(Dec., 2013)
STULZ CyberRow Chilled Water Series Installation, Operation & Maintenance Manual
5-1
5.0 MAINTENANCE
5.1 Periodic General Maintenance
Systematic, periodic general maintenance of the
CyberRow unit is required for optimum system
performance. General maintenance should include,
but is not limited to the following: replacing fi lters,
tightening electrical connections, checking the
condensate pans and drain line to ensure they are
free of debris, cleaning the interior of the unit,
inspecting the units’ components visually, checking
level of refrigerant and ensuring no moisture is in the
refrigerant IF APPLICABLE.
Use copies of the Periodic General Maintenance Check-
list in this manual (see Appendix A) to record periodic
general maintenance inspections. For assistance,
contact STULZ Product Support. Ensure your adherence
to all safety statements while performing any type of
maintenance.
WARNING
This equipment should be serviced and repaired
by a journeyman or a qualifi ed refrigeration
technician only.
WARNING
This unit employs high voltage equipment with
rotating components. Exercise extreme care to
avoid accidents and ensure proper operation.
Hazardous voltage will still be present inside the electric
box at the motor start protectors and circuit breakers,
even with the unit turned off at the microprocessor
controller. To isolate the unit for maintenance, turn off
power at the main power disconnect switch. Always
disconnect main power prior to performing any service
or repairs.
WARNING
Turn off power to the unit unless you are
performing tests that require power. With
power and controls energized, the unit could
begin operating automatically at any time. To
prevent personal injury, stay clear of rotating
components as automatic controls may start
them unexpectedly.
5.1.1 Filters
The fi lter is usually the most neglected item in an air
conditioning system. To maintain effi cient operation,
the fi lter should be checked every month and cleaned
or replaced as required.
NOTE
Conditions of spaces vary. Extremely dusty
environments may require more frequent fi lter
maintenance.
The air fi lters are located behind the air intake grille at
the rear of the cabinet. To access the fi lters, unlatch
the rear access panel at the top and remove it from the
cabinet.
5.1.1.1 Cleanable
Filters
Cleanable fi lters are spring loaded in the holding trays
in the access panel. Using a fl at head screwdriver,
gently push the fi lters to one side and remove the
fi lters from the trays (Figure 16).
Figure 16- Cleanable Filters
Clean the fi lter media using a vacuum cleaner, low
pressure compressed air or rinse with water. A mild
detergent such as dish washing liquid may be used. DO
not use solvents or cleaning agents. Replace the fi lters
every 2 to 3 years when they become too fl imsy.
