Thermo Scientific Dionex, Operator'S Manual

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Dionex Integral Systems Operator’s Manual
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Doc. 065250-06 03/2020
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Leaking pump head
1. Tighten the pump fitting connections. Dry the components.
2. If the pump head continues to leak, the piston seal may be defective.
Replace the piston seal (see Section 10.4 ).
9.4 Air and Gas Leaks
Air leaks, which can cause excessive air consumption, are usually audible. Gas
leaks cause sluggish liquid delivery, unreliable pump operation, and excessive gas
consumption.
Minor gas leaks can sometimes be felt, while major gas leaks are usually audible.
To detect a minor gas leak, shut off the gas at the source and then check the
pressure gauge for a drop in pressure. Repeat as often as necessary until the leak is
found.
NOTE Do not use Snoop or other dilute soap solutions for leak
detection. This will contaminate the tubing. Water may
be used, if you want.
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Leaking fitting
1. If the fitting is stripped, cross-threaded, or otherwise damaged, replace it.
If the fitting is not damaged, securely tighten it.
2. If the leak continues, cut the tube off the fitting and replace the fitting.
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Leaking standard or reagent reservoir
Sluggish liquid delivery is usually due to a helium or nitrogen leak from a
reservoir. Follow the strategy above to eliminate leaks at fittings and caps.
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Damaged tubing
Over time, gas tubing can become compromised by chemical fumes (for
example, eluent vapor in the air lines to the NOWpak containers). If this
occurs, replace the tubing.