6 Osmetech OPTI™ Repair Procedures
6-24
Service Manual – Osmetech OPTI™ Analyzer
Exhaust Fan
Removal
The Osmetech OPTI CCA 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 J8 which attaches to the main board. One (1) screw fastens to the fan
retainer and must be removed. 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
DIAG2 – Fan
and press
ENTER
. Verify 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 CCA is a storage compartment.
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 Osmetech OPTI CCA should have
one Level 1 SRC, one Level 3 SRC and one Hb calibrator cassette.
