Impeller Shaft Sensor Gap; Motor Fan Spacing - Bell DATASPEED 40 Adjustments And Lubrication

ISS 3, SECTION 582-210-700
MOTOR FAN SPACING (Early and Late Design)
(Early Design)
For motors without thermal overload switch:
Requirement
There shall be
1/4 inch ---
±
1/32 inch
between motor bearing housing and fan hub when
the shaft endplay is taken up to make this gap a
minimum.
(Late Design)
For motors with thermal overload switch:
Requirement
There shall be
15/32 inch ---
±
1/32 inch
between motor bearing housing and fan hub when
the shaft endplay is taken up to make this gap a
minimum.
To Adjust
With setscrew loose, push fan in or out to meet
requirement. Tighten setscrew.
Note: Early design motors (those without a thermal
overload switch button) have the fan spaced at 7/16
inch with the use of a 7/16 inch spacer.
IMPELLER SHAFT SENSOR GAP
Requirement
Min 0.008 inch --- Max 0.020 inch
between teeth of timing wheel and sensor pole
piece.
To Adjust
Loosen locking screw. Adjust gap to meet require-
ment. Tighten locking screw.
TIMING WHEEL
SETSCREW
Note:
It is preferable to use non-
magnetic gauges to check requirement.
Steel gauges are attracted by the sensor
magnet making it difficult to gauge
the adjustment.
TIMING
r
~
SENSOR
c:~~'ii'.~~i
80-Column Printer
(Left View)
MAGNETIC FLAG
SENSOR
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