Drier

A filter drier that’s loaded with moisture or debris can turn a healthy system into a restriction nightmare. Techs often get the complaint as “not cooling” or low ice production, but the telltales are at the liquid line: a cold spot or frosting at the drier, pressure drop across the shell, and unstable feed into the metering device. When the drier is restricted, you may hear a faint hiss at the liquid line and see bubbles/flash as the system starves the metering device. Confirm by checking temperature on both sides of the drier and looking for a meaningful drop under load. If the machine was opened previously, ran with a leak, or had a burnout, the drier is a common choke point. Flashing in the liquid line and erratic freeze times are classic signs that refrigerant isn’t reaching the evaporator consistently. A meaningful temperature drop across drier 1880007500 under load is a practical field indicator of internal blockage. Replacing the drier fixes the root cause by restoring clean, dry refrigerant flow. That stabilizes the liquid feed, protects the compressor from acid formation, and prevents repeat restrictions that lead to callbacks. It’s also a smart preventive step any time you’ve corrected a leak or replaced major sealed-system components. Any time you’ve had “no power” from a safety trip due to high discharge temperature, check for restrictions like a saturated drier. Once installed, evacuate thoroughly and recharge accurately. A steady liquid line, consistent superheat, and normal cube/slab formation confirm the restriction is gone and the machine is back to reliable ice production. After replacement, pull a deep vacuum long enough to boil off moisture—otherwise the new drier loads up quickly and the symptom returns.