Ask The Brewmasters

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help! 

All,

I have a pump problem (shocking) that I have been dealing with/living with for several months now, and I'm hoping to find a remedy for it after trying everything to eliminate this ghost in the machine. My hot liquor pump consistently loses pressure during sparging/knockout loop sterilization, when water temperature has increased and hot liquor volume has decreased. The pump behaves fine during vessel rinsing and mash in, but once I've increased the temp of the hot liquor for sparging (170) it gradually loses pressure until the flow out of the sparge is barely a trickle. Looking at the pump curve, like most pumps there is a loss of pressure with increased temperature, but this is an incredibly drastic condition. After I've completed wort knockout, and the water volume in the hot liquor tank has increased, full pressure resumes during final vessel rinsing. The water temp has decreased at this point and usually lands around 160. 

I've replaced the seal kit on the pump, tightened and reseated every connection to and from the pump to eliminate any air being pulled in, removed the check valve (piping into brewhouse passes through two) on the brewhouse side, and installed a vortex breaker on the drain of the HLT to help eliminate any vortexes being pulled into the pump. I've talked to the brewhouse manufacturer (BrauKon), pump manufacturer (Grundfos), local service provider for the pump, and about every brewer in town about this issue, and nothing we have tried has solved this problem.

Any ideas would be greatly appreciated, thanks for any help!