Du Pont SORVALL RC-5 Service Manual page 184

Sorvall®
Centrifuges
Calibration
ProceduresSection
7CALIBRATION
PROCEDURES7-1.
GeneralThis
section provides Information necessary to maintain optimum system
performanceby
performing
individual
checks and adjustments to calibrate specific
circuit
functions.The
calibrations
are necessary only as a result
of specific
parts replacements
and
sys¬tem
aging
and are performed
only when referenced
within the various sections of
thismanual.7-2.
Calibration
SequenceSince
some circuit functions
are
dependent
on
and interrelated with others,
the
calibra¬tion
procedures must be performed In specific
sequence.
Table
7-1
contains
columnsentitled
ITEM
REPLACED,
REPLACEMENT
REFERENCES, and
CALIBRATION
SE¬QUENCE.
The
ITEM
REPLACED column lists all
parts requiring
calibration due to
re¬placement
or
aging.
The
REPLACEMENT REFERENCE
column provides a
cross-refer¬ence
to
specific paragraphs associated
with
troubleshooting or replacement
procedures.The
CALIBRATION SEQUENCE column
provides sequential step
references
subordi¬nate
to
paragraph
7-6
or
7-7
and denotes which calibration procedures must be
per¬formed
for the listed
part.
The
step references are sequential
and
are
used
only
in
a
left-to-right
numerical
progression as
shown.7-3.
Calibration Criteria and
Adjustment
LocationsAmbient
room
temperature
must not exceed
25°C
and should remain stable when
per¬forming
the calibrations. Also,
power supplied
to the centrifuge must be stable
andconstant.
Unless
otherwise specified,
all
test points
(TP) and potentiometer (R)
adjust¬ments
are
located
on printed
circuit board
No.
50059. Figure
7-1
locates
these
items.Tables
7-2
and
7-3
describe
the
test points and calibration
for
P.C.
Board.
PN
50059.7-4.
Personnel
Safety7-1