I am "overhauling" my condenser and frame for the dash A/C. I've taken everything apart and am now reassembling it. I found a dryer (accumulator) but am having difficulty in identifying the binary switch that is attached to it. Does anyone have info/part number for this? Thanks
Not sure,but on automotive systems it is usually a low pressure switch.
I believe it shuts down the compressor if it exceeds a certain threshold. Knowing what that limit is will help ID the switch. Some of these switches (trinary?) also monitor the temps and affect the fan operation.
Sven, sent you a PM with a drwg and parts.
johnH
That is the high pressure switch at the condenser, your low pressure switch is at the compressor inlet.
They make high pressure switches that also shut off with too low of pressure (like if a line blows and all the charge leaves). This is the only scenario I can think of where I high pressure would also shut off compressor on low pressure.
The low pressure switch would be on the suction side. There also may be a thermostat.
There is a thermostat and it shuts the compressor off at 40 deg. at the register.
I'm just looking for the brand and part number of the thingamagig that is attached to the dryer/accumulator. If I get up early enough in the morning I might be able to find someone at Foretravel that will answer the phone.
On my 91 that switch is the trinary switch it controls the electric cooling fans on condenser and thr compressor clutch, not sure on yours got a replacement from foretravel.
Finally nailed this critter down! I talked to a rep at SGM and she sent me a drawing with all specs for the binary switch. I should be able to match this up with the accumulator I recently bought.
With regard to pricing: My new accumulator cost me $50. Foretravel will only sell the switch and accumulator as a package for $130 (I'm rounding). SGM will sell an accumulator for $118 and the switch close to another $50. I'll bring the drawing with specs down to my A/C guy and hopefully have the switch by tomorrow.
Thanks for all the responses.
We are dying to know what the switch is for and what it does.