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 \chapter{Procedures}
 
+\section{Calibrating the 407A}
+
+Calibrating the 407A
+
+You may sometimes notice that the zero position changes dramatically from sensitivity to
+sensitivity with the 407A. If this happens, iterate through the following until zero stays
+consistent:
+
+Use the fine adjust (knob on side) to zero the 407A on the highest sensitivity
+
+Use the front adjust (flathead screwdriver needed) to zero on the lowest sensitivity
+
+\clearpage
+\section{Lytron Kodiak RC006}
+
+We have one Lytron Kodiak RC006:
+Model Number RC006G03BB1C002
+Serial Number 739383-02
+
+Regular Chiller Maintenance:
+\begin{denumerate}
+  \item Gather supplies.
+    \begin{enumerate}
+      \item 1 gallon distilled water (do not use deionized)
+      \item 1 gallon Nalco 460-PCCL104 (the pink stuff)
+    \end{enumerate}
+  \item Drain system completely.
+    \begin{enumerate}
+      \item Turn off chiller.
+      \item Break tubing at push-to-connect, plugging return.
+      \item Allow chiller to run until liquid stops flowing. You will get a pressure error, ignore
+        (silence) it.
+      \item Use tube to mouth-syphon remaining liquid from within chiller
+      \item Reconnect at push-to-connect
+    \end{enumerate}
+  \item Fill chiller with distilled water (should require <1 gallon), let run for 30 minutes.
+  \item Drain system again.
+  \item Replace filter.
+  \item Fill system with one gallon Nalco 460-PCCL104 (the pink stuff).
+  \item Turn chiller on, top-off with distilled water.
+  \item Record maintenance, order new supplies for next time if necessary.
+\end{denumerate}
+
+In the past we have had trouble with low flow errors upon system startup.  %
+These seem to have been fixed by adding a “high” flow loop connecting the outlet and inlet of the
+chiller.  %
+Ideally the pressure drop across this loop is sufficient to still drive fluid through the laser.  %
+
+% TODO: figure
+
+\clearpage
+\section{PolyScience 6000 Series}
+
+We own two PolyScience chillers---different models but functionally equivalent.
+
+Grey: Serial Number 3E1161245
+
+White and Blue: Serial Number 4K1050550
+
+Regular Chiller Maintenance:
+\begin{enumerate}
+  \item Gather supplies
+\end{enumerate}
+
+maintenance directions
+Gather supplies
+Filter - sold in the stockroom
+1 gallon of Nalco 460-PCCL104 (the pink stuff)
+Drain system completely
+Disconnect red water line and allow chiller to pump water out.
+Push nipple of male end with flat object so check valve is released
+Take off of filter
+Push down to allow water out
+Check filters
+If air filter dirty, wash with water (let dry after washing)
+If water filter is dirty, replace
+Reassemble, fill with Nalco 460-PCCL104 (the pink stuff)
+Turn chiller on and top-off.
+
+\section{NesLab Merlin M33}
+
+
+
 \section{Aligining TOPAS-C}
 
 \section{Aligning Spitfire PRO}