Maintenance - Zehnder Rittling VS Series Installation, Operation And Maintenance Manual

Preventive

maintenance

Condensate drain
In areas where airborne bacteria
may produce a "slimy" substance
in the drain pan, it may be
necessary to treat the drain pan
chemically with an algaecide
approximately every three
months to minimize the problem.
The condensate pan may also
need to be cleaned periodically
to ensure indoor air quality. The
condensate drain can pick up
lint and dirt, especially with dirty
filters. Inspect the drain twice a
year to avoid the possibility of
plugging and eventual overflow.
Compressor
Conduct annual amperage
checks to ensure that amp draw
is no more than 10% greater than
indicated on the serial plate data.
Fan motors
All units have lubricated fan
motors. Fan motors should never
be lubricated unless obvious, dry
operation is suspected. Periodic
maintenance oiling is not
recommended, as it will result in
dirt accumulating in the excess
oil and cause eventual motor
failure. Conduct annual dry
operation check and amperage
check to ensure amp draw is
no more than 10% greater than
indicated on serial plate data.
Air coil
The air coil must be cleaned to
obtain maximum performance.
Check once a year under normal
operating conditions and, if dirty,
brush or vacuum clean. Care
must be taken not to damage the
aluminum fins while cleaning.
Fin edges are sharp.
Cabinet
Do not allow water to stay in
contact with the cabinet for
long periods of time to prevent
corrosion of the cabinet sheet
metal. The cabinet can be
cleaned using a mild detergent.
Refrigerant system
To maintain sealed circuit
integrity, do not install service
gauges unless unit operation
appears abnormal. Reference the
operating charts for pressures
and temperatures. Verify that
air and water flow rates are at
proper levels before servicing the
refrigerant circuit.
Preventive maintenance 51