Welcome back.
Here's the link for the Eheim 2028 manual.http://www.eheim.de/eheim/pdf/en/anleitungen/afilter/professionel_II_2026_2126_2028_2128.pdf.
As far as the priming button goes, if you don't use it you'll be better off in the long run. There is an issue with the o-ring leaking for the primer button. Unfortunately Eheim does not sell this o-ring & recommends returning the 'head' to factory for repair. My 2028 priming button is very difficult to operate so I don't use it anymore. Also, when I unplug the cord & the hoses are still hooked up, water pours out of the 'head'. I just keep it in a tote so when it's time to clean the filter the water is confined to the tote.
Here's a link to the whole sad story of this problem & its eventual solution. I am actually waiting for these o-rings to become available.
[/url]http://www.plantedtank.net/forums/equipment/43083-group-buy-eheim-rubber-o-ring.html
Here's the link for the Eheim 2028 manual.http://www.eheim.de/eheim/pdf/en/anleitungen/afilter/professionel_II_2026_2126_2028_2128.pdf.
As far as the priming button goes, if you don't use it you'll be better off in the long run. There is an issue with the o-ring leaking for the primer button. Unfortunately Eheim does not sell this o-ring & recommends returning the 'head' to factory for repair. My 2028 priming button is very difficult to operate so I don't use it anymore. Also, when I unplug the cord & the hoses are still hooked up, water pours out of the 'head'. I just keep it in a tote so when it's time to clean the filter the water is confined to the tote.
Here's a link to the whole sad story of this problem & its eventual solution. I am actually waiting for these o-rings to become available.
[/url]http://www.plantedtank.net/forums/equipment/43083-group-buy-eheim-rubber-o-ring.html