Stulz FLAIR series, Installation, Operation And Maintanance Manual

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FLAiR Series Installation, Operation & Maintenance Manual
(©Aug, 2007)
Air Technology Systems, Inc.
4.0 MAINTENANCE
4.1 Periodic General Maintenance
Systematic, periodic general maintenance of the
FLAiR unit is recommended for optimum system
performance. General maintenance should include,
but is not limited to the following: replacing filters and
humidifier cylinders, tightening electrical connections,
checking the condensate line to ensure it is free of
debris, cleaning the interior of the unit, inspecting the
units' components visually, checking belt tension,
checking level of refrigerant and ensuring no moisture
is in the refrigerant.
Use copies of the Periodic General Maintenance
Checklist in this manual, (see Appendix A), to record
periodic general maintenance inspections. For
assistance, contact the SATS Product Support Group.
Ensure adherence to all safety statements while
performing any type of maintenance.
WARNING
Turn off power to the unit at the main power dis-
connect switch unless you are performing tests
that require power. With power and controls en-
ergized, the unit could begin operating automati-
cally at any time.
Hazardous voltage will still be present at the
evaporator, condenser, heat/reheat and humidi-
fier, even with the unit turned off at the control
panel. To isolate the unit for maintenance, turn
off power at the main power disconnect switch.
Always disconnect main power prior to perform-
ing any service or repairs. To prevent personal
injury, stay clear of rotating components be-
cause automatic controls may start them unex-
pectedly.
This unit employs high voltage equipment with
rotating components. Exercise extreme care to
avoid accidents and ensure proper operation.
WARNING
Phosgene, a deadly, poisonous gas, is
generated when refrigerant is exposed to flame.
Always ensure adequate ventilation
during refrigeration repairs.
CAUTION
This equipment should be serviced and repaired
by a journeyman or a qualified refrigeration tech-
nician only.
WARNING
Always recover all refrigerant prior to any system
repairs, failure to do so may result in system
over pressurization and rupture.
4.1.1
FLAiR Precision A/C Unit
4.1.1.1 Filter
The filter is usually the most neglected item in an air
conditioning system. To maintain efficient operation,
the filter should be checked at least monthly and
replaced as required.
NOTE
Conditions of spaces vary and filters should be
checked based on those conditions.
4.1.1.2 Blowers/Fans
The blower/fan motors are provided with permanently
lubricated bearings and should not require service for
the lifetime of the equipment. Periodic checks of the
blower/fan system should include checking the motor
mounts, housing and blower wheel. Check that all
mounts are secure and the blower wheel is tightly
mounted on the fan shaft and does not rub against the
fan housing. The blower vanes should be free of debris.
4.1.1.3 Drain Pan
To ensure proper drainage, inspect the drain pan
regularly. Make sure the drain pan outlet is always free
of debris and ensure the drain pan does not leak.
4.1.1.4 Evaporator Coil
The evaporator coil should be inspected semi-annually
and cleaned as required, following standard evaporator
coil cleaning practices.
4.1.1.5 Heat/Reheat
The heat/reheat equipment should be inspected semi-
annually to ensure it is operational. If you have electric
heat/reheat, inspect the heating elements to ensure
they are free of debris.
4-1