Section 5
Maintenance
5-5
distilled water thoroughly 4-5 times to remove any residual acetic
acid.
•
Allow the acetic acid to soak in the block for about 10-15 minutes.
To drain the block, plug the output ports on the instrument front
panel, or use the syringe to draw the acid out. Turn the air pump ON,
and open the flow adjust valve slightly; the acid will drain through
the hose attached to the fill/drain fitting. CAUTION: Be sure that
the hose attached to the fill/drain fitting is directed away from your
face. Acid will squirt for a considerable distance if the air pump is
turned on with the flow adjust valve substantially open. Fill with
distilled water, drain, and repeat 4-5 times to thoroughly clean the
condenser block.
Fuses
The 6 amp fuse in the holder on the back panel protects the 10.5-16
VDC battery circuit. The 1 amp slow-blow fuse protects the 610-01
AC Module that is used with 100-130/200-260 VAC line voltage.
If the LI-610 fails to turn on, check the fuse for the power source you
are using (battery or AC). If the Dew Point Generator continually
blows fuses it is in need of repair.
Replacing the Air Pump Diaphragm
The air pump diaphragm may fail from pressure surges or from
prolonged operation. If the pump motor appears to be functioning
normally, but the rate of air flow is greatly reduced, it may be an
indication that the diaphragm has failed. A replacement Brailsford air
pump diaphragm is included in your spare parts kit. A pump that is
functioning normally will generally output a pressure of 450 to 600 mb,
when measured directly at the
TO CONDENSER
port with the 610-03
Digital Pressure Meter.
Spare diaphragms can be ordered from LI-COR under part number
247-03536 (1 each).
