Tores mailbox VIIC and VIIC/41 operation and technical details

[NZSnowman]

Simon
Luboil filters.
Knife filters previously discussed.
Your question of today. The  knife filters are not only fuelfilters, but are sometimes used for finer  filtration of luboil. On the picture below you see a larger modern filter having an electric motor on the top doing the rotation. In the case of marine execution in the 1940 years I guess this would be carried out by a handle on the top.
Tore

Thanks Tore.

I was just looking on the net to see that a filter look like

[NZSnowman]

Simon
Luboil filters.
Knife filters previously discussed.
Your question of today. The  knife filters are not only fuelfilters, but are sometimes used for finer  filtration of luboil. On the picture below you see a larger modern filter having an electric motor on the top doing the rotation. In the case of marine execution in the 1940 years I guess this would be carried out by a handle on the top.
Tore

Here my 3^rd review of this pipe Putting in the piping to the filters now.

[NZSnowman]

Tore, on Plate 14: Engine lubricating oil system, what is symbol over the filter? Is it a collecting funnel symbol?

http://www.uboatarchive.net/U-570Plate9.htm

[tore]

Simon.
I guess the symbol over the finefilter is a differential pressuregauge. The gauge measure the pressure in the pipeline before and after the filter thus  indicating the resistance and when the filter has to be cleaned. 
Tore

[tore]

Simon
Luboil filters.
Knife filters previously discussed.
Your question of today. The  knife filters are not only fuelfilters, but are sometimes used for finer  filtration of luboil. On the picture below you see a larger modern filter having an electric motor on the top doing the rotation. In the case of marine execution in the 1940 years I guess this would be carried out by a handle on the top.
Tore

Here my 3^rd review of this pipe Putting in the piping to the filters now.

Simon.
Looks promising. a good thing you are colourmarking the pipes!
Tore

[NZSnowman]

Simon.
I guess the symbol over the finefilter is a differential pressuregauge. The gauge measure the pressure in the pipeline before and after the filter thus  indicating the resistance and when the filter has to be cleaned. 
Tore

Thank Tore.

I thought they were pressure gauges. They must be under the decking next to filter?

[NZSnowman]

Simon
Luboil filters.
Knife filters previously discussed.
Your question of today. The  knife filters are not only fuelfilters, but are sometimes used for finer  filtration of luboil. On the picture below you see a larger modern filter having an electric motor on the top doing the rotation. In the case of marine execution in the 1940 years I guess this would be carried out by a handle on the top.
Tore

Here my 3^rd review of this pipe Putting in the piping to the filters now.

Simon.
Looks promising. a good thing you are colourmarking the pipes!
Tore

The piping around the LO filters would be the most complex I have drawn!
 
Its hard to get it to fit around all the other LO Piping and then the Cooling water piping

[tore]

Simon
In addition we have still smaller pipes to gauges, drains etc waiting for you. Just think about the poor people who had  to maintain the various components.
Tore

[tore]

Simon.
Filtergauges.
I cannot see the differential gauges on the manometerpanel so I guess if you place the gauges under the floorplating it would be OK.
Tore

[NZSnowman]

Tore, here a sneak preview. Will finish it tomorrow, off to bed now
 
How does the filters look liker?

[tore]

Simon
While we are on the luboilfilter. The filters should be able to be drained for impurities. Hopefully you should be able localize a drainpipe with valve (cock) to the collecting tank.
Tore

[tore]

Simon.
Luboilpiping.
Your new piping layout seems to be your normal high standard. I`ll  have a closer look at it during the day.
Tore

[tore]

Simon.
Luboil piping/filter.
I have checked you last lay out and believe everything is fine. I am impressed by the way you are able to squeeze in the aux. luboilpump dischargepipe. A small remark as to the cover of the luboil filter. You have generously fitted the cover of the casing with 16 bolts, I guess 8 would do. I believe the casing would be tested with some 6 bar and the relief valve would open at 4, so remember the poor maintenance fellows. Looking forward to see the complete system, must be impressive.
Tore

[tore]

Simon.
Differential manometer luboilfilter.
I just checked a photo of the instrument panel on the engine page of u historia. If you look at that photo you`ll find a manometer marked 3 and on the nameplate it says . Schmier

[NZSnowman]

Tore, great spotting on the pressure gauges, you can trace the piping down to the filters http://www.360cities.net/image/submarine-u-995-machine-room#333.75,7.18,38.9