Bosch ACS 753 Repair Instructions page 5

ACS 753, ACS 763, ACS 863 Service Manual
WARNING: To prevent personal injury,
ALLOW ONLY QUALIFIED PERSONNEL TO OPERATE THE MACHINE. Before operating
the machine, read and follow all instructions and warnings in this manual. The operator must
be familiar with air conditioning and refrigeration systems, refrigerants, and the dangers of
pressurized components. If the operator cannot read this manual, all operating instructions
and safety precautions must be read and discussed in the operator's native language.
USE THE MACHINE AS OUTLINED IN THIS MANUAL. Using the machine in a manner for
which it was not designed will compromise the machine and nullify the protections provided.
PRESSURIZED TANK CONTAINS LIQUID REFRIGERANT. Do not overfill the internal
storage vessel (ISV), because overfilling may cause explosion resulting in personal injury
or death. Do not recover refrigerants into a nonrefillable container; use only type-approved
refillable containers that have a pressure relief valve.
HOSES MAY CONTAIN LIQUID REFRIGERANT UNDER PRESSURE. Contact with
refrigerant may cause personal injury, including blindness and frozen skin. Wear protective
equipment, including goggles and gloves. Disconnect hoses using extreme caution. Ensure
the phase has been completed before disconnecting the machine to prevent the release
of refrigeration to the atmosphere.
DO NOT BREATHE REFRIGERANT AND LUBRICANT VAPOR OR MIST. Refrigerant
reduces the oxygen available for breathing, resulting in drowsiness and dizziness. Exposure
to high concentrations of refrigerant causes asphyxiation, injury to the eyes, nose, throat,
and lungs, and can affect the central nervous system. Use the machine in locations with
mechanical ventilation that provides at least one air change per hour. If accidental system
discharge occurs, ventilate the work area before resuming service.
DO NOT DISPERSE THE REFRIGERANT INTO THE ENVIRONMENT. Such a precaution
is necessary to prevent the possible presence of refrigerant in the working environment.
The refrigerant R1234yf (ACS 763, ACS 863 only) is heavier than air and tends to
concentrate in the pits of the workshop.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of spilled or open
containers of gasoline or other flammable substances.
TO REDUCE THE RISK OF FIRE, do not use an extension cord. An extension cord may
overheat and cause fire. If you must use an extension cord, use the shortest possible cord
with a minimum size of 14 AWG.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of flames and
hot surfaces. Refrigerant decomposes at high temperatures, freeing toxic substances to
the environment which are noxious to the user.
TO REDUCE THE RISK OF FIRE, do not use the machine in environments containing
explosive gases or vapors.
TO REDUCE THE RISK OF FIRE, Do not use this machine in ATEX classified zones
or areas. Protect the machine from conditions that may cause electrical failure or other
hazards relating to ambient interaction.
Robert Bosch GmbH
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SP00D00609 2018-03-26