Illuminator Bulb Replacement; Fuses; Care And Cleaning; Servicing - Reichert Abbe Mark II Manual De Instrucciones

10.0 ILLUMINATOR BULB REPLACEMENT

The illuminator bulb can be replaced by removing the condenser
sleeve (Figure 6). Always use the suggested replacement bulb
(Catalog No. 13104620, pkg. of 3) for maximum efficiency and
safety. After inserting a new bulb, the socket can be adjusted to
center the light on the measuring prism with the condenser sleeve
in place. If necessary, push down on the spring-loaded condenser
sleeve lock pin and slide back and forth until the pin snaps into
place.
The REICHERT ABBE MARK II Refractometer electrical circuitry
is protected by two (2) fuses. To replace the fuses turn the Adjust-
ment Control Knob (Figure 1) two turns clockwise. This raises
the elevator assembly to provide clear access to the fuses.
Remove the adjustment control knob with a 1/8" Allen wrench.
Remove the two Phillips head screws which hold the right panel
cover to the bottom of the instrument housing. Slide the panel
cover down as far as possible to facilitate its removal. With the
right panel cover removed the fuses will be visible on the bottom
plate of the instrument (Figure 5b). Replace the fuses and
reassemble.

11.0 CARE AND CLEANING

The REICHERT ABBE MARK II Refractometer is a precision
optical instrument designed for years of trouble-free operation.
The interior design has been carefully constructed for protection
from dust or spills. The exterior is painted with a durable enamel.
The stain-less steel refractive prism assembly is sealed with
corrosion-resistant epoxy.
The use of strong solvents such as N, N-Dimethylformamide or
N, N-Dimethylacetamide, cresols, phenols and other tar acids or
strong acetic solutions should be avoided. Materials such as
8
English
Tetrahydrofuran or some lacquer thinners and their components
can deteriorate the prism seal over a long period of time or when
applied in elevated temperatures.
An accumulation of dust, solvents or sample, particularly on the
prism assembly, may eventually penetrate the refractometer and
affect accuracy or accelerate wear.
When the instrument is not in use, the measuring prism assembly
should be kept closed with a folded sheet of lens tissue between
the prisms. The prism surfaces should be cleaned with distilled
water, methanol or an appropriate solvent immediately after each
sample is used.
Warm distilled water is recommended for removing sugar residues
and methanol for oil-based samples. The prism may be wiped
with lens cleaning tissue, but it should not be wiped with a hard,
dry cloth. After wiping the sample from the prism, rinse the prism
again with distilled water.
NOTE: Do not wipe the measuring prism surface dry and do not
wipe it with anything if it is dry. Do not contact the prism or the
surrounding seal with metal or with sharp or pointed objects.
The glass parts of the prism assembly are relatively hard and
have excellent resistance to staining. Strong acids or bases should
not be measured with this instrument, nor used as cleaning agents.
To clean the eyepiece, snap out the rubber insert at the end of
the adjustable eyepiece tube. Clean the lens with a cotton swab
or lens tissue lightly dampened with acetone or methanol. Replace
the rubber insert.

12.0 SERVICING

The REICHERT ABBE MARK II and REICHERT ABBE MARK
II Plus Refractometers should be serviced or repaired by factory-
trained service and repair technicians. If operating difficulty is
experienced contact Reichert' s Refractometer Customer Service
Department at 716-686-3000 or fax 716-686-3085. Outside the
United States contact your local Reichert representative.

13.0 SPECIFICATIONS

REICHERT ABBE MARK II Refractometer Model 13104800/13104810
REICHERT ABBE MARK II Plus Refractometer
Display
Modes of Operation
Model 13104940/13104950
Direct reading LED
Refractive index (n ),
D
%Solids (Brix) and
temperature compensated
Brix - BX-TC