To replace a low pressure control (timer iniate on a ICEU150), does it require going into the sealed system? Specifically, do I need to get into the sealed system to replace this component?
If you're talking about this part, then YES: Image Viewer
So you'll need your recovery unit, vacuum pump, gauges, torch, various sundry items, etc.
Maybe a pinch-off tool might streamline the process. I'd have to be there to see it. In a unit that small, ANY refrigerant loss may have dire consequences on its performance.
Isn't that just a thermostat bonded to the tail coil?. Usually in a sleeve soldered to the coil that it slides into?
Before condemning this switch, one should measure the tail coil temp to insure that the machine is fully charged and the condenser is clean. .
fixbear wrote: Isn't that just a thermostat bonded to the tail coil?. Usually in a sleeve soldered to the coil that it slides into?
Not from what I can see, fixbear.
To find out exactly what Ed was asking about, I'd briefly danced around looking at various internet resources - just to be sure:
The picture definitely shows it's open-ended, with clear cap over the opening to keep it clean. So, at best, it might just require a pinch-off tool, torch and a stick of sil-fos...if done perfectly.
However, the charge weight in that little machine varies from 9 to 13 ounces - depending on the version of ice maker. A model ICEU150A4 states 12 oz of 404A. Ed said ICEU150HA4, which I couldn't find. Anyway, that ain't much refrigerant at all, so if some leaks out, then might as well pull the charge and weigh back in the exact amount.
Right, I think back to about 3 years ago I remember working on a couple of these and I installed a new one 2 years ago. I specifically remember that Mile High silver brazed a control line right into the suction without the use of any fittings. If in fact the switch is bad, one would best have a expanding flare set and just cut the line as far out as possible before it reduces to the cap . Expand the new one and braze over the old. .It of course requires recovery and a tap install, new drier, and vacuuming.
Had to go through my field notes and pictures to remember. Mile High makes this machine for others as well. I installed a Manitowoc replacement and it was identical part for part.
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