At line 2 added 9 lines. |
+ It is highly recommended to use the automatic condensing scripts in SEA. |
+ Click on "sorbpump", when "readyforpump", make sure that the IVC is connected |
+ to a running turbo pump, and the valve and the IVC space is open. |
+ |
+ The automatic script is doing a sligthly different condensing procedure than |
+ described below. |
+ |
+ * If not yet done, the IVC has to be pumped. Do not do that before the sorb T |
+ is at 4K. |
Line 6 was replaced by line 15 |
- * Cool the 1 K pot to a temperature below 3 K. With the |
+ * Cool the VTI ("1 K pot" thermometer) to a temperature below 3 K. With the |
Line 9 was replaced by line 18 |
- pump of about 20 mbar. |
+ pump of about 12 mbar. |
Line 12 was replaced by line 21 |
- * Open the green valve marked "out" below the dump. The dump is the |
+ * Open the green valves marked "out" and "in" on the dump. The dump is the |
Line 15 was replaced by lines 24-26 |
- RAISE). |
+ RAISE). |
+ * Make sure that the heater on the mixing chamber is off and that |
+ the setpoint is zero. Switch off the still heater also. |
Line 18 was replaced by line 29 |
- * The reading on G2 is proportional to the amout of mixture in the |
+ * The reading on G2 is proportional to the amount of mixture in the |
Lines 23-26 were replaced by lines 34-36 |
- * Open a little valve 12A (4.0 % to start). |
- * While the pressure reading on G1 should always be below about 400 mbar, |
- Valve 12A can bae opened gradually, and opened completely, when the |
- reading on G2 drops below 350 mbar. |
+ * Open V12A a little (4 %) to allow the mixture pass the trap slowly. |
+ * When the pressure reading on G1 stabilizes or decreases, open valve 12A |
+ completely. |
Removed line 31 |
- |
Lines 39-40 were replaced by line 48 |
- and close valve 14 again, but make sure that the pressure on G1 does |
- not increase above 350 mbar. |
+ and close valve 14 again. Do that several times. |
Line 42 was replaced by line 50 |
- raise above 50 mbar. Leave the valve open until the P1 drops below 0.1. |
+ raise above 50 mbar. Leave the valve open until P1 drops below 1. |
Removed line 48 |
- |
Lines 50-51 were replaced by lines 57-58 |
- the flow on the condenser line might falls below 100 (black display below |
- the valve panel). |
+ the flow on the condenser line might fall below 100 (black display below |
+ the valve panel, on DIL1 only). |
At line 53 added 2 lines. |
+ |
+ [DIL1/igh.png] |