Quote:
Originally Posted by Veek
Unfortunately, I find myself in a but of a fix. I have a CAV GT40 replica with mostly South African parts. It seems that my Air Conditioning Control Box has gone on the Fritz and I need to replace it. I was wondering if it looked at all familiar to anyone and if it is something you may give me a lead I may pursue to to source a replacement. The U.S.A. CAV rep indicated that the part in question is no longer made and I will need so install a substitute but was unaware of what that might be. I've also contacted the factory and they no longer stock the item.
Voltage goes in into the unit but none is distributed to the A/C pressure switch, compressor or condenser fan. The part number on it is 05-016-004-01 (as seen in the pictures I have attached). I was hoping that if I couldn't find a part, could you possibly advise me of anyone that may know any appropropriate substitutions or possibly direct my inquiry.
Thanks so much,
Veek
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That control box appears to be nothing more then a series of relays all bundled together. You could easily replace that box with 3 relays if you want. Not knowing how the system is wired exactly I'll give you an example.
In my mind you only need 2 relays, one for the fan and one for the compressor. The prssure switch has no amp draw and does not need a relay to carry the load. Voltage from the switch is sent to the pressure switch and then from the pressure switch to the control side of the relays. Main battery voltage is sent to one side of the relays and out the other side to the compressor and the fan(1 relay for each).
When you turn the switch to on if the pressure switch is closed like it should be it will send control voltage to the relays for the fan and compressor...closing those relays and bringing on the compressor and fan. When the system cools down and pressure drops and the switch opens it will drop voltage to the control side of the relay and turn the compressor and fan off. you may have a pressure switch for the condensor fan. If that be the case then the control voltage for the fan relay needs to run through that first and that switch will control the fan coming on and shutting off.
Make sense...lol.