Doc No.
1
November 2018
Thermo Scientific Dionex DRS 600, ERS 500e and ERS 500 Carbonate
Suppressor Installation Checklist
Thank you and congratulations on your recent purchase of a DIONEX suppressor product from
Thermo Fisher Scientific.
To ensure a smooth installation experience, please review and
complete the following actions prior to installing the new suppressor:
Complete this Installation Checklist
Sections I-II
and check the box next to it to indicate
completion. If needed, complete
Section III
and check the box next to it to indicate completion.
If the instruction is unclear at any step, refer to the
Installation Summary
at the end of this
document.
I.
Backpressure Check of Detector Cell and Backpressure Coils
Before putting the new suppressor to use, we recommend measuring the backpressure
to the suppressor, ensuring that the suppressor is not exposed to high backpressure
inadvertently. Care should be taken not to exceed 100 psi of backpressure to the
suppressor (150 psi for 2 mm anion versions). The backpressure to the suppressor comes
from any tubing, detector cell, backpressure coils, or any other components that are fluid-
connected to the eluent out port of the suppressor.
Step 1:
Disconnect the
column out
/
eluent in
tubing from the old suppressor and
direct it to waste. Turn on the pump at the application flow rate for 10 minutes.
Record the system pressure 1 (
P
1
) and turn off the pump.
□
P
1
, ________ psi
□
Step 2:
Connect the
column out/eluent in
tubing to the detector cell
inlet
,
remove
the backpressure coils after the detector cell if installed, and direct the detector
cell
outlet
tubing to waste. Turn on the pump at the application flow rate for 10
minutes. Record the system pressure 2 (
P
2
) and turn off the pump.
□
P
2
,
_________psi
□
Calculate the backpressure across the detector cell (
BP
1
):
BP
1
=
P
2
–
P
1
= ________psi
The backpressure of the detector cell is typically
≤
70 psi
at a flow rate of 2
mL/min. If the backpressure exceeds this specification, see
Detector Cell
Backflush
Section
□
Step 3:
Connect the recommended number of backpressure coil(s) (see table
below) to the detector cell
outlet
and direct the backpressure coil
outlet
to waste.
Turn on the pump at the application flow rate for 10 minutes. Record the system
pressure (
P
3
) and turn off the pump.
□
