The Advanced
®
Osmometer Model 3320 Service Manual
8
General Description and Purpose
The Advanced
®
Model 3320 Osmometer uses
the freezing-point depression method to meas-
ure the osmotic concentration of body fluids
such as blood, serum and urine. The Model
3320 automatically tests a single 20 µL sam-
ple.
This Service Manual contains:
• instructions for performing repairs.
• guides for troubleshooting operational and
mechanical problems.
• circuit system illustrations.
• information about replacement parts and
service repairs.
This manual is designed to assist
service technicians, and does not
imply a license to perform repairs
without proper qualifications.
Service Assistance
To contact Advanced Instruments Product
Service:
• Call (800) 225-4034 (toll-free within the
USA and Canada; after normal business
hours, dial extension 2191)
• Call +US (781) 320-9000 (elsewhere)
• Or fax (781) 320-0811
When calling Advanced Instruments, have the
model and serial number from the label on the
bottom of the instrument, and a description of
the problem. Use a telephone as close to the
instrument as possible in order to facilitate
making recommended diagnostic checks.
A service technician may assist in making
minor repairs over the phone, providing you
with recommended parts (or part numbers), or
may issue an authorization (RMA) to ship the
instrument for factory repair.
The RMA procedure is as follows:
1. Contact Advanced Instruments to obtain
an RMA.
2. Pack and ship the instrument in its origi-
nal carton. Do not send instrument supply
items.
3. Prepay shipment to the factory. Advanced
Instruments cannot accept collect ship-
ments. Insure the shipment or accept the
damage risk.
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