Siemens Industry, Inc. 5300 Triangle Parkway, Norcross, GA 30092
A5E33045207A
E87010-A0401-T002-A5-MCC
tiastar
TM
Motor Control Center
Page 4 of 12
2. Removing Existing Unit
Recommended Tools:
Flat-head screwdriver
Phillips-head screwdriver
Multimeter with pointed probes
2.1. Put disconnect operating handle in the PARK position
(See Figure 3).
Figure 3 - Operating Handle Positions
2.2. Unscrew latch located at the bottom of the unit
Rotate the latch until it disengages from the
separator angle (
See Figure 4).
Figure 4 - Disengaging latch
2.3. Transfer pilot device panel from door to slot on unit.
Remove panel by removing the screws located at the
top and bottom of the panel.
2.4. Open vertical wireway door.
2.5. Move unit to “Test” position by opening racking lever in
the top barrier plate
(See Figure 6a).
2.6. Disconnect control and load wiring.
2.7. Remove unit by slightly tilting the front of the unit
downward and sliding it out. This is to insure that
the unit doesn’t get caught on the shelf bracket.
2.8. If rearranging units of different sizes, perform the
following tasks:
2.8.1. Remove all unit support assemblies by unfasten-
ing the screws for each assembly, tilting upward
and sliding out of their holes.
2.8.2. Realign support assemblies as needed.
2.8.3. Include intermediate angles in all spaces
(See Figure 2).
2.8.4. Remove stab hole covers at appropriate heights
and replace covers on unused stab holes.
Stab hole covers should be arranged so that the only
uncovered openings are those to which a unit will be
connected (See Figure 5).
2.8.4a MCCs with automatic shutters; tiastar Shutter
Mechanism Kit 8PG1191-2MA00 is available if
additional shutters are needed.
Stab
Hole
Covers
Figure 5 - Stab Hole Covers
