Thermo King UT-1200, Manual

Page: 17 / 169

Safety Precautions
17
Refrigerant Oil Hazards
Electrical Hazards
High Voltage
DANGER: Do not use oxygen (O
2
) or
compressed air for leak testing. Oxygen
mixed with refrigerant is combustible.
WARNING: Wear butyl lined gloves when
handling refrigerant to help prevent
frostbite.
CAUTION: Refrigerant in a liquid state
evaporates rapidly when exposed to the
atmosphere, freezing anything it contacts.
Be careful when handling refrigerant to
protect your skin from frostbite.
CAUTION: When being transferred,
refrigerant must be in liquid state to avoid
possible equipment damage.
CAUTION: When transferring
refrigerant, use a process that prevents or
greatly restricts refrigerant from escaping
into the atmosphere. Refrigerant damages
the earth’s upper ozone layer.
WARNING: Protect your eyes from
contact with refrigerant oil. The oil can
cause serious eye injuries. Avoid
prolonged or repeated contact with
refrigerant oil. To prevent irritation, wash
your hands and clothing thoroughly after
handling the oil.
CAUTION: Use the correct oil in Thermo
King systems to avoid damaging
equipment and invalidating its warranty.
CAUTION: Do not mix refrigerant oils
because that can cause system damage.
CAUTION: Use dedicated equipment to
prevent contaminating systems with the
wrong type of oil.
CAUTION: Store refrigerant oil in an
approved sealed container to avoid
moisture contamination.
CAUTION: Do not expose the refrigerant
oil to the air any longer than necessary.
The oil will absorb moisture, which results
in much longer evacuation times and
possible system contamination.
CAUTION: Wipe up spills immediately.
Refrigerant oil can damage paints and
rubber materials.
DANGER: When servicing or repairing a
temperature control unit, the possibility of
serious or even fatal injury from electrical
shock exists. Extreme care must be used
when working with a refrigeration unit
that is connected to a source of operating
power, even if the unit is not operating.
Lethal voltage potentials can exist at the
unit power cord, inside the control box, at
the motors and within the wiring
harnesses.
WARNING: Make sure the unit On/Off
switch is turned Off before connecting or
disconnecting the standby power plug.
Never attempt to stop the unit by
disconnecting the power plug.
WARNING: Make sure the unit power
plug is clean and dry before connecting it
to a power source.
WARNING: Do not make rapid moves
when working on high voltage circuits in
refrigeration units. Do not grab for falling
tools because you might accidentally touch
a high voltage source.
WARNING: Use tools with well insulated
handles. Never hold uninsulated metal
tools near exposed, energized conductors.
WARNING: Treat all wires and
connections as if they were high voltage
until a meter and wiring diagram indicate
otherwise.