Hitachi LQE550, User Manual

Page: 89 / 99

6 MAINTENANCE
6-2
6.1 Maintenance and Inspection
6.1.1 Periodic check
Table 6-1 Periodic Check Items
Item Description Frequency
Unit cleaning Turn off all the power supplies and then cleaner
the interior of the CPU link module through the
slits in its casing. Do not raise dust during
cleaning. Twice/year
or more
Mechanical check Check CPU link module mounting screws, TB
mounting screws, and communication cable
mounting screws for looseness and damage. If a
mounting screw is loose, tighten it. Replace
damaged parts.
Twice/year
or more
6.1.2 Replacing or adding on the module
z What you should get in preparation
① Personal computer (with Hitachi’s S10V CPU LINK System installed in it)
② RS-232C cable (or 10BASE-T cable if the communication module used is an ET.NET
module)
③ New or add-on CPU LINK module (LQE550)
④ The above-mentioned ET.NET module is an optional module and, if it is mounted in place,
may be selected as the type of communication module to be used. For more information,
refer to Section 2.1, “Names and Functions of Each Part,” and Section 3.2, “Mounting the
Module,” in the USER’S MANUAL OPTION ET.NET (LQE520) (manual number
SVE-1-103).