A/C compressor clicks on and off
#8
#9
And it was charged with what? R12 or converted to R134A? If converted, it would only need maybe 75% of the charge R12 requires. It may be overcharged, but if, as MDchanic says, there is no high pressure cut off switch, it would just wail until the cows come home, because they had no auxiliary cooling fans then. I would move spectators away until after it blows.
I would check the pressures. As a rule of thumb, low pressure should be 30-40 lbs and high should be 2.5 times ambient temperature. Sounds more like low charge, a bad ground, or a bad evaporator thermostat.
So tell us some more about yourself
I would check the pressures. As a rule of thumb, low pressure should be 30-40 lbs and high should be 2.5 times ambient temperature. Sounds more like low charge, a bad ground, or a bad evaporator thermostat.
So tell us some more about yourself
#10
- Eric
#11
You're right, Eric. Been so long I forgot about those. Then you watched the whole charge dissipate into the atmosphere. I remember when accepted procedure was to put the discharge hose into a bucket of water and let it rip. Al Gore must have been hiding around the corner watching that.
#12
- Eric
#13
It was never aceptable to put a refrigerant hose in water. Any minor amount of water would cause major problems in the system. It cause acid to form.
What it is cycling on is the low pressure switch. Check by jumper the switch and see if the compressor stay's on. If so you have low suction pressure. Could be caused by low refrigerant or plugged orifice tube. You need special tools to repair this correctly. Take it to a shop.
What it is cycling on is the low pressure switch. Check by jumper the switch and see if the compressor stay's on. If so you have low suction pressure. Could be caused by low refrigerant or plugged orifice tube. You need special tools to repair this correctly. Take it to a shop.
#14
Except that the '72 did not come with a low (or high) pressure cycling switch (it did have a superheat switch), it came with a POA (suction throttling) valve.
The OP never posted back to confirm whether his system had been modified, or whether he really has an unusual problem.
We are still waiting.
- Eric
The OP never posted back to confirm whether his system had been modified, or whether he really has an unusual problem.
We are still waiting.
- Eric
#16
It can't cycle.
- Eric
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