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Hoshizaki issue
Hoshizaki
M# KM-1601SRH
Call for no ice production. Went and found machine "stuck" in fill. No error codes present. At this time it went into freeze and made 2 good batches of ice. The next freeze cycle lasted 8 minutes before going into harvest. This happened several more times, where freeze cycles would last between 7-8 minutes or so.
I checked to make sure the float switch was okay. It is closed when the float is up and open when the float is down. While in freeze, I checked to see if unplugging the float switch from the board would send the machine into harvest (after 5 minutes) and the machine went into harvest, so determined board is okay.
I am noticing erratic freeze and fill times and water dumping down the drain during freeze, harvest and fill. Then it will stop draining and then happen again. I am not sure of the technical Hoshizaki term but the way the water purges is by the pump motor reversing and sending the water through a " triangle valve" spring and plunger. Is it possible that this is just worn out and not seating correctly? I cleaned it and it seems perfectly fine and wasn't even dirty to begin with. It doesn't look worn. I also stretched the spring out slightly per tech support to make sure there is enough tension.
I am obviously missing something. What else can cause erratic fill, freeze and harvest times? When is this machine actually supposed to purge. I thought it was every 10 cycles or so but it is happening more then that. Thanks
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PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
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Officially, Down for the count
YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET
I know enough to know, I don't know enough
Why is it that those who complain the most contribute the least?
MONEY CAN'T BUY HAPPINESS. POVERTY CAN'T BUY ANYTHING
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Bad board could do this too
Especially when it made 2 good batches of ice
Ice machines are a Pain in the ASS
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Especially Hoshizaki.
PHM
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Originally Posted by
Snapperhead
. . . Ice machines are a Pain in the ASS
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
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So I thought the check valve was leaking by but I removed the black tube/hose from the back of the valve on the inside of the sump and it still leaks down the drain slightly. Very hard to see while running. Also, swapped out the board from another exact machine on site just to test board and does the same thing.
I've read through the manual many times and just did again to refresh my memory. Filters are brand new, screen is clean on water inlet valve, sump is filling to the top.
It seems to me there is just the float or check valve that could do this at this point? But as a test for the check valve, can I not just take off the black tube/hose (the one with the factory hole in it) and that should then not allow water to be purged. It would just trickle back into the sump. And leave the bottom tube/hose where it would drain out. Just take the end off the check valve.
And with the float, I checked that first thing and it was working properly. But it is just a switch, could be intermittent issue?
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Open the check and remove the piece of plastic from the slide that's in there!
How they get past the pump ill never know!
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Post Likes - 1 Likes, 0 Dislikes
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Originally Posted by
pecmsg
Open the check and remove the piece of plastic from the slide that's in there!
How they get past the pump ill never know!
Sorry not sure what you mean. Take the 3 screws out, then there is just the rubber gasket and spring. What plastic piece? And what would this do? Thanks
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Originally Posted by
HVAndyC/R
Sorry not sure what you mean. Take the 3 screws out, then there is just the rubber gasket and spring. What plastic piece? And what would this do? Thanks
That rubber gasket is the check valve. Anything gets in there it doesn't seal!
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Originally Posted by
pecmsg
That rubber gasket is the check valve. Anything gets in there it doesn't seal!
Yeah. It was perfectly clean. I may just pick one up as well as a float at this point. I need them both for stock anyway if I don't need them. Thanks
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Replace that float , they are cheap , 30 bucks online
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Originally Posted by
HVAndyC/R
Hoshizaki
M# KM-1601SRH
Call for no ice production. Went and found machine "stuck" in fill. No error codes present. At this time it went into freeze and made 2 good batches of ice. The next freeze cycle lasted 8 minutes before going into harvest. This happened several more times, where freeze cycles would last between 7-8 minutes or so.
I checked to make sure the float switch was okay. It is closed when the float is up and open when the float is down. While in freeze, I checked to see if unplugging the float switch from the board would send the machine into harvest (after 5 minutes) and the machine went into harvest, so determined board is okay.
I am noticing erratic freeze and fill times and water dumping down the drain during freeze, harvest and fill. Then it will stop draining and then happen again. I am not sure of the technical Hoshizaki term but the way the water purges is by the pump motor reversing and sending the water through a " triangle valve" spring and plunger. Is it possible that this is just worn out and not seating correctly? I cleaned it and it seems perfectly fine and wasn't even dirty to begin with. It doesn't look worn. I also stretched the spring out slightly per tech support to make sure there is enough tension.
I am obviously missing something. What else can cause erratic fill, freeze and harvest times? When is this machine actually supposed to purge. I thought it was every 10 cycles or so but it is happening more then that. Thanks
Every cycle in harvest the machine fills with water to the point it overflows a stand pipe in the water tough. By the end of harvest every cycle water should be going down the drain. In freeze no water should be leaving the main drain line. If the bin drain is connected to the machine drain it could be deceiving. If water is leaving the machine drain 8n freeze it's either getting past the check valve or over the stand pipe. If the water inlet valve never shuts off it could overflow the stand pipe but your freeze is short so either check valve leaking or intermittent float switch problem.
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Thanks, just picked up both. Going there now
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Good luck.
I just had a customer swap out several perfectly reliable old Manitowocs for a bunch of used ten-year-old Hoshizakis. So I expect that soon I will be in this same position - begging for Hoshi assistance. <g>
Until recently I had a no-electronics Manitowoc that no one else would touch. From the 1970's I would guess. Cleaned twice a year. Always worked well - it was in a solvent still plant's lunchroom. It was still working when they closed the facility.
No wait: I was thinking of the ones in a local prison - the solvent still facility's unit had the big orange relay - would that be considered "electronic" ? <g>
PHM
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Originally Posted by
HVAndyC/R
Thanks, just picked up both. Going there now
PHM
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When faced with the choice between changing one's mind, and proving that there is no need to do so, most tend to get busy on the proof.
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Thanks everyone. Replaced float and now no problems. Must have been an intermittent issue. I replaced check valve rubber washer and spring as well since it looked a little worn. Maybe a combination of the two issues.
I’ve never had a float that I can remember work sometimes and not work others. It’s usually been good or bad.
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Originally Posted by
Poodle Head Mikey
Good luck.
I just had a customer swap out several perfectly reliable old Manitowocs for a bunch of used ten-year-old Hoshizakis. So I expect that soon I will be in this same position - begging for Hoshi assistance. <g>
Until recently I had a no-electronics Manitowoc that no one else would touch. From the 1970's I would guess. Cleaned twice a year. Always worked well - it was in a solvent still plant's lunchroom. It was still working when they closed the facility.
No wait: I was thinking of the ones in a local prison - the solvent still facility's unit had the big orange relay - would that be considered "electronic" ? <g>
PHM
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No. The replacement board I believe they called electronic. Those ones with the big relay would melt down real good every now and then.
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Ha I found one with a harvest LED light.
The board is marked ELECTRO-PRO
That might be electronic
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“If You Can Dodge A Wrench You Can Dodge A Ball”
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For sure it is either a water fill issue or you are leaking water by down the check valve during a freeze. Check water pressure and fill times and full sump and I always lower the float switch a tad from the factory setting