Thermo King 920000, Manual

Page: 13 / 190

13
Safety Precautions
General Practices
1. Always wear goggles or safety glasses.
Refrigerant liquid, refrigeration oil, and
battery acid can permanently damage the eyes.
2. Never close the compressor discharge service
valve with the unit operating.
3. Never operate the unit with the compressor
discharge valve closed.
4. Keep your hands, clothing and tools clear of
the fans and belts when the unit is running.
This should also be considered when opening
and closing the compressor service valves.
5. Make sure gauge manifold hoses are in good
condition. Never let them come in contact
with a belt, fan motor pulley, or any hot
surface.
6. Never apply heat to a sealed refrigeration
system or container.
7. Fluorocarbon refrigerants in the presence of
an open flame produce toxic gases that are
severe respiratory irritants capable of causing
death.
8. Make sure all mounting bolts are tight and are
of correct length for their particular
application.
9. Use extreme caution when drilling holes in the
unit. The holes may weaken structural
components, and holes drilled into electrical
wiring can cause fire or explosion. Holes
drilled into the refrigeration system will
release refrigerant.
10. Use caution when working around exposed
coil fins. The fins can cause painful
lacerations.
11. Use caution when working with a refrigerant
or refrigeration system in any closed or
confined area with a limited air supply (for
example, a truck body or garage). Refrigerant
tends to displace air and can cause oxygen
depletion resulting in suffocation and possible
death.
12. When using ladder or scaffolding, use caution
and follow manufacturer recommendations.
Auto Start/Stop
Refrigerant
When removing refrigerant from a unit, a
recovery process that prevents or minimizes
refrigerant loss to the atmosphere is required by
law.
When a refrigerant is exposed to the atmosphere
in the liquid state, it evaporates rapidly, freezing
anything it contacts. If refrigerant contacts the
skin, severe frostbite can result.
First Aid
In the event of frostbite, the objectives of First
Aid are to protect the frozen area from further
injury, to warm the affected area rapidly and to
maintain respiration.
• Eyes: For contact with liquid, immediately
flush eyes with large amounts of water and get
prompt medical attention.
• Skin: Flush area with large amounts of
lukewarm water. Do not apply heat. Remove
contaminated clothing and shoes. Wrap burns
with dry, sterile, bulky dressing to protect
from infection/injury. Get medical attention.
Wash contaminated clothing before reuse.
• Inhalation: Move victim to fresh air and use
cardiopulmonary resuscitation (CPR) or
mouth-to-mouth ventilation if necessary. Stay
with victim until arrival of emergency medical
personnel.
CAUTION: The unit may start
automatically and at any time when the
unit On/Off switch is in the On position.
Units with the CYCLE-SENTRY
TM option
start automatically in both
CYCLE-SENTRY mode and Continuous
mode. Be sure to turn the On/Off switch
Off before opening doors or inspecting or
working on any part of the unit.