? GC-2014 Capillary Column

GC-2014 Column Oven

Installing the Capillary Column

 

Tools Required

10x12 wrench (standard accessory), 6x8 wrench (standard accessory), capillary cutter (option, Part No. 221-50595-91)

Procedure

1

Shutdown the system and stop the gas supply for detectors.

2

Pull the lever on the left hand side of the door to open the column oven.

3

No make-up line type

With make-up line type

Fit the capillary adapter to the DET side and tighten it with a wrench.

(Two types of capillary adaptors are available: ones with and without a makeup gas branch line.)

 

 

 

 

 

 

 

 

 

 

For the type with makeup gas line, tighten the capillary adapter and then connect the makeup gas line to the injection port.

 

Note:

For the system configuration that allows for the use of both the packed column and the capillary column, use the AFC for the packed column, which is not used for the capillary analysis, for sending makeup gas. In this case, you need to change the dual AFC setting to the makeup gas mode.

(Changing AFC Control Mode)

Supplying makeup gas from the injection port using the capillary adaptor with  make-up line type may have an adverse effect on analysis, such as an increase in noise due to the effects of organic substances from the graphite ferrule or due to contamination inside the injection port, and may prevent the system from fulfilling its specifications. Therefore please refer to the Operation Manual before using it.

4

 Pass the capillary column entrance side through a hexagon cap nut and the graphite ferrule.

Cap nut 221-16325-01

Graphite ferrule 0.5mm 221-32126-05

Graphite ferrule 0.8mm 221-32126-08

 

5


Fix the graphite ferrule provisionally using the graphite fixing jig. When doing so, let the capillary column protrude about 10mm from the graphite fixing jig, and cut the column using a capillary cutter etc. at the tip of the fixing jig. If the fixing jig for the SPL is used, the position will be fixed at 34mm from the column tip.

Capillary cutter 221-50595-91

 

Caution:

Change the graphite fixing position to 15mm if intending to conduct splitless analysis using a wide-bore column of 0.53mm inner diameter.

 

6

Using the fixing jig, fix the graphite ferrule on the detector side of the capillary column as well. Since, normally, a locking nut is used, a cap nut need not be used ahead of the graphite ferrule (if analyses are conducted at column temperatures over 350 deg.C, it may be a good thing to reduce the thermal capacity by using a small cap nut in the same way as the entrance side).

For the FID/FTD-2014 99mm (make it 2 to 3mm shorter if a metal capillary column is used.)
For the FTD-2014c 69mm (make it 2 to 3mm shorter if a metal capillary column is used.)
For the FPD 120mm
For the ECD 75mm

Remove the fixing jig once the position of the graphite ferrule is set.

 

Note:

  1.  In some case, peak shape may be improved, if you change the column insertion length from 99 mm to 112 mm for the FID/FTD-2014 when using the adapter type equipped with makeup gas line.

  2.  If you are using smaller FID jet (for packed column), you can not insert the column by the depth above. In such case, pull it down 1mm from the position the column touches the top.

7

Hang the column on the column hanger.

8

Insert the column into the sample injection port from the column oven side.

9


 After tightening the nut by hand, fix in place by turning the nut another half-turn using the wrench.

 

10



In the same way, insert the column into the detector from the column oven side, and after turning the locking nut by hand to tighten it, fix it by tightening it about a half-turn further with the wrench.

11

Close the column oven door and start up the system.

Maintenance Top ; GC-2014 Main ; GC-2014 Detector ; GC-2014 Sample Injection Port ; GC-2014 Column Oven