62.1.3 Rack-Mounting the TPSDThe TPSD can be installed in most relay racks with standard EIA hole spacing. If a relay rack is needed they areavailable for purchase from La Marche. The 4B, 4 and 9 cases are shipped from the factory with the necessarybrackets installed for rear mounting on a relay rack(The same bracket is used for wall mounting). The rackmounting bracket for the 4B and 4 cases allows for mounting on either a 19” or 23” rack. The rack mountingbracket for the 9 case allows for mounting on a 23” or 30” rack.Before installing the charger on the rack locate the conduit entrances and be sure the knockouts on the sides orbottom of the charger are accessible after the charger is rack-mounted.The table and figure below shows rack-mounting options for TPSD.Rack Mounting ProcedureTo rack mount the TPSD, first mount the unit onto therack-mounting brackets using the hardware supplied.Second, install the brackets onto the rack. Provide atminimum 6in (152mm) of air space above and belowto allow for cooling.If you are center-mounting the charger, install the bracket on the front side of the relay rack. If you arerear-mounting the charger, install the bracket to the back side of the relay rack, as pictured in the Figure 4above-left.CaseNumberRearMountingCenterMounting4B Yes(19” rack only) Yes4 Yes(19” rack only) Yes9 No Yes72 No No44 No NoTable 4 - Available Rack Mount ConfigurationsRearMountingCenterMountingFigure 7 - Rack-Mounting Configurations(4B Case)