Adjustment Of Cup Height For S.probe Descent; Probe Descent Position - Hitachi 902 Service Manual

Adjustment of cup height for S.probe descent:

(a) Details of operation
End
Acceleration/
deceleration: Ascent
Stops when abnormal
descent is detected,
and recorded as S1, S2, S3.
NOTE: Does not advance when S.STOP key pressed.

Probe descent position:

S1 -- sample disk outer row No. 1 position (empty sample cup)
S2 -- sample disk outer row No. 2 position (empty sample cup set on ø16 mm × 100 mm
test tube)
S3 -- sample disk inner row W1 position (empty sample cup)
Above positions are predetermined. Operator must set cups at 3 positions before the
adjustment.
(b) Extent of operation
Rotation angle
1)
Descent amount : Should descend to lowermost point (117 mm) at constant
2)
Descent at
constant speed: Descent
S1
S2
S3
Conditions for stopping:
1) When STOP key is pressed.
2) When mechanism STOP level alarm occurs.
In case of 1), probe returns to rinse bath and
operation stops.
(valid only for pos. 58, 59, 60)
: Reference value (pulse count) is subjected to no. of
correction pulses set on System Parameters screen, and
corrected pulse count shall be used.
speed.
14 - 15
Cell stop
Start
(rinse bath)