- PCME STACK 990 MANUAL: 63 -
• Wipe the face panel of the control unit with a damp (not wet) cloth (do not use cleaning
agents).
• Check the “Quality Assurance/Self Tests” display in the controller. All results should show
PASS.
• Watch the instrument performance with the process running and ensure that the process
is still being followed correctly. This is best done by downloading data using PCME Dust
Reporter software. Compare the data before and after cleaning: if cleaning has
significantly altered the reading then more regular maintenance may be required.
• Test outputs from the control unit as required. Check with Control Room before testing
any outputs. Note: outputs are disabled in Maintenance Mode.
• Test 4-20mA outputs for correct output current (see “4-20mA Settings” section in “Initial
Settings” chapter)
• Test relay outputs will activate correctly in case of all alarm conditions (see “Relay
Settings” section in “Initial Settings” chapter).
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