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+====== Bolometer Cycle ======
+<file>
+SUMMARY OF INSTRUCTIONS FOR BOLOMETER INITIAL COOL DOWN
+)Pump on the bolometer with the turbo pump until a pressure of 10 -5 is
+  achieved.  Secure bolometer from turbo pump.
+)Open(CCW) green Nupro Valve on the bolometer.  Close(CCW) "Pump" and "He3"
+  switches approximately 30 turns.  Retract shafts and secure with vinyl tubing.
+  Tubing is labeled for each shaft.
+)Pre-cool with liquid nitrogen for 1-3 hours, longer is better.  Fill LN2
+  reservoir(outer) first.  After it is full, fill the LHe reservoir(inner).
+  The 3He pressure gauge reads 40 PSI and "Pump Tem" BNC on pre-amp reads
+  >1.35K ohms when the bolometer is at equilibrium temperature.
+)Ensure all 3 pre amp power switches are off.  Replace all 3 batteries in the
+  pre-amp.  Turn on "Power", "Bias" and "Input" switches on the pre amp.
+)Invert the bolometer to dump out the LN2.  Blow helium gas into the helium
+  reservoir to make sure it is empty.
+)Refill the LN2 reservoir(outer) with LN2.  Slowly transfer liquid helium into
+  the helium reservoir(inner).
+)Allow the bolometer to sit at least 4 hours.  The "Pump Temp" BNC on the pre-
+  amp reads approximately 19K ohms.  The "3He Temp" BNC reads about .026V.
+  Close(CW) the green Nupro valve and open(CW) the "Pump" switch.
+START HERE IF THE BOLOMETER IS ALREADY AT LIQUID HELIUM TEMPERATURE.
+)Check liquid helium level.  Retransfer if there is <3 inches left.
+)Besure the pump is on.  Screw the dewar pumping fixture to the liquid helium
+  fill port.
+NOTE:  You will be performing steps 10 and 11 simultaneously.  During pump down
+       and heating, the 3He gauge should go up to 5-15 in/Hg then go back down
+       slowly to about 18 in/Hg.  For the initial cycle, it may go slightly
+       higher, but should not get over 0.  If it does, you are out of liquid
+       helium of the switches are not in the correct positions.
+)Slightly open the large vacuum valve until you hear a hiss.  You are pumping
+   too fast if it frosts more than a foot beyond the hose coupling.  Observe
+   the vacuum gauge.  It should take >20 minutes to reach 100 torr.  When it
+   reaches 100 torr, open the valve slightly more to reach 33 torr in 10-15
+   minutes.  Open/close valve to maintain this rate.  When the gauge reads 33
+   torr, open the large valve all the way.
+)The "Pump Temp" BNC on the pre amp reads 3.83K ohms.  Immediately after
+   startind the pump down, apply 2.5V to the "Heater" BNC on the pre amp.
+   "Pump Temp" resistance should reach 2.5K ohms at the same time that the
+   vacuum gauge reaches 3-6 torr.  Adjust the heater voltage to regulate this.
+   Voltages up to 5V are ok.
+)When the vacuum gauge reaches 3-6 torr and the "Pump Temp" resistance equals
+.5K ohms, disconnect the heater voltage and closed the large vacuum valve.
+)Open(CW) the 3He switch and close the Pump switch in that order.
+)Connect helium gas cylinder to nipple on vacuum system.  Open small vacuum
+   valve and slowly fill vacuum with helium gas until pressure on the large
+   gauge reaches 450 torr.  Close small valve, and put helium gas cylinder away.
+)Remove the pumping fixture from the liquid helium fill port.  Top off both
+   the LHe and LN2 reservoirs and light stuff kim wipes into the openings.
+)Mount dewar on telescope.  Dewar is at operating temperature when the
+   following conditions are met:
+He Temp is approximately .055V
+                               Pump Temp resistance is approximately 17.99K ohms
+                               Vs BNC reads .4-.5V with "Bias" off
+                                            .6-.7V with "Bias" on
+THE MORNING AFTER OBSERVING
+If the bolometer is going to be cycled later in the day by the daycrew or
+yourself, top off the LHe reservoir(inner) and LN2 reservoir(outer).  Leave
+the "Pump" heat switch closed and the "3He" heat switch opened.  Proceed to
+"CONTINUED 3He OPERATION" when you are ready to cycle the bolometer.
+CONTINUED 3He OPERATION
+)Turn off pre-amp power.  Replace 2 batteries on the bottom of the pre-amp.
+  Turn on the pre-amp power.
+)Open(CW) the "Pump" heat switch and close(CCW) the "3He" heat switch.
+)Refill the LN2 reservoir.
+)Go to step 8 of "SUMMARY OF INSTRUCTIONS FOR BOLOMETER INITAIAL COOL DOWN".
+</file>
+Summary by Ed Bufil