Type: Posts; User: superandy
Sorry, made a mistake. 507 has 143a not 134a. 421 is still a hfc blend though.
It looks like R421A is a blend of R-125/R-134a (58/42). R421B is R-125/R-134a (85/15). R507 is the azeotropic blend of these two - R-125/R-143a (50/50). So it looks like somebody decided to change...
Two thirds of a sightglass full of oil coild have killed this one. The 06E doesn't like more than three eighths. Page 12 of the compressor service guide explains this. -...
You need to take the links between the windings out first.
Does it have Pro Dialog Plus controls?
40 is pumpdown fault circuit A
41 is pumpdown fault circuit B
46 is high suction overheat, circuit A
47 is high suction overheat, circuit B
103 is high pressurestat compressor A1
203 is high...
There is something in series with the contactor circuit dropping the voltage. Most likely a safety or control of some sort. When you break the circuit by removing the contactor there is no voltage...
There may be a problem with the manufacturing of this condensing unit such as a blockage on the discharge line. Can you check the pressure on the liquid line to see if there is a huge difference...
CVGF is a two stage, economised, high speed centrifugal chiller from Trane. They use R134A. I think they are made in France.
Check your mail.
I think this will work. Credits to jogas for the original artwork.
That won't actually work. The compressor won't turn off at all. When the thermostat opens the relay will still be energised through the contactor auxillary contact. The relay contacts will remain...
High suction, low head, low amps and a hot compressor would make me wonder if the compressor has internal damage such as broken valves.
You're joking right? How can moisture in oil blow circuit boards and contactors?
If the sightglass is full there is way too much oil in this system. Maximum recommended oil level is 1/3 of a sightglass. Too much oil will break valves. Broken valves will cause broken con rods. ...
So, how is the teardown going?
If the contactors are pulling in you might have a fault with the compressor. If they are not pulling in there could be a fault with the relay board, the hp, the motor protection module or the...
It's a free forum. Everyone here is getting information for free. If you don't like that too bad.
Section 8 has the rebuild.