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\documentclass{chowto}

\title{Operating the SOS Shield House Door}
\howtotype{user} % ``expert'', ``user'', ``reference''
%\experiment{Name of experiment} % Optional
\author{W. Vulcan}
\category{sos} % Subject area of this document
\date{May 6, 2003}
\begin{document}

\begin{abstract}
This document describes the operational procedures for opening
and closing the SOS shield house doors.
\end{abstract}

\section{SOS door operation}
To open SOS shield house doors, first confirm that the appropriate breakers in
breaker panels on right side of carriage are "on".

\subsection{Opening the Door}
Then open the doors on the power
panel at right rear of carriage, then close the right hand door, making sure
that the switch handle on outside of the door engages switch shaft.  Leave left
door open. Operate switch handle to turn on 480 volt power. Then watch the message
panel on orange plc box near left end of top row of modules. Message panel
should be blank. If any message appears, STOP and call/page
Steve Hickson or
Bill Vulcan.  If panel is blank, proceed.
On exterior of right hand door, select
either pump \#1 or pump \#2, then press green "on" button below pump
selector switches. Note sound of pump. Go up S.O.S. stairs to walkway in
front of doors. Insert enable key in control box, and turn to "on"
position. Press and hold "open" button. Button must be depressed for - 5
minutes, 40 seconds to open doors completely. While opening doors, watch
door hydraulic cylinders; cylinder movement should be synchronized. lf
differential movement is observed, release "open" button, hit "emergency
stop'' button and call/page as above. Doors will stop automatically at
full open position. If doors will be open for more than a few minutes,
return to floor level power panel and turn pump off with the red "off' button
below the pump selector switches, then turn off 480 volt power with switch on
exterior of right hand door. 
\subsection{Closing the Door}
If the pump is not on, follow the above procedure to turn it on.
Close the doors by pressing
and holding "close" button for - 5 minutes, 40 seconds. Doors will stop
automatically when fully closed. When doors are closed, turn enable key to
"off' and remove key from control box. Return to 480 volt panel, turn off
pump, and turn off 480 volt power. If 480 volt power was turned off while
doors remained open for an extended period, 480 volt power must be turned
on to close the doors as described above. Always observe message panel on
plc after turning on 480 volt power. Never proceed If any message is
displayed.
\subsection{Warnings}
NEVER LEAVE 480 VOLT POWER ON DURING BEAM PERMIT. 

NEVER USE "STANDBY" MODE. 

\end{document}

% Revision history:
% $Log: open_sos_door.tex,v $
% Revision 1.3  2003/06/12 16:18:51  saw
% Minor changes.
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% Revision 1.2  2003/05/07 14:43:00  saw
% Some editing and break into subsections
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% Revision 1.1  2003/05/07 14:41:57  saw
% Converted from Word document with minimal editing.
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