another customer and been accidently fitted in
mistake for a brand new one.

The valve itself was easy to turn, so it hadn't jammed and caused the
motor to draw more current because it couldn't turn.

It wouldn't matter if it was jammed. They are synchronous motors and the
limit switch is only for feedback. In normal operation they run and
drive the valve open and when it reaches the end of travel the motor
simply sits there, energised, but stalled until the power is removed and
the spring pulls it closed.


On the Honeywell diverter valves there is a mid position that uses
magic to hold it there. ;-)

Cheers, T i m