You need a refractometer and need to add water to mix 40%. That makes your rating -6 freeze point. Plus motor struggles with higher percentage as its trying to pump consistency of oil.
does the pump being up on the roof in these systems ever cause problems in itself? As I know on hydronic heating loops and PC water cooling you always want the pump to be as low in the cooling loop as possible so that unless the loop goes empty the pump never risks pulling air.
My Gut is Telling me They Have added Yogurt Machines & Not Upgraded the Cooling on the Roof. 1) Check the Btu of The Roof Condenser unit. 2) Find out What the Yogurt machines Btu's Cooling Requirements is. 3) 1/2Hp Pump seems awful small to Push thru 7 Yogurt Machine & back to the roof. My Gut is telling me it was Originally like 4 Yogurt machines. 1/2Hp. Now it's 7 = Too Small a Condenser & Needs a 1hp Pump. Those Yogurt Machines usually Have like 5 Ton compressors in them. That Condenser on the Roof is Not 35 Tons cooling ? Get Back to Basics. Call yogurt Machine Manufacturer tech line & Find out Cooling btus required. it Might be on a Tag on the unit. also ask them --- 1) Pump pressure required --- 2) Btus of yogurt machine --- 3) Flow rate Required ---install a flow Meter in the Supply line Down stairs. 4) install a Sight Glass in the Supply & Return lines Downstairs to see if you have air in the system.
@@restaurantrepairs System is Past Maxed out. Airdyne Gp-5 only rated for 5 Machines with 2 barrels in them. it's Right on the Airdyne website. Chart is Right there. Hot day You won't have cooling capacity & units will start tripping out on high head & or Won't freeze product very well. exactly like what your describing is happening. 11 Year old condenser is not as Efficient as it was 11 years ago.
It’s on the draw side. And 18 inches above the flow loop. It’s not under pressure at that point it’s under suction. If you put your hand over the pile it sucks and starts to build output pressure
I've found that if each cylinder freezes product individually but just can't freeze both cylinders when both are running, the AXV's are out of balance. I'll run one cylinder and adjust until I hit 20 psi and then run the other cylinder and do the same thing. Should hit about 23 psi suction pressure when both cylinders are running. That usually takes care of the issue. Anyway, I think we work at the same locations, I'm just doing it in Iowa. That looked a lot like Menchies 😅
Yup, with one comp you want different suction pressures on the barrels. I’ve found if they’re both set to the same pressure it struggles when both are running
I would think there should be a static system pressure, without pump running and running pump outlet pressure 10 to 20 psi above the static pressure. a guess would be having static pressure high enough that the whole system stays in positive pressure at all times, as to what pressure is allowable refer to the equipment pressure charts. it may need a flow bypass valve to keep glycol pump head pressure in spec. if less of the machines are running. that assumes they alter the glycol flow instead of refrigerant gas through the exchangers. I would also expect a bladder type expansion tank to be in the system also. if not under pressure it can cavitate in the pump or heat exchangers, which can cause foaming, as well as causing poor heat transfer in them due to micro bubbles and air/foam pockets forming. if it's meant to only have the pump head pressure and zero static, that seems like dumb engineering. I can see zero static for beer glycol loops, that have a large chiller/reservoir tank.
You need a refractometer and need to add water to mix 40%. That makes your rating -6 freeze point. Plus motor struggles with higher percentage as its trying to pump consistency of oil.
👍 Thanks for sharing.
❤😂
does the pump being up on the roof in these systems ever cause problems in itself? As I know on hydronic heating loops and PC water cooling you always want the pump to be as low in the cooling loop as possible so that unless the loop goes empty the pump never risks pulling air.
I don’t know how much you love that fluke meter but I think you should try a testo 730-3 it works with testo app
My Gut is Telling me They Have added Yogurt Machines & Not Upgraded the Cooling on the Roof.
1) Check the Btu of The Roof Condenser unit.
2) Find out What the Yogurt machines Btu's Cooling Requirements is.
3) 1/2Hp Pump seems awful small to Push thru 7 Yogurt Machine & back to the roof.
My Gut is telling me it was Originally like 4 Yogurt machines. 1/2Hp.
Now it's 7 = Too Small a Condenser & Needs a 1hp Pump.
Those Yogurt Machines usually Have like 5 Ton compressors in them.
That Condenser on the Roof is Not 35 Tons cooling ?
Get Back to Basics.
Call yogurt Machine Manufacturer tech line & Find out Cooling btus required.
it Might be on a Tag on the unit.
also ask them ---
1) Pump pressure required ---
2) Btus of yogurt machine ---
3) Flow rate Required ---install a flow Meter in the Supply line Down stairs.
4) install a Sight Glass in the Supply & Return lines Downstairs to see if you have air in the system.
All great thoughts. But……. It’s been this tower with these 7 machines the whole time.
@@restaurantrepairs System is Past Maxed out. Airdyne Gp-5 only rated for 5 Machines with 2 barrels in them.
it's Right on the Airdyne website.
Chart is Right there.
Hot day You won't have cooling capacity & units will start tripping out on high head & or Won't freeze product very well.
exactly like what your describing is happening.
11 Year old condenser is not as Efficient as it was 11 years ago.
how are you taking that cap off and its not shooting water out?
It’s on the draw side. And 18 inches above the flow loop. It’s not under pressure at that point it’s under suction. If you put your hand over the pile it sucks and starts to build output pressure
I've found that if each cylinder freezes product individually but just can't freeze both cylinders when both are running, the AXV's are out of balance. I'll run one cylinder and adjust until I hit 20 psi and then run the other cylinder and do the same thing. Should hit about 23 psi suction pressure when both cylinders are running. That usually takes care of the issue. Anyway, I think we work at the same locations, I'm just doing it in Iowa. That looked a lot like Menchies 😅
It was a sweetFrog.
@@MalleusSemperVictor we must not have those in Iowa.
Yup, with one comp you want different suction pressures on the barrels. I’ve found if they’re both set to the same pressure it struggles when both are running
@WswRefrigeration yeah they set to 20.5 individually. Then it should run proper together
Bro does frozen yogurt now
🤣
Idk y this comment made me chuckle
I would think there should be a static system pressure, without pump running and running pump outlet pressure 10 to 20 psi above the static pressure.
a guess would be having static pressure high enough that the whole system stays in positive pressure at all times, as to what pressure is allowable refer to the equipment pressure charts. it may need a flow bypass valve to keep glycol pump head pressure in spec. if less of the machines are running. that assumes they alter the glycol flow instead of refrigerant gas through the exchangers. I would also expect a bladder type expansion tank to be in the system also.
if not under pressure it can cavitate in the pump or heat exchangers, which can cause foaming, as well as causing poor heat transfer in them due to micro bubbles and air/foam pockets forming.
if it's meant to only have the pump head pressure and zero static, that seems like dumb engineering. I can see zero static for beer glycol loops, that have a large chiller/reservoir tank.
😮😮😮👍👍👍
No funnel?
🤫