2
– Installation
Thermo Scientific
Product Manual for the ERS 500 Suppressor
Page 25 of 84
031956-11
For Research Use Only. Not for Use in Diagnostic Procedures.
2.5
Gas Separator Waste Tube for the Dionex ERS 500
The Gas Separator Waste Tube (Item # 045460) is an integral part of the Dionex ERS 500
system. It separates any electrolytic gases generated in the Dionex ERS 500, Dionex ERS 500e
or Dionex AERS 500 Carbonate during electrolysis. The Gas Separator Waste Tube is used to
avoid concentrating the gases (particularly hydrogen gas) in the waste container. The Gas
Separator Waste Tube is shipped in one of the Ship Kits of your system.
Do not cap the waste reservoir.
Minimal hydrogen gas generated by the Dionex ERS 500, Dionex ERS 500e or Dionex
AERS 500 Carbonate is not dangerous unless the gas is trapped in a closed container and
allowed to concentrate. The Gas Separator Waste Tube must be open to the atmosphere
and not in a confined space to operate properly.
2.5.1
Assembly
A.
Assemble and install the Gas Separator Waste Tube and waste line following the steps
below. See
The Auto Suppression Recycle Mode Plumbing Diagram”
.
B.
Use one or two couplers (Item # 045463) to connect two or three lengths of ½” i.d.
black polyethylene tubing (Item # 045462) depending on the waste container depth.
Extend the top of the Waste Separator Tube above the top of the Waste container.
C.
Place the Gas Separator Waste Tube with the 1/8” o.d. tubing attached into the waste
container. Ensure the bottom of the Gas Separator Waste Tube is resting on the floor of
the waste container, the top of the device (where the white 1/8” o.d. tubing meets the
black ½” o.d. tubing) is above the top of the container, and that both the Gas Separator
Waste Tube and the waste container are open to the atmosphere.
2.6
Electrolytically Regenerated Suppressor Current Selection
Lower current is better for the performance of the Dionex ERS 500, Dionex ERS 500e and
Dionex AERS 500 Carbonate suppressors. Excess current through the suppressor devices causes
excess heat generation and over time will cause the ion exchange materials to degrade, thus
shortening suppressor lifetime. Excess current can also cause poor recoveries of certain
analytes, particularly magnesium, manganese, and phosphate. No more than 10% above the
optimum current setting is recommended for extended periods of time.
Cooling the suppressor would provide improved noise and lifetime performance. A temperature
setting of 20˚C for the thermal compartment, such as the DC, is recommended.
2.6.1
Calculating the Optimum Current Setting
The optimum current setting depends on the eluent concentration, sample counterion
concentration, flow rate, and mode of operation. If the sample counterion concentration exceeds
the eluent concentration, use the sample counterion concentration in the calculation discussed
below.
CAUTION
!
SAFETY
!
