1–1
T-368
SECTION 1
SAFETY SUMMARY
1.1
GENERAL SAFETY NOTICES
Installation and servicing of refrigeration equipment
can be hazardous due to system pressures and electri-
cal components. Only trained and qualified service per-
sonnel should install, repair, or service refrigeration
equipment.
The following general safety notices supplement spe-
cific warnings and cautions appearing elsewhere in this
manual. They are recommended precautions that must
be understood and applied during operation and main-
tenance of the equipment covered herein. The general
safety notices are presented in the following three sec-
tions labeled: First Aid, Operating Precautions and
Maintenance Precautions. A listing of the specific
warnings and cautions appearing elsewhere in the
manual follows the general safety notices.
1.2
FIRST AID
An injury, no matter how slight, should never go unat-
tended. Always obtain first aid or medical attention
immediately.
1.3
OPERATING PRECAUTIONS
Always wear safety glasses.
Keep hands, clothing and tools clear of the evaporator
and condenser fans.
Wear appropriate personal protective equipment for
the work being undertaken.
No work should be performed on the unit until all circuit
breakers, start-stop switches are turned off, and power
supply is disconnected.
In case of severe vibration or unusual noise, stop the
unit and investigate.
1.4
MAINTENANCE PRECAUTIONS
Beware of unannounced starting of the evaporator and
condenser fans. Do not open the condenser fan grille
or evaporator access panels before turning power off,
and disconnecting and securing the power plug.
Be sure power is turned off before working on motors,
controllers, solenoid valves, and electrical control
switches. Tag circuit breaker and power supply to pre-
vent accidental energizing of circuit.
Do not bypass any electrical safety devices, e.g. bridg-
ing an overload, or using any sort of jumper wires.
Problems with the system should be diagnosed and
any necessary repairs performed by qualified service
personnel.
When performing any arc welding on the unit or con-
tainer, disconnect all wire harness connectors from the
modules in both control boxes. Do not remove wire
harness from the modules unless you are grounded to
the unit frame with a static safe wrist strap.
In case of electrical fire, open circuit switch and extin-
guish with CO2 (never use water).
1.5
SPECIFIC HAZARD STATEMENTS
To help identify the label hazards on the unit and
explain the level of awareness each one carries, an
explanation is given with the appropriate conse-
quences:
DANGER
−
Indicates an immediate hazard that WILL
result in severe personal injury or death.
WARNING
−
Warns against hazards or unsafe condi-
tions which COULD result in severe personal injury or
death.
CAUTION
−
Warns against potentially hazardous or
unsafe practices that could result in minor personal
injury, product or property damage.
The statements listed below are applicable to the
refrigeration unit and appear elsewhere in this manual.
These recommended precautions must be understood
and applied during operation and maintenance of the
equipment covered herein.
WARNING
!
EXPLOSION HAZARD: Failure to follow
this WARNING can result in death, seri-
ous personal injury and / or property
damage. Never use air or gas mixtures
containing oxygen (O2) for leak testing or
operating the product.
Charge Only With R
−
134a: Refrigerant
must conform to AHRI Standard 700
specification.
WARNING
!
Beware of unannounced starting of the
evaporator and condenser fans. The unit
may cycle the fans and compressor
unexpectedly as control requirements
dictate.
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