Maintenance
SPECTRO GENESIS FES 27 — 17.07.2019
— 45
6.10
Pump tubing maintenance
Damaged or worn pump tubings adversely affect the performance of the
instrument. Therefore, the tubings must be checked at regular intervals (each time
before starting work) and replaced as necessary.
In order to replace the tubing, proceed as follows:
1.
Flush the sample introduction system for approx. 10 minutes with a suitable
blank solution, e.g., distilled water for aqueous applications.
2.
Switch off the plasma.
3.
Loosen the pressure clamps of the peristaltic pump and relieve the pump
tubings by removing them from the retaining clamps.
4.
Fold the pressure clamps aside, disconnect the tubing from the pump head
and remove the connected capillary tubes.
5.
Connect the capillary tubes with the new pump tubing.
While doing so, observe the correct inside diameter. The required inside
diameter and consequently the pumping capacity depends on the
nebulizer used. The following applies to the Cross-Flow nebulizer
included in the scope of supply as a standard item:
Sample introduction channel:
Inside diameter 0.89 mm; 0.035"
(Orange-orange stops).
Outlet channel:
Inside diameter 1.8 mm; 0.071"
(Blue-green stops).
6.
Put the tubings around the pump head, attach the stops to the retainer
brackets and close the pressure clamps.
7.
The pressure is set as follows, using the adjusting screws:
I.
Switch on the pump and aspirate a suitable blank sample, e.g., distilled
water for aqueous applications.
II.
Select the Analysis view. Activate the pump by clicking on the "Pump"
button.
III. Loosen the adjusting screws until no liquid is pumped any more.
IV. Now increase the pressure until the pump just starts pumping liquid.
V. Adjust the correct pressure by tightening the respective adjusting screw
by half a turn.
Replacement of pump tubing is now complete.
Summary of Contents for FES 27
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