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1.0 INTRODUCTION
1.1 General
The CyberOne EC CW floor mounted precision air
conditioning system covered by this manual is designed
and manufactured by STULZ Air Technology Systems,
Inc. (STULZ) and uses the latest, state-of-the-art control
technology. Recognized as a world leader, STULZ provides
air conditioning systems with the highest quality
craftsmanship using the finest materials available in the
industry. The system will provide years of trouble free
service if installed and maintained in accordance with this
manual. Damage to the unit from improper installation,
operation or maintenance is not covered by the warranty.
Study the instructions contained in this manual. They must be
followed to avoid difficulties. Spare parts are available from
STULZ to insure continuous operation. Using substitute parts
or bypassing electrical or refrigeration components in order
to continue operation is not recommended and will void the
warranty. Due to technological advancements, components
are subject to change without notice.
CyberOne EC CW systems are designed to be installed
indoors unless otherwise noted on the equipment.
1.2 Safety
NOTE, CAUTION and WARNING statements are used in this
manual to draw attention to important operational and safety
information.
A bold text NOTE marks an important detail.
A bold text CAUTION marks information im-
portant to protecting your equipment and its
performance. Be especially careful to read and
follow all cautions that apply to your application.
A bold text WARNING marks safety information
important to protecting you and others from
harm. Pay very close attention to all warnings
that apply to your application.
An exclamation — — symbol in a WARNING or CAUTION
indicates a general safety alert. A lightning bolt — —
symbol in a WARNING indicates an electrical shock hazard.
1.2.1 Safety Summary Prior to performing any
installation, operation, maintenance or troubleshooting
procedure, read and understand all relevant instructions,
recommendations and guidelines contained within this
manual.
Certain maintenance or cleaning procedures may call for the
use and handling of chemicals, solvents, or cleansers. Always
refer to the manufacturer’s Safety Data Sheet (SDS) prior to
using these materials. Clean parts in a well-ventilated area.
Avoid inhaling solvent fumes and prolonged exposure of skin
to cleaning solvents. Wash exposed skin thoroughly after
contact with solvents.
The following warnings and cautions are applicable to the
equipment and operations documented in this manual.
WARNINGS
All personnel working on or near equipment should
be familiar with hazards associated with electrical
maintenance. Safety placards/stickers have been
placed on the unit to call attention to all personal
and equipment damage hazard areas. Never work
on electrical equipment unless another person
who is familiar with the operation and hazards of
the equipment and competent in administering
first aid is nearby.
This equipment should be serviced and repaired by
a journeyman refrigeration technician only.
To prevent personal injury stay clear of rotating
components, as automatic controls may start them
unexpectedly. 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.
When working on electrical equipment, remove all
jewelry, watches, rings, etc.
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.
CAUTIONS
After the return and supply piping is connected to
the unit, the entire system must be flushed prior to
beginning operation.
Once in service, the CyberOne CW EC unit should
not be drained and taken out of service for an
extended period of time. Formicary corrosion can
occur.
Do not use chloride based water conditioning
additives in the condensate drain pans. They will
cause corrosion to occur on the coil fins.
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