Section 5
5-4
Maintenance
•
Remove the hose, wipe the contaminants off the screen, and
reassemble.
External Fan Filter
The external fan filter should be cleaned (rinsed out) or replaced as
needed. The filter is located behind the black filter cover on the
instrument side panel; pull the cover straight off to expose the filter.
Cleaning the Condenser Block
The condenser block and/or bubbler stone may become contaminated
with mineral or other deposits, resulting in a loss of air flow through the
LI-610. A severe loss of air flow may also indicate that the air pump
diaphragm has failed. A pump that is functioning normally will
generally output a pressure of 450 to 600 mb, when measured at the
TO
CONDENSER
port with the 610-03 Digital Pressure Meter.
If the pump appears to be functioning normally, you may need to clean
the condenser block with a solution of 1N acetic acid.
To clean the condenser block:
•
Drain the condenser block assembly; it is not necessary to drain the
radiator assembly.
•
Connect a new section of Bev-a-line tubing with attached female
Luer lock to the fill/drain fitting on the condenser block housing.
•
Turn the air pump on and open the flow adjust valve very slightly;
just enough to prevent any acetic acid from backing up into the hose
attached to the bottom of the condenser block.
•
Fill the condenser with 1N acetic acid using the syringe or small
squeeze bottle (included). Fill until the acetic acid rises in the
fill/drain tube and is approximately 1 cm below the top of the
condenser housing. Rinse the syringe and/or squeeze bottle with
