Barrick Lab :: FreezerFailure

---+++ Sensaphone Protocol
The sensaphone is the alarm monitor connected to both of the -80C freezers in MBB. Below is an overview of the current settings and the expected time line in the event of a qualifying problem.
   1 An alarm condition exists for either freezer for 3 seconds or longer triggering an alarm with the sensaphone.
      * Once the alarm is triggered it has to be acknowledged, even if the problem correct's itself
      * Example: Power goes out in MBB and the backup generators do kick on for 65 seconds. 60 seconds after power goes out the freezer will go into an alarm mode. 3 seconds later this will trigger the sensaphone alarm. The backup power kicks on 2 seconds later. 3 minutes later, the sensaphone begins making phone calls saying there was an alarm but is currently "OK".
   1 Sensaphone waits __3 minutes__ for someone to acknowledge the alarm locally.
      1 This is done by pressing the large red 'alarm/cancel' button on the sensaphone unit. This can be done at anytime to stop the phonecalls from going out.
   1 Assuming alarm is not acknowledged, the sensaphone calls the next person on the list and plays a recording __3 times__ describing where the problem is.
      1 At the end of the recording the sensaphone prompts for and gives 10 seconds to enter the acknowledgement code. The code is "555"<br> *NOTE* The acknowledgment code is not on the recording.
      1 After a second prompting for the acknowledgment code, the sensaphone will disconnect the call. Anyone can call (512) 471-3344 and enter "555" to stop the phone calls from going out.
   1 The sensaphone waits __5 minutes__ before placing a call to the next person on the list as above. 
   1 The process repeats until the alarm is acknowledged or a total of __100__ is made.

The call list order is currently:
   * Simon
   * Jeff
   * Dacia
   * None programmed (but available if someone wants to volunteer) 

Qualifying problems:
   * Temperature rises above -65C.
   * Temperature falls below -90C.
   * Loss of power for more than 60 seconds.
Non-Qualifying problem of note:
   * Door being left ajar. While the alarm will sound locally for the freezer itself, it will not trigger a call regardless of if the alarm is "silenced" on the freezer.



---+++MBB Freezer Failure

There is a backup -80 located in Equipment Room 2.132. If you need to use it please make sure all of your materials are properly labeled. Please post your lab / contact information on the front of the freezer, email building manager Butch Cunningham (butch.cunningham@austin.utexas.edu) letting him know that you are using the freezer and what the anticipated use time will be.<br>

If we need to move our items to any freezer follow the procedure outlined below: <br>

 1.  Affix a label to the outside of the freezer stating which shelf(ves) you are using. <br>
 2.  Label your materials. <br>
 3.  Be aware that as the door will be opened continually it will go into alarm, which will be received by the alarm monitoring shop. <br>
 4.  Please call them BEFORE you start the transfer of materials at 471.3935 to warn them that they needn't therefore call Rob (building manager) at 2.00 in the morning. <br>

5-16-14 According to Rob the outgoing phone number for the MBB freezer is  (512) 471-3344.<br>
10-8-15 Verified as phone number




---+++Preventive maintenance

Try to minimize the amount of time that the freezer door is open; if necessary, remove the rack or box from freezer, close door, find your stuff, and return rack/box to freezer.  <br>

*Maintenance checklist*		
		
|Action|  Monthy  |  Yearly  |
|Check and clean probe cover, gaskets, hinges and lid(s) of ice and snow|  yes  |    |	
|Check air filter|  yes  |    |		
|Check condenser fan motor for unusual motor noise or vibration|    |  yes  | 


To clean lid gasket use a soft cloth to remove any frost build-up from the gasket, sub-lids and lids.  Replace and clean lids.  To clean lids use warm water to remove ice and allow to dry. <br>

To clean air filter and/or condenser use a vacuum to remove any dust from the filter/condenser fins.  Use care not to damage the condenser fins. <br>
This topic: Lab > WebLeftBar > InternalList > FreezerFailure
Topic revision: r8 - 2018-06-01 - SimonDAlton