Fridge thermostat adjustment
Servis fridge. Always very cold and compressor on. Replaced thermostat,
same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS |
Fridge thermostat adjustment
On May 24, 12:46*pm, "Paul D Smith" wrote:
Servis fridge. *Always very cold and compressor on. *Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. *Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. |
Fridge thermostat adjustment
"harry" wrote in message
... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS. |
Fridge thermostat adjustment
"Paul D Smith" wrote in message ... "harry" wrote in message ... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS. Stats come preset, you really should not have to take them apart. I trust the OP has secured the end of the capillary tube to the evaporator plate? |
Fridge thermostat adjustment
On May 25, 6:02*pm, "Mr Pounder"
wrote: "Paul D Smith" wrote in ... "harry" wrote in message .... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. *Always very cold and compressor on. *Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. *Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. *I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS. Stats come preset, you really should not have to take them apart. I trust the OP has secured the end of the capillary tube to the evaporator plate? - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - True. But if it's not working one has to mess about. Usually they have lost gas & any adjustment doesn't last. Bloody expensive they are too. |
Fridge thermostat adjustment
On May 25, 8:15*am, "Paul D Smith" wrote:
"harry" wrote in message ... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. *Always very cold and compressor on. *Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. *Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. *I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS.- Hide quoted text - - Show quoted text - There are different ones for different numbers of "star" fridges/ freezers. There are several gases which evaporate at different temperatures too. All effects the setting of the stat. |
Fridge thermostat adjustment
"harry" wrote in message ... On May 25, 6:02 pm, "Mr Pounder" wrote: "Paul D Smith" wrote in ... "harry" wrote in message ... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS. Stats come preset, you really should not have to take them apart. I trust the OP has secured the end of the capillary tube to the evaporator plate? - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - True. But if it's not working one has to mess about. Usually they have lost gas & any adjustment doesn't last. Bloody expensive they are too. One should not have to mess about with a thermostat in a domestic unit. What you are doing is very unusual. I strongly suspect the stat is not the problem. Trade a stat is a fiver and they do not lose vapour unless damaged. How old is your fridge? Is it a fridge or a fridge freezer. |
Fridge thermostat adjustment
On May 25, 8:22*pm, "Mr Pounder"
wrote: "harry" wrote in message ... On May 25, 6:02 pm, "Mr Pounder" wrote: "Paul D Smith" wrote in ... "harry" wrote in message .... On May 24, 12:46 pm, "Paul D Smith" wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS One screw will be for the temp setting, the other to vary the differential (or hysteresis) between switch on/switch off. (Ie to stop it coming on and off too frequently) Some fridge compressors don't like being started until the gas pressures have equalised, so the differential needs to take this into account. Thanks Harry - I believe the brass screw is the temp, and the one working against the spring is the hysteresis. I'm guessing that tightening against the spring increases the hysteresis - we'll see ;-). Paul DS. Stats come preset, you really should not have to take them apart. I trust the OP has secured the end of the capillary tube to the evaporator plate? - Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - True. But if it's not working one has to mess about. *Usually they have lost gas & any adjustment doesn't last. Bloody expensive they are too. One should not have to mess about with a thermostat in a domestic unit. What you are doing is very unusual. I strongly suspect the stat is not the problem. Trade a stat is a fiver and they do not lose vapour unless damaged. How old is your fridge? Is it a fridge or a fridge freezer. At teh end of the day, if you're getting the right temp in the fridge and the compressor isnt trying multiple timse to start, I shouldnt worry. NT |
Fridge thermostat adjustment
Stats come preset, you really should not have to take them apart.
