5800 Refrigerated Sampler Service Guide - Isco

5800 Refrigerated Sampler Service Guide
Section 1 Introduction and General Maintenance
1.6 Major Assembly
Removal and
Replacement
Teledyne Isco designed the sampler for easy field replacement of
its sub-assemblies. This expedites the repair and saves shipping
costs. These sub-assembly modules should be replaced by trained
personnel.
The sub-assemblies are:
• Pump Module (Section 2.2)
• Distributor Module (Section 2.6)
• Refrigeration Module (Section 3.4.5)
• Control Panel Module with Main CPU board
(Section 4.4)
• Power Supply (Section 4.5)
The removal and replacement instructions include general steps
that apply to all modules, and detailed instructions for each
module.
Before proceeding with the detailed instructions in the following
sections, familiarize yourself with these general steps for the
removal and replacement of a module.
1.6.1 Removing a Module 1. Unplug the AC power cord.
2. Remove the mounting screws.
3. Carefully lift the module away from the refrigerator body.
4. Label the wires with the location of their connection, then
disconnect the wiring connectors.
1.6.2 Replacing a Module 1. Ensure that the gasket seal is in place. The gasket surface
must be smooth, clean, and free of nicks, cracks, etc. If any
imperfections are visible, replace the seal.
2. Reconnect the wiring connectors, using care to correctly
pair the connectors and to correctly align the keys and
pins.
3. Ensuring that no wires are caught between the module
and mounting surface, align the module over the mounting
holes and secure it with the mounting screws.
4. Apply AC power and turn on the sampler.
5. After replacement, test the new module using the appropriate
diagnostic tests in Section 5.1.
1.6.3 Safety Precautions There are several precautions you should observe before
attempting to remove and replace a module:
WARNING
Removing a module exposes you to electrical and
mechanical hazards. Always unplug the AC power cord
before attempting to remove any module. Only trained
service personnel may remove or replace these modules.
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