AirTech 3AL - Maintenance Chart

17
Maintenance Chart
Problem Probable Cause and Solution
Water consumption
increases as
indicated by
reduction of liquid
level in the operating
liquid sump.
Clogged or obstructed cooler.
Clean the cooler by blowing compressed air through it,
taking reasonable and necessary safety precautions.
Ambient air highly
contaminated.
Clogged or obstructed cooler.
Clean the cooling fins with compressed air.
Dirt builds up in the
system due to
introduction with the
suction gas or make-
up water.
Clean the unit as described in Section 10.3.3 of this
manual.
Add an inlet filter or water filter as required.
Sand or other fine
grain particulate
enters system with
make-up liquid.
Clean the system periodically (intervals dependant on
contamination level, but at least once a year) as described
in Section 10.3.3 of this manual.
In addition, you can briefly run the system with the
operating liquid drain closed to flush out any water
existing in the pump. Take care to avoid contact with the
cooling fan during this operation; it is recommended to
reinstall the housing panels prior to operation of the
system.
No vacuum due to
jammed impeller
Turn the shaft by hand to fee up.
Turn off the electrical power supply and lock out power to
the unit.
Remove the sheet metal covers to the unit.
Remove the shroud covering the fan (note: cooler may
need to be removed to remove the shroud).
Turn the fan by hand (do not use leverage).
If the shaft will not come free, the unit must be serviced by
an authorized service center. Please contact Airtech for
assistance.