Cabinet Removal - Floor-Mounted Systems; Cabinet Replacement; Ac Power And Grounding Requirements - Toshiba Strata DK14 Installation And Maintenance Manual

DK424 Installation

AC Power and Grounding Requirements

10. Install ground wiring, AC and reserve power cabling, and PCB cabling per the
"Recommended Installation Sequence"
11. Fill out cabinet/slot identification labels on each cabinet (see
covers on the cabinets. (The top cover should be installed on the top cabinet.)
Cabinet Removal – Floor-Mounted Systems
This procedure is written on the presumption that the Base Cabinet is the bottom cabinet of
systems with two or more cabinets.
1. Turn the system power OFF, and remove the front and side covers from the cabinet to be
replaced and any cabinets above it. Remove the top cover from the top cabinet if it is to be
replaced
2. Unplug the AC power cord of the cabinet and any reserve power cabling connected to the
power supply. Repeat this procedure for each cabinet above the cabinet to be replaced.
3. If a power strip (RPSB1 or RPSB2)
RCCB2), or Battery Distribution Box (RBDB1 or RBDB2) is connected to the cabinet,
remove it
4. If the cabinet to be replaced is the Base Cabinet (DKSUB424), disconnect all data cables
connected to the Base Cabinet data cable connector.
5. If the cabinet to be replaced is an Expansion Cabinet (DKSUE424), disconnect the data cable
of the cabinet from the data cable connector on the Base Cabinet. Repeat this procedure for all
Expansion Cabinets above the cabinet to be replaced.
6. Disconnect any intercabinet ground wiring or system ground wiring connected to the cabinet.
Repeat this procedure for any cabinets above the cabinet to be replaced.
7. Remove any cabinets above the cabinet to be replaced, and then remove the cabinet to be
replaced.

Cabinet Replacement

To replace cabinets, refer to
AC Power and Grounding Requirements
The system requires a solid earth ground for proper operation and safety. The AC power cord(s)
already contains a conductor for the "third wire ground" provided by the commercial power outlet.
An insulated conductor must connect the frame ground terminal on the Base Cabinet (or the
bottom Expansion Cabinet) to a cold water pipe or the building ground.
Notes
The "third wire ground" ("A" in
the frame ground must comply with the general rules for grounding contained in Article 250 of
the National Electrical Code, NFPA 70, but must not depend on the cord and plug of the
system.
WARNING! Failure to provide ground may be a safety hazard or lead to confusing trouble
5-28
(Figure 5-6).
(Figures 5-23 and 5-26).
"Cabinet Floor Mounting"
Figure
symptoms and, in extreme cases, system failure.
on Page 5-7.
(Figure 5-19), Conduit Connection Box (RCCB1 or
on Page
5-28) must be dedicated. The conductor connected to
Figure 5-11), then reinstall
5-21.
Strata DK I&M 5/99