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44
Troubleshooting and Test
Functions
This chapter describes the instrument’s built in troubleshooting and test
functions.
Status Indicators
The quaternary pump is provided with two status indicators which indicate
the operational state (prerun, run, and error states) of the quaternary pump.
The status indicators provide a quick visual check of the operation of the
quaternary pump (see “Status Indicators” on page 45).
Error Messages
In the event of an electronic, mechanical or hydraulic failure, the quaternary
pump generates an error message in the user interface. The following pages
describe the meaning of the error messages. For each message, a short
description of the failure, a list of probable causes of the problem, and a list
of suggested actions to fix the problem are provided (see “Error Messages”
on page 47).
Pressure Test
The pressure test is a quick test designed to determine the pressure tightness
of the system. After exchanging flow path components (e.g. pump seals or
injection seal), use this test to verify the system is pressure tight up to 400 bar
(see “Pressure Test” on page 82).
Leak Test
The leak test is a diagnostic test designed to determine the pressure tightness
of the quaternary pump. When a problem with the quaternary pump is
suspected, use this test to help troubleshoot the quaternary pump and its
pumping performance. The following sections describe these functions in
detail (see “Leak Test” on page 88).