Don't tilt the compressor
Be careful not to tilt the CryoTiger compressor when moving or carrying it. Oil in the pumps needs to stay at the bottom. If you do tilt the compressor, wait 4 hours before turning it on (longer if it's cold).Recharge Frequency
In mid-April 1999 the CryoTiger failed to keep the CCD cold after running almost continuously since January 20, 1999. After shutting off the system and moving it into the lab, we found the static pressure to be 168 psi, much below the typical 200+ psi. In the three month period, we probably removed and replaced the cold end connections 4-5 times, possibly losing a bit of gas each time.John Jacobs at APD Cryogenics says when they ran a CryoTiger outside overnight at cold temperature, about 15 psi was lost and never recovered. Since we run in cold weather it probably makes sense to check the static pressure in the compressor occasionally (say, once a month in the winter?) and be prepared to recharge if it's low.
Shipping the Compressor
When shipping the compressor, be sure to lock down the motors using the screws in the plastic folder taped to the side.Shipping the Cold End
There's a plastic protective cover that is screwed onto the cold end to help protect it during shipment (it's kept in the 20-inch cabinet in the trailer). This cold end and cover are both placed in a cardboard frame that fits into a cardboard box. This box should then be placed in a larger box with packing material.How hot can it get?
APD says we can heat it up to 80C for bakeout.HOME