Macdasher -
Park your TM in the shade if at all possible. The A/C will have a really hard time coping with full bright sun heating up the outside walls.
Some, but not all, household air conditioners (and that is what this one is) have a control that enables you to either recirculate the room air, or draw in fresh outside air. Presuming that your unit has such a control, it will do a much better job of cooling the inside of the TM if you leave it on the Recirculate setting. The air may get a little stale after a while, especially if you cook inside, but you can change the air quickly, without gaining too much heat, by simply opening the door for a few minutes.
Bill
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