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6 Osmetech OPTI™ Repair Procedures
6-10
Service Manual – Osmetech OPTI™ Analyzer
Exhaust Fan
Removal
The Osmetech OPTI 1 is equipped with an internal exhaust fan which is used for
cooling the electronic circuitry.
The fan is controlled by the software. T3 measures the air temperature inside the
OPTI housing and is displayed in the
DIAG1 - Temp
menu. If T3 rises above
31.5 ° C, the fan is activated. If T3 drops below 30.5 ° C, the fan turns off.
To remove the fan, first open the lower portion of the analyzer. Disconnect
connector J10 which attaches to the main board. Remove one (1) or two (2)
screws of the fan retainer. Next remove the retainer and slide the fan out of the
analyzer.
Installation
Install the new fan in reverse order.
Verification
To test the fan go to
DIAG1 – Temp
and press
ENTER
. Allow the instrument to
warm-up so that T3 exceeds 32 degrees Celsius or until the fan turns on. Verify
the proper fan operation by holding your hand over the rear vent covers. The fan
will pull air through the air vents located on the bottom cover across the main
board circuitry and through the cooling fan vent. An outward air flow should be
felt at the cooling van vent. In case no air flow is felt, look through the vent cover
to check if the fan blades turn. If the fan does not turn in full rotations or is noisy,
then the fan must be replaced. A properly working fan should operate quietly
and quickly cool the internal OPTI circuitry.
Storage Compartment
Located on the rear panel of the Osmetech OPTI 1 is a storage compartment used
for storing accessories during transport. To disassemble the storage
compartment:
•
First separate the lower portion of the analyzer
•
Then, slide the storage compartment out of the upper housing.
To replace the storage compartment, fit the grooved edges of the compartment
over the upper housing and slide it into place. Each OPTI 1 should have one
Level 1 SRC and one Level 3 SRC.