Esco Airstream PCR-3A, Руководство по обслуживанию

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37
Polymerase Chain Reaction Cabinets
Cannot turn ON UV
Lamp
UV magnetic switch is
misaligned or faulty
For PCR:
• Move hinged window to Fully Closed position. The LCD
should show “UV MODE”. Please ensure that the hinged
window is fully closed.
• Check the magnetic switch located behind the front
right corner of the table (right side). Refer to Fig. 9.3
below for the location.
• You will find a magnetic strip attached on the glass
directly in front of the magnetic switch when the glass
is at fully closed position.
• Shift the switch or magnet position so the distance
between them is between 10-13 mm. If the distance is too
far, the switch may not be able to detect the magnet.
•
The switch may be also faulty (please replace it) or the
connection may have a problem. For checking the
connection, follow next step.
For SCR:
• Turn off the unit. Use a continuity tester across pin
connector A7 and A8 on the male connector. Please ensure
that the hinged window is fully closed.
• If the there is no continuity, check the magnetic switch
located behind the front right corner of the table (right
side). Refer to Fig. 9.3 below for the location.
•
Youwill find a magnetic strip attached on the glassdirectly
in frontof the magnetic switch when the glass is at fully
closed position.
• Shift the switch or magnet position so the distance
between them is between 10-13 mm. If the distance is too
far, the switch may not be able to detect themagnet.
• If thereis still no continuity, the switch may be faulty (please
replace it) or the connection may have a problem. For
checking the connection, follow next step.
Fig 9.3
Faulty UV light
•
Replace the faulty UV light. Note: typical UV light life is 8000
hours.
DOMINIQUE
DUTSCHER
SAS