Carrier X4 7300 Operation & Service Manual page 16

1.1 SAFETY PRECAUTIONS
WARNING
!
SAFETY CONSIDERATIONS: Installation
and servicing of refrigeration equipment
can be hazardous due to system pres-
sures, rotating elements and electrical
components. Only trained and qualified
service personnel should install, repair or
service refrigeration equipment. When
working on refrigeration equipment,
observe precautions in all literature
including this manual, the equipment
tags and labels attached to the unit, and
other safety precautions that may apply.
Follow safe work practices and utilize the
appropriate protective equipment at all
times.
Your Carrier Transicold refrigeration unit has been
designed with the safety of the operator in mind. During
normal operation, all moving parts are fully enclosed to
help prevent injury. During all pre-trip inspections, daily
inspections, and problem troubleshooting, you may be
exposed to moving parts. Please stay clear of all mov-
ing parts when the unit is in operation and when the
START/RUN-OFF switch (SROS) is in the START/
RUN position.
Electronic modules MUST be handled
with care to prevent accidental damage
or degradation from electrical static dis-
charge (ESD), contamination or abuse.
Before touching a module, touch your
body and/or conductive tool being used
to the frame to discharge ESD safely. All
electronics should be handled carefully
and only held by edges of any exposed
board. Care should be taken when insert-
ing/extracting connectors and compo-
nents to avoid exerting excessive stress
on the board which could fracture small
components nearby, resulting in future
failure of circuit.
SECTION 1
SAFETY PRECAUTIONS
Automatic Start-Stop
Your refrigeration unit is equipped with auto-start in
both Start-Stop and Continuous Operation. The unit
may start at any time the START/RUN-OFF switch
(SROS) is in the START/RUN position. A buzzer will
sound for 5 seconds before the unit is started. When
performing any check of the refrigeration unit (e.g.,
checking the belt, checking the oil, checking the electri-
cal connections), make certain that the START/RUN-
OFF switch is in the OFF position.
Engine Coolant
The engine is equipped with a pressurized cooling sys-
tem including a pressurized coolant bottle. Under nor-
mal operating conditions, the coolant in the engine and
radiator is under high pressure and is very hot. Contact
with hot coolant can cause severe burns. Do not
remove the cap from a hot coolant system. If the cap
must be removed, cover it with a rag and remove very
slowly in order to release the pressure without spray.
Refrigerants
The refrigerant contained in the refrigeration system of
this unit can cause frostbite, severe burns, or blindness
when in direct contact with the skin or eyes. For this
reason (and because of legislation regarding the han-
dling of refrigerants) we recommend that you contact
your nearest Carrier Transicold authorized repair facil-
ity whenever service of the refrigerant system is
required.
Battery
This unit may be equipped with a lead-acid type bat-
tery. The battery normally vents small amounts of flam-
mable hydrogen gas. Do not smoke when checking the
battery. A battery explosion can cause serious physical
harm and/or blindness.
1–1
Under no circumstances should a techni-
cian electrically probe the modules at any
point, other than the connector terminals
where the harness attaches. Module com-
ponents operate at different voltage lev-
els and at extremely low current levels.
Improper use of voltmeters, jumper
wires, continuity testers, etc. could per-
manently damage the module.
62-11637