I trust the OP has secured the end of the capillary tube to the evaporator plate? Who said I took it apart :-) ? On this model of servis fridge, the capillary is slid into a tube which descends into the bowls of the fridge/freezer, never to be seen again. The old one slid out easily and there was no hint of any clip etc. As to the thermostat itself, it has some slots around the edges which is how I can see the spring and both screws are exposed, presumably for adjustment. Paul DS |
Fridge thermostat adjustment
"Paul D Smith" wrote in message ... Stats come preset, you really should not have to take them apart. I trust the OP has secured the end of the capillary tube to the evaporator plate? Who said I took it apart :-) ? On this model of servis fridge, the capillary is slid into a tube which descends into the bowls of the fridge/freezer, never to be seen again. The old one slid out easily and there was no hint of any clip etc. As to the thermostat itself, it has some slots around the edges which is how I can see the spring and both screws are exposed, presumably for adjustment. Paul DS Fixed it then have you? Hmmm? |
Fridge thermostat adjustment
On Tuesday, 24 May 2011 12:46:55 UTC+1, Paul D Smith wrote:
Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS I am adjusting a thermostat in a lada fridge there are 3 screws 1 contact spacing I think is hysteresis and temp 2 coil spring i think is course temp 3 leaf spring is fine temp I am not a refrigeration engineer but manage to repair most things. |
Fridge thermostat adjustment
On Thu, 28 Jul 2016 06:37:34 -0700, richard wrote:
I am not a refrigeration engineer but manage to repair most things. Could you have a go at your comma key, it doesn't seem to be working! :) -- TOJ. |
Fridge thermostat adjustment
Back in time again then...
2011. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! wrote in message ... On Tuesday, 24 May 2011 12:46:55 UTC+1, Paul D Smith wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS I am adjusting a thermostat in a lada fridge there are 3 screws 1 contact spacing I think is hysteresis and temp 2 coil spring i think is course temp 3 leaf spring is fine temp I am not a refrigeration engineer but manage to repair most things. |
Fridge thermostat adjustment
On Thu, 28 Jul 2016 14:22:47 +0000, The Other John wrote:
On Thu, 28 Jul 2016 06:37:34 -0700, richard wrote: I am not a refrigeration engineer but manage to repair most things. Could you have a go at your comma key, it doesn't seem to be working! :) Not only that but his full stop key is similarly broken (and there seems to be an intermittent problem with his shift key too). :-) -- Johnny B Good |
Fridge thermostat adjustment
On Thu, 28 Jul 2016 21:59:15 +0000, Johnny B Good wrote:
On Thu, 28 Jul 2016 14:22:47 +0000, The Other John wrote: On Thu, 28 Jul 2016 06:37:34 -0700, richard wrote: I am not a refrigeration engineer but manage to repair most things. Could you have a go at your comma key, it doesn't seem to be working! :) Not only that but his full stop key is similarly broken (and there seems to be an intermittent problem with his shift key too). :-) But, as Brian observed, he's probably got those problems well sorted out by now (some five and a bit years later). Never mind eh? Better late than never I suppose. :-) -- Johnny B Good |
Fridge thermostat adjustment
On Thu, 28 Jul 2016 06:37:34 -0700, richard wrote:
On Tuesday, 24 May 2011 12:46:55 UTC+1, Paul D Smith wrote: Servis fridge. Always very cold and compressor on. Replaced thermostat, same results! There are two adjustments screws, a small brass one apparently moving contacts and a larger screw working against a spring. Having fiddled with these the fridge is better, but how do I adjust this properly? Thanks, Paul DS I am adjusting a thermostat in a lada fridge there are 3 screws 1 contact spacing I think is hysteresis and temp 2 coil spring i think is course temp 3 leaf spring is fine temp I am not a refrigeration engineer but manage to repair most things. Just checking - is a Lada fridge a cheap copy of an old Fiat fridge and made in Russia? -- Windows 8.1 on PCSpecialist box |
Fridge thermostat adjustment
On Thu, 28 Jul 2016 21:59:15 GMT, Johnny B Good
wrote: On Thu, 28 Jul 2016 14:22:47 +0000, The Other John wrote: On Thu, 28 Jul 2016 06:37:34 -0700, richard wrote: I am not a refrigeration engineer but manage to repair most things. Could you have a go at your comma key, it doesn't seem to be working! :) Not only that but his full stop key is similarly broken (and there seems to be an intermittent problem with his shift key too). :-) I think he is asking about the heater in his Soviet era car. (BICBW) -- Graham. %Profound_observation% |
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