JOHNYPRINT
Well-known member
Hi all
I would like to ask a question going back to the alcohol free subject. Iam a machine mider in the UK operating ROLAND 710 5/5 perfector, installed brand new 12 months ago by man roland. We have a technotrans damp system and the machine is spec for alcohol/IPA free. we also have a betaF filtration system. We are not using a R/O unit for our fresh water inlet. We are currently using SUNLIT intense four colour process(sun chemical) piped to the units via technotrans ink pumps, the fount is stehlin +hostag substifix AF doused at4% to give a ph between 5-5.3ph, 11.5 centigrade, coductivity is at 2300.
PROBLEM= over the working week the ph rises,not continously but by the end of the week we could have a ph level of 7.0+, during the week we will drain off a couple of barrels if it gets to bad and at the end of the week we will have to flush out. we have obviously been talking to our ink supplier(sun chemical uk) about this issue and they have told us that we have a fungus problem and supplied us with a flush solution to to clean the system with,this only works temporarily, we think that maybe the problem originates from fillers coming out of the paper we run therefore making the ph more alkaline.
Could i have some feedback from people who have had experience or may have knowledge of our problem with some constuctive reply as to deal with this issue. The machine runs 24hours 5 days a week. all experienced minders but none of us has run alcohol/IPA free previous, could it be that the IPA kills the bacterial/fungal problems ???.
I would like to ask a question going back to the alcohol free subject. Iam a machine mider in the UK operating ROLAND 710 5/5 perfector, installed brand new 12 months ago by man roland. We have a technotrans damp system and the machine is spec for alcohol/IPA free. we also have a betaF filtration system. We are not using a R/O unit for our fresh water inlet. We are currently using SUNLIT intense four colour process(sun chemical) piped to the units via technotrans ink pumps, the fount is stehlin +hostag substifix AF doused at4% to give a ph between 5-5.3ph, 11.5 centigrade, coductivity is at 2300.
PROBLEM= over the working week the ph rises,not continously but by the end of the week we could have a ph level of 7.0+, during the week we will drain off a couple of barrels if it gets to bad and at the end of the week we will have to flush out. we have obviously been talking to our ink supplier(sun chemical uk) about this issue and they have told us that we have a fungus problem and supplied us with a flush solution to to clean the system with,this only works temporarily, we think that maybe the problem originates from fillers coming out of the paper we run therefore making the ph more alkaline.
Could i have some feedback from people who have had experience or may have knowledge of our problem with some constuctive reply as to deal with this issue. The machine runs 24hours 5 days a week. all experienced minders but none of us has run alcohol/IPA free previous, could it be that the IPA kills the bacterial/fungal problems ???.