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 <<O>>  Difference Topic Shutdown (r1.6 - 12 Feb 2008 - DavidRose)
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This procedure covers the basic steps for shutting down the 140 Foot telescope drives in preparation for stowing at survival position, maintenance, or as directed.

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This procedure covers the basic steps for shutting down the 43Meter telescope drives in preparation for stowing at survival position, maintenance, or as directed.

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-- DavidRose - 27 Mar 2007

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-- DavidRose - 12 Feb 2008


 <<O>>  Difference Topic Shutdown (r1.5 - 27 Mar 2007 - DavidRose)
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NOTE Skip steps 1-4 if the antenna is already at the Stow position with drives disabled.
1 Take control via the Antenna Control Software with the TAKE command. Skip if you already have control.
2 Switch to Position mode with the system mode command. Skip if already in position mode.
3 Enable drives/release brakes if not already done.
4 Type stow then press enter. The antenna will move to stow position (00 Hour angle/38.54 Degs Dec) then disable drives automatically upon arrival.
5 Set the Pol/Dec Gear Reducer brakes.
6 Press the Control Off button.
7 Press the OFF button for both axes.
8 Press the Anti-Backlash Off button for both axes.
9 Press the Bleed button for both axes.
10 Set the Dec Stow brake (sets both Dec and Polar axis brakes).
11 Remove the antenna control lockout key and return it to the Lockout/Tagout box.
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1 Press the Halt button on the main console window. Skip if you already have manual control.
2 Press the Stow button. The antenna will move to stow position (00 Hour angle/38.54 Degs Dec) then set the gear reducer brakes.
3 Press the Idle button if you need to set the stow brakes. Also sets the hydraulic system to bleed.
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12 If observing was in progress, add a log entry using the DISPATCH/TECH menu options of RSCREEN noting the time the shutdown occurred as well as when observing resumed.
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4 If observing was in progress, add a log entry using the DISPATCH/TECH menu options of RSCREEN noting the time the shutdown occurred as well as when observing resumed. Note in OpsLog as well.
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-- DavidRose - 13 Oct 2006

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-- DavidRose - 27 Mar 2007


 <<O>>  Difference Topic Shutdown (r1.4 - 13 Oct 2006 - DavidRose)
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  • Add an entry to the 43meter log (within the RSCREEN GUI using the DISPATCH/TECH menu options) anytime observing is interrupted.
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12 If observing was in progress, add a log entry using the DISPATCH/TECH menu options of RSCREEN noting the time the shutdown occurred as well as when observing resumed.
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-- DavidRose - 25 Oct 2005

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-- DavidRose - 13 Oct 2006


 <<O>>  Difference Topic Shutdown (r1.3 - 25 Oct 2005 - DavidRose)
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NOTE Skip steps 1-4 if the antenna is already at the Stow position.
1 Enable drives/release brakes if not already done.
2 Take control via the Antenna Control Software with the TAKE command. Skip if you already have control.
3 Switch to Position mode with the system mode command. Skip if already in position mode.
4 Type the STOW command. The antenna will move to stow position (00 Hour angle/38.54 Degs Dec) then release control upon arrival.
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NOTE Skip steps 1-4 if the antenna is already at the Stow position with drives disabled.
1 Take control via the Antenna Control Software with the TAKE command. Skip if you already have control.
2 Switch to Position mode with the system mode command. Skip if already in position mode.
3 Enable drives/release brakes if not already done.
4 Type stow then press enter. The antenna will move to stow position (00 Hour angle/38.54 Degs Dec) then disable drives automatically upon arrival.
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-- DavidRose - 24 Oct 2005

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-- DavidRose - 25 Oct 2005


 <<O>>  Difference Topic Shutdown (r1.2 - 24 Oct 2005 - DavidRose)
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  • Stow/Survival position for the 140 Foot antenna is: 00 Hour angle/38.54 Degs Declination
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  • Stow/Survival position for the 140 Foot antenna is: 0.0 Degs Hour angle / 38.438 Degs Declination
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NOTE Skip steps 1-3 if the antenna is already at the Stow position.
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NOTE Skip steps 1-4 if the antenna is already at the Stow position.
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3 Type the STOW command. The antenna willl move to stow (00 Hour angle/38.54 Degs Dec) then release control upon arrival.
4 Set the Pol/Dec Gear Reducer brakes.
5 Press the Control Off button.
6 Press the OFF button for both axes.
7 Press the Anti-Backlash Off button for both axes.
8 Press the Bleed button for both axes.
9 Set the Dec Stow brake (sets both Dec and Polar axis brakes).
10 Remove the antenna control lockout key and return it to the Lockout/Tagout box.
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3 Switch to Position mode with the system mode command. Skip if already in position mode.
4 Type the STOW command. The antenna will move to stow position (00 Hour angle/38.54 Degs Dec) then release control upon arrival.
5 Set the Pol/Dec Gear Reducer brakes.
6 Press the Control Off button.
7 Press the OFF button for both axes.
8 Press the Anti-Backlash Off button for both axes.
9 Press the Bleed button for both axes.
10 Set the Dec Stow brake (sets both Dec and Polar axis brakes).
11 Remove the antenna control lockout key and return it to the Lockout/Tagout box.

 <<O>>  Difference Topic Shutdown (r1.1 - 24 Oct 2005 - DavidRose)
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%META:TOPICINFO{author="DavidRose" date="1130161500" format="1.0" version="1.1"}% %META:TOPICPARENT{name="TelescopeOperations"}%

TELESCOPE OPERATIONS

SHUTDOWN

General

This procedure covers the basic steps for shutting down the 140 Foot telescope drives in preparation for stowing at survival position, maintenance, or as directed.

Warning

Ensure personal safety through effective lockout/tagout procedures. Ensure the antenna is cleared for movement before releasing hydraulic drive brakes.

Info

  • For the purpose of this procedure, the terms Stow and Survival are synonomous.

  • Stow/Survival position for the 140 Foot antenna is: 00 Hour angle/38.54 Degs Declination

Stowing Antenna for Shutdown

STEP ACTION
NOTE Skip steps 1-3 if the antenna is already at the Stow position.
1 Enable drives/release brakes if not already done.
2 Take control via the Antenna Control Software with the TAKE command. Skip if you already have control.
3 Type the STOW command. The antenna willl move to stow (00 Hour angle/38.54 Degs Dec) then release control upon arrival.
4 Set the Pol/Dec Gear Reducer brakes.
5 Press the Control Off button.
6 Press the OFF button for both axes.
7 Press the Anti-Backlash Off button for both axes.
8 Press the Bleed button for both axes.
9 Set the Dec Stow brake (sets both Dec and Polar axis brakes).
10 Remove the antenna control lockout key and return it to the Lockout/Tagout box.
NOTE The antenna is now stowed.

-- DavidRose - 24 Oct 2005


Topic Shutdown . { View | Diffs | r1.6 | > | r1.5 | > | r1.4 | More }
Revision r1.1 - 24 Oct 2005 - 13:45 GMT - DavidRose
Revision r1.6 - 12 Feb 2008 - 18:39 GMT - DavidRose 		Content copyright © 1999-2007 by the contributing authors.
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