Tekran Sample Filter Changeout

 

Purpose:  Replace the 2537 sample filter and the 1130 denuder module sample filter.

 

Required Equipment:  Two Filter Wrenches

                                           47mm 1um Teflon Filter

                                           47mm Baked Quartz Filter

 

Reference:  SOPMAN Pages XX-XX

 

 

Before changing the filters take notice of the sampling sequence.  The status flag for Hg(0) is “0”.  If the Tekran is running in Hg(0) mode then put it in stop mode.  If the Tekran is in any other mode then wait for it to finish the cycle before putting it into stop.

 

 

Replacing the 2537 Sample Filter

 

  1. To replace the 2537 sample filter put one of the filter wrenches on the outlet of the filter housing and the other filter wrench on the inlet.  Note:  In most cases the outlet of the filter is already sitting in a filter wrench.  This makes changing the filter possible with the use of only one filter wrench.

 

 

  1. Using the two wrenches loosen the filter housing.  The tubing connected to the top or inlet side of the filter housing may need to be loosened so that the tubing doesn’t twist.
  2. After the two halves of the filter housing are separated pull the old filter off and replace it with a new 1um Teflon Filter with the smooth Teflon side up & the fibrous backing side downstream.  (The Teflon filter is made by Pall and is a 47mm – 1um filter.  The product number is R2PL047 and comes in a package of 50.  If they are ordered through VWR the part number is 28139-125.
  3. Put the filter housing back together and cinch it down using the filter wrenches.  Be sure to tighten any tubing loosened during the changeout.
  4. The 2537 sample filter changeout is now complete

 

 

Replacing the 1130 Denuder Module Sample Filter

 

  1. To replace the 1130 denuder module sample filter put one of the filter wrenches on the outlet of the filter housing and the other filter wrench on the inlet.

 

 

  1. Using the two wrenches loosen the filter housing.  The tubing connected to the top or inlet side of the filter housing may need to be loosened so that the tubing doesn’t twist.  It is very important that the tubing doesn’t twist.  If it does it may break the RPF that is upstream of the filter.
  2. After the two halves of the filter housing are separated pull the old filter off and replace it with a new Baked Quartz Filter with the smooth side downstream.  The Baked Quartz filters are currently being shipped by Matt Landis.  The filter is made by Fisher Scientific.  The product number is 09-874-89 and come in a package of 100.
  3. Put the filter housing back together and cinch it down using the filter wrenches.  Be sure to tighten any tubing loosened during the changeout.
  4. The 1130 denuder module sample filter changeout is now complete.

 

 

When all filters have been changed be sure to put the Tekran back into RUN mode.