I run a village fete beer tent once a year, using a village owned gas and cooling system. Last year I had the cooler serviced, which in practice meant having it replaced by the supplying company, so that is one year old now. It worked great last year – the beer was cold; pipes insulated etc. I thoroughly clean pipes, cooler, taps and couplings before and after. I run two taps: one serves 4 x 11 gal lager and the other serves 2 x 11 gal bitter over a 5 hour period.
My problem is this: keg bitter serves beautifully, but keg lager fobs uncontrollably. I am running from a single gas bottle (CO2) – is that my problem? I always return the gas bottle to the supplier and start afresh each year. I have struggled terribly for the last two years: got the cooling right last year which sorted the bitter, but still no joy with the lager. I have swapped around all connectors, lines and taps….it doesn’t seem to be a malfunctioning component – it is always the lager that foams, not the bitter.
What am I doing wrong? Thanks…