I could use a bit of help.
My upright freezer (Frigidaire) with an EMU 60HSC compressor has not be hitting the low temps for the last month. Still below 32F, but not hard-freezes- was expecting -10F or lower.
Checked coil inside freezer- slight frosting. Melted all frost/ice on the bottom portion with heat gun. Purged said melt out of the bottom of the freezer. Checked fan that recirculates cold air is functioning properly.
Could not hear a 'click' on the temperature knob control but my hearing is bad. Connections were not spades so did not attempt to disassemble; powers on/off unit.
Using a supco BPV31, purged AC manifold, and measured on the process line at -15hg. Added back R134a until approximately 0.
Back of the unit states cut in/out is at 14 - 0 psi.
Started measuring the current draw on the compressor- it would spike to nearly 10A for about 15-30 seconds, then draw down to 1.5A. From the manual for the EMU HSC the last 1/3 of the cycle should be around 140 watts. There's also a phase around 2amps and one around 0 (sounds like just the fan). Circuit diagram seems to indicate that if the compressor is running, the recirculation fan is running, thus making me think something wrong with thermal overload.
I added a Supco Hard start R0210 temporarily; capacitor tests good (10.6 uF vs rated 12 uF). Compressor has been running (sounding) fine since and no extreme amperage draw noted.
Freezer has a 30 minute defrost cycle.
I did freeze a bucket of water overnight, but I'm still not 'freezing solid' my ice cream.
Thermal camera photos of the unit is available- unfortunately every single one of my thermocouples are broken. Go figure.
New (used) units run 150-250$. In a bind with $$ atm due to multiple surgeries for my son... so while calling in someone is a possible solution I probably can't afford the $$. Would rather exhaust all my resources first.
Thanks for any ideas or pointers- I've been studying as much as I can and I must be missing something.
[link] [comments]
No comments:
Post a Comment