Need instruction for Healthdyne cpap

[Grimace]

I just bought an older model Healthdyne Tranquility Quest cpap machine to take on trips so I don't take a chance on damaging my regular machine. I'd like to adjust the pressure and ramp settings, which I know is done with set screws on the back of the machine. I'd like to read the instructions before tinkering with the machine, but the machine did not come with them. Does anyone out there had a set of the required instructions that they could forward to me? It would be much appreciated.