Press the clock adjust button on the back. The display will show 12h or 24h. Press and hold clock adjust button for about 2 seconds. Display will begin to flash. On the top right of unit there are two buttons that are labeled 'hour, min, sleep Use these to adjust the time.
A pneumatic compression pump is a basic component of intermittent pneumatic compression (IPC), a widely used technique that involves attaching an electrical air compression pump to an inflatable plastic garment that is placed over the affected limb.
You can also use brass compression fittings on PVC pipe, as long as you use a Delrin, (plastic), ferrule under the compression nut.Just replace the brass ferrule with the plastic unit and it will tighten down fine. Done it many times. brass compression fitting will work on pvc pipe. But if your working with pvc just buy a short peice of pvc pipe and 2 couplers and splice it back together.