27 © STULZ USA – all rights reserved 11.8.22
CYBERWALL™ INSTALLATION, OPERATION AND MAINTENANCE MANUAL
MAINTENANCE
Periodic General Maintenance
Systematic, periodic general maintenance of the CyberWall™ system is recommended for optimum
performance. General maintenance should include, but is not limited to, the following: replacing or cleaning
filters, tightening electrical connections, checking the water lines to ensure they are free of debris, ensuring
no air is in the water line(s), cleaning the interior of the unit and visually inspecting the unit’s components.
Use copies of the Periodic General Maintenance Checklist in this manual (see Appendix A) to record periodic
general maintenance inspections. For assistance, contact STULZ Product Support. Heed all safety directives
when performing any type of maintenance.
WARNING
This equipment should be serviced and repaired by a qualified 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 at the heater
and humidifier circuit breakers (if present), 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 at any time. To prevent personal injury, stay clear of rotating
components as automatic controls may start them unexpectedly.
General Cleaning
Cleaning Non-Porous Surfaces
If microbial growth (mold) on a non-porous insulating surface (closed cell insulation or sheet metal surface) is
observed:
• Disconnect all electrical power to the unit.
• Wearing the appropriate personal protective equipment, use a brush for sheet metal surfaces or a soft
sponge on a foil face or closed cell foam surface to mechanically remove the microbial growth.
NOTE
Be careful not to damage the non-porous surface of the insulation.
• Thoroughly clean the contaminated areas with an EPA-approved sanitizer specifically designed for HVAC
use.
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