Black n Tan
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I have just received a brand new Braumeister 50L from G&G. The manual that comes with the unit and Spiedel website indicate that the recirculation pump are 23W, but my unit has only 9W pumps (black Laing E1 vario 15/700B 3-9W, ITT acquired Laing in 2009). Trolling through forums I note that a few people with faulty pumps have received a more powerful 23-25W pumps (blue Vortex BW152 oT 25W) from Spiedel. I imagine the more powerful pump delivers greater head pressures and flow rates, which could affect efficiency etc. I have sent an email to G&G and Spiedel asking for clarification, but would be interested to hear what pump other have in their Braumeisters (black ITT/Laing E1 vario 15/700B 3-9W or blue Vortex BW152 oT 23W or 25W) and the approximate date of purchase. I also own a 20L Braumeister with the ITT E1 vario 15/700B 3-9W and upgraded the pump to a Lowara EBV 15-3/65 (Lowara is ITT's brand in Europe and the pump had the same machining as the ITT pump and simply screwed straight on) which is rated at 4-27W. I have found that if I set this pump at about 9W I get a significant drop in flowrate (spill over the malt pipe) as the mash proceeds. In response I tend to increase the watts during the mash to maintain a good flow rate. Unfortunately I do not have any firm data on whether this increases efficiency, but I suspect it improves efficiency modestly.
Why does my manual indicate a 23W pump but my unit only has a 9W pump? Are we getting old stock from Spiedel with an inferior pump?
Attached are two photos: firstly the ITT/Laing 9W pump and secondlythe Lowara upgrade that I installed. I also attach a link to the Loaware upgrade (?) pump www.deutsche-vortex.de/index.php?id=103&L=1
Why does my manual indicate a 23W pump but my unit only has a 9W pump? Are we getting old stock from Spiedel with an inferior pump?
Attached are two photos: firstly the ITT/Laing 9W pump and secondlythe Lowara upgrade that I installed. I also attach a link to the Loaware upgrade (?) pump www.deutsche-vortex.de/index.php?id=103&L=1

