User Manual

25
©2002 Dresser, Inc. all rights reserved.
ROOTS, RAM, URAI and WHISPAIR are trademarks of Dresser, Inc.
Dresser Design and Universal RAI are registered trademarks of Dresser, Inc.
Blower
Frame
Size
Fronts Backs
Each End
Without
Wavy Spring
Gear End
Without Spring
Installed
Required
End Float
Inlet
Center Discharge
Impeller Tips to CylindersEnd Clearance
Impeller Lobes
at 45°
Min-Max Min-Max Min-Max Min-Max Minimum Min-Max Min-Max Min-Max
404 .012-.014 .006-.009 .003-.005 .003-.008 .003 .004-.006 .002-.004 .002-.004
(.31-.36) (.15-.23) (.08-.13) (.10-.15) (.08-.20) (.08) (.05-.10) (.05-.10)
406 .012-.014 .006-.009 .003-.005 .007-.012 .006 .005-.007 .003-.005 .002-.004
(.31-.36) (.15-.23) (.08-.13) (.15-.30) (.13) (.13-.18) (.08-.13) (.05-.10)
409 .013-.015 .006-.009 .003-.005 .013-.018 .008 .005-.007 .003-.005 .002-.004
(.33-.38) (.15-.23) (.08-.13) (.31-.43) (.17) (.13-.18) (.08-.13) (.05-.10)
412 .013-.015 .006-.009 .003-.005 .016-.021 .011 .006-.008 .004-.006 .004-.006
(.33-.38) (.15-.23) (.08-.13) (.36-.48) (.28) (.15-.20) (.10-.15) (.10-.15)
418 .013-.015 .006-.009 .003-.005 .022-.027 .017 .008-.010 .004-.006 .004-.006
(.33-.38) (.15-.23) (.08-.13) (.51-.64) (.38) (.20-.25) (.10-.15) (.10-.15)
616 .012-.014 .006-.008 .004-.006 .017-.022 .011 .009-.011 .004-.006 .002-.005
(.31-.36) (.15-.20) (.10-.15) (.38-.51) (.28) (.23-.28) (.10-.15) (.05-.13)
624 .012-.015 .006-.009 .004-.006 .024-.029 .018 .013-.015 .005-.007 .002-.005
(.31-.36) (.15-.23) (.10-.15) (.61-.74) (.46) (.33-.38) (.13-.18) (.05-.13)
NORMAL CLEARANCES FOR RAM
™
-J & RAM
™
-GJ WHISPAIR
™
BLOWERS - INCHES (MM)
NORMAL CLEARANCES FOR RAM
™
BLOWERS - INCHES (MM)
Blower
Frame
Size
Fronts Backs
Each End
Without
Wavy Spring
Gear End
Without Spring
Installed
Required
End Float
Inlet
Center Discharge
Impeller Tips to CylindersEnd Clearance
Impeller Lobes
at 45°
404 .009-.013 .009-.013 .003-.005 .003-.008 .003 .004-.006 .002-.004 .004-.006
(.23-.33) (.23-.33) (.08-.13) (.08-.20) (.08) (.10-.15) (.05-.10) (.10-.15)
406 .009-.013 .000-.013 .003-.005 .007-.012 .006 .005-.007 .003-.005 .005-.007
(.23-.33) (.23-.33) (.08-.13) (.15-.30) (.13) (.13-.18) (.08-.13) (.13-.18)
409 .010-.014 .010-.014 .003-.005 .013-.018 .008 .005-.007 .003-.005 .005-.007
(.25-.36) (.25-.36) (.08-.13) (.31-.43) (.17) (.13-.18) (.08-.13) (.13-.18)
412 .010-.014 .010-.014 .003-.005 .016-.021 .011 .006-.008 .004-.006 .006-.008
(.25-.36) (.25-.36) (.08-.13) (.36-.48) (.28) (.15-.20) (.10-.15) (.15-.20)
418 .010-.014 .010-.014 .003-.005 .022-.027 .017 .008-.010 .004-.006 .008-.010
(.25-.36) (.25-.36) (.08-.13) (.51-.64) (.38) (.20-.25) (.10-.15) (.20-.25)
616 .011-.013 .011-.013 .004-.006 .017-.022 .011 .009-.011 .004-.006 .009-.011
(.28-.33) (.28-.33) (.10-.15) (.38-.51) (.28) (.23-.28) (.10-.15) (.23-.28)
624 .011-.013 .011-.013 .004-.006 .024-.029 .018 .013-.015 .005-.007 .013-.015
(.28-.33) (.28-.33) (.10-.15) (.61-.74) (.46) (.33-.38) (.13-.18) (.33-.38)
Min-Max Min-Max Min-Max Min-Max Minimum Min-Max Min-Max Min-Max
* IMPELLER TIMING FOR STANDARD ROTATION VIEWED FROM GEAR END
TABLE 6
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*