Can anybody identify this Rotring Compressor

[Johndc]

I have inherited an old Rotring Compressor (see below) with no manual. Can anyone identify it, and suggest where I may be able to find a manual?

 

http://s349.photobucket.com/user/johndcaswell/media/Compressor_zps4mvsgh3t.jpg.html

 

[Bozothenutter]

That is an exact copy of the sil-air I have....

[Jetblast]

That's a Sil-Air 15 Export re-branded fro Rotring, it's a bit older that the current model, but generally similar. I imagine that the original manual was a re-print of the Werther manual, the current Werther manual should get you going (It's more focused on the automatic models, but other than that should do you fine);

 

http://www.air-craft.net/acatalog/Sil-Air-Manual.pdf

[Johndc]

Thank you both very much - I feel a bit more confident in using it now

[Johndc]

Jetblast - final question (I hope) - from an absolute beginner.  What is the difference between automatic and non-automatic (manual?) models?

[Jetblast]

Johndc - After being switched on the manual model continues to run & once tank pressure is reached excess pressure will bleed through the pressure relief valve - the bleeding will continue until the tank pressure is reduced by consuming air from it or until the compressor is switched off.

 

The automatic models have a pressure control unit mounted at the front (the grey / black plastic housing that you will see on most current Werther models) which monitors tank pressure, cuts the motor of once max. pressure has been reached, relieves residual pressure from the head & then re-starts the motor when the pre-set lower pressure limit is reached - & so on & so forth as required.

Hope that helps.

[Johndc]

Jetblast - thank you