ABB SafeGear MCC Installation, Operation And Maintenance Manual page 27

Motor control center
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I N S TA L L AT I O N , O P E R AT I O N A N D M A I N T E N A N C E M A N U A L
1. 3/8"-16
UNC X 1.0 in
SAE grade 5 screws, 30-40 lb-ft torque to bolt MCC Plenum
02
Front View. The exhaust vent can be righ side exit or left side exit (as shown).
Building wall.
3
Vent exhaust.
04
Note:
All bolts must be tightened; a loose section could let toxic gases escape into the building.
Do not remove exhaust mesh; incandescent particles might escape the MCC in case of an arc fault.
Recommended plenum exhaust "keep clear area"
Diameter = 96in [2.44m]
Clear area
05
Optional aditional plenum sections.
2
3/8"-16 UNC X 1.0 in
Length = 180in [4.57m]
2. 3/8"-16
UNC X 1.0 in
Exhaust vent assembly
03
Opening must be sealed weather tight
(by others).
24

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