Yes indeed.....Very lucky.

Normally the system should be sucked into a low vacuum for about 30-40 minutes with an HVAC vacuum pump...Then the prescribed amount of 134A added......

The compressors used in these rigs was not a stellar unit......But if maintained they would do OK.......

They have a nasty habit of leaking at the O RING where the case goes together......

Glad to hear you got a good summers use from it